Across the United States, rural residents rely on unregulated and generally unmonitored private wells for drinking water, which may pose serious health risks due to unrecognized contaminants. We assessed the nature, degree, and spatial distribution of cumulative health risks from inorganic contaminants in groundwater. Our analysis included nearly 84,000 data points from 6500+ wells, across 51 of Montana's 98 watersheds, using a public groundwater database. We compared a drinking water screening level cumulative risk assessment (CRA) for inorganics based on the U.S. Environmental Protection Agency (EPA) protective health thresholds (Maximum Contaminant Level Goals, Health Advisories [MCLG-HAs]) to a CRA based on EPA public supply enforceable Maximum Contaminant Levels (MCLs). Based on median concentrations of 19 inorganics (antimony, arsenic, barium, beryllium, boron, cadmium, chromium, copper, fluoride, manganese, molybdenum, nickel, nitrate, lead, selenium, strontium, thallium, uranium, zinc), 75% of watersheds had MCLG-HA-based cumulative risk values > 1.0; arsenic and uranium contributed the most risk, followed by strontium, fluoride, manganese and boron. Hence, this screening level (Tier I) CRA indicated widespread potential for unrecognized human health risk to private well users from inorganic contaminants considering both carcinogenic and non-carcinogenic risks. Sensitivity analysis showed that benchmarks applied (MCLG-HAs versus MCLs) exerted the largest control on results. Our findings identify priority regions for Tier 2 risk assessments to elucidate local sources and distributions of geogenic versus anthropomorphic contaminants. Our study is the first statewide assessment of cumulative health risk from groundwater that we are aware of, and results support increased statewide drinking water education and testing to reduce human health risks from contaminated private well water.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.envpol.2025.125810","usgsCitation":"Eggers, M., Sigler, W., Kiekover, N., Bradley, P., Smalling, K., Parker, A., Peterson, R., and LaFave, J., 2025, Statewide cumulative human health risk assessment of inorganics-contaminated groundwater wells, Montana, USA: Environmental Pollution, v. 369, 125810, 17 p., https://doi.org/10.1016/j.envpol.2025.125810.","productDescription":"125810, 17 p.","ipdsId":"IP-167347","costCenters":[{"id":470,"text":"New Jersey Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":489772,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.envpol.2025.125810","text":"Publisher Index Page"},{"id":482274,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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Adam","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":927921,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kiekover, Nicklas 0009-0007-3910-9272","orcid":"https://orcid.org/0009-0007-3910-9272","contributorId":351129,"corporation":false,"usgs":false,"family":"Kiekover","given":"Nicklas","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":927922,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bradley, Paul M. 0000-0001-7522-8606","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":205668,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":927923,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smalling, Kelly 0000-0002-1214-4920","orcid":"https://orcid.org/0000-0002-1214-4920","contributorId":221234,"corporation":false,"usgs":true,"family":"Smalling","given":"Kelly","affiliations":[{"id":470,"text":"New Jersey Water Science Center","active":true,"usgs":true}],"preferred":true,"id":927924,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Parker, Albert E.","contributorId":203235,"corporation":false,"usgs":false,"family":"Parker","given":"Albert E.","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":927925,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Peterson, Robert K.D.","contributorId":351130,"corporation":false,"usgs":false,"family":"Peterson","given":"Robert K.D.","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":927926,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"LaFave, John","contributorId":351131,"corporation":false,"usgs":false,"family":"LaFave","given":"John","affiliations":[{"id":36941,"text":"Montana Bureau of Mines and Geology","active":true,"usgs":false}],"preferred":false,"id":927927,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70266342,"text":"70266342 - 2025 - A new groundwater energy transport model for the MODFLOW hydrologic simulator","interactions":[],"lastModifiedDate":"2025-05-05T14:11:27.139592","indexId":"70266342","displayToPublicDate":"2025-02-14T09:08:16","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"A new groundwater energy transport model for the MODFLOW hydrologic simulator","docAbstract":"Heat transport in the subsurface is an important aspect of research related to the effects of a warming climate on ecological services (i.e., cold-water refugia); the development of geothermal resources for energy banking schemes (i.e., aquifer thermal energy storage [ATES]); and the effects of temperature on other aspects of groundwater quality, such as nutrient cycling. Historically, simulation of heat transport using the MODFLOW groundwater simulator and related codes was performed by scaling the input parameters of a solute-transport model to emulate heat transport. However, that approach required additional pre- and post-processing of input and output and could not account for the variation in effective thermal storage and transport properties during transient, unsaturated flow, for example. True heat-transport capabilities in the context of MODFLOW were first introduced in a variant called USG-Transport. More recently, a new groundwater energy-transport (GWE) model type has been added to MODFLOW 6, the core version of the MODFLOW hydrologic simulator. GWE supports the simulation of heat transport on structured or unstructured grids as well as within and between features of advanced packages that represent streams, lakes, multi-aquifer wells, and the unsaturated zone. GWE is integrated within MODFLOW 6 and is accessible through the FloPy Python package and the MODFLOW 6 application programming interface (API). An example simulation demonstrates conduction between grid cells through both the water and the solid aquifer material, including thermal bleeding from saturated overburden cells into a groundwater flow field.
","language":"English","publisher":"National Groundwater Association","doi":"10.1111/gwat.13470","usgsCitation":"Morway, E.D., Provost, A.M., Langevin, C.D., Hughes, J.D., Russcher, M.J., Chen, C., and Lin, Y., 2025, A new groundwater energy transport model for the MODFLOW hydrologic simulator: Groundwater, v. 63, no. 3, p. 409-421, https://doi.org/10.1111/gwat.13470.","productDescription":"13 p.","startPage":"409","endPage":"421","ipdsId":"IP-172581","costCenters":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true}],"links":[{"id":487945,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/gwat.13470","text":"Publisher Index Page"},{"id":485372,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"63","issue":"3","noUsgsAuthors":false,"publicationDate":"2025-02-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Morway, Eric D. 0000-0002-8553-6140 emorway@usgs.gov","orcid":"https://orcid.org/0000-0002-8553-6140","contributorId":4320,"corporation":false,"usgs":true,"family":"Morway","given":"Eric","email":"emorway@usgs.gov","middleInitial":"D.","affiliations":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true}],"preferred":true,"id":935684,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Provost, Alden M. 0000-0002-4443-1107 aprovost@usgs.gov","orcid":"https://orcid.org/0000-0002-4443-1107","contributorId":2830,"corporation":false,"usgs":true,"family":"Provost","given":"Alden","email":"aprovost@usgs.gov","middleInitial":"M.","affiliations":[{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":935685,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Langevin, Christian D. 0000-0001-5610-9759 langevin@usgs.gov","orcid":"https://orcid.org/0000-0001-5610-9759","contributorId":1030,"corporation":false,"usgs":true,"family":"Langevin","given":"Christian","email":"langevin@usgs.gov","middleInitial":"D.","affiliations":[{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":935686,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hughes, Joseph D. 0000-0003-1311-2354 jdhughes@usgs.gov","orcid":"https://orcid.org/0000-0003-1311-2354","contributorId":2492,"corporation":false,"usgs":true,"family":"Hughes","given":"Joseph","email":"jdhughes@usgs.gov","middleInitial":"D.","affiliations":[{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":935687,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Russcher, Martijn J. 0000-0001-8799-6514","orcid":"https://orcid.org/0000-0001-8799-6514","contributorId":272524,"corporation":false,"usgs":false,"family":"Russcher","given":"Martijn","email":"","middleInitial":"J.","affiliations":[{"id":36257,"text":"Deltares","active":true,"usgs":false}],"preferred":false,"id":935688,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Chen, Chieh-Ying","contributorId":354439,"corporation":false,"usgs":false,"family":"Chen","given":"Chieh-Ying","affiliations":[{"id":38021,"text":"University of Illinois Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":935689,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lin, Yu-Feng 0000-0001-6454-0901","orcid":"https://orcid.org/0000-0001-6454-0901","contributorId":302351,"corporation":false,"usgs":false,"family":"Lin","given":"Yu-Feng","email":"","affiliations":[{"id":65462,"text":"Illinois Water Resources Center, University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":935690,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70263597,"text":"70263597 - 2025 - Remote single-station seismic monitoring of the July–October 2022 earthquake swarm at Tau volcano, American Samoa","interactions":[],"lastModifiedDate":"2025-02-19T15:57:20.28773","indexId":"70263597","displayToPublicDate":"2025-02-14T08:47:43","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":10542,"text":"The Seismic Record","active":true,"publicationSubtype":{"id":10}},"title":"Remote single-station seismic monitoring of the July–October 2022 earthquake swarm at Tau volcano, American Samoa","docAbstract":"From July to October 2022, a non-eruptive volcanic earthquake swarm occurred within ~15 km of Taʻū Island, located in eastern American Samoa. Felt reports from local residents were the only available information about the swarm when it started, as American Samoa lacked a seismic monitoring network. We developed a consistent single-station catalog for the entire swarm, using seismic data from the nearest station IU.AFI, ~250 km away. We applied the EQTransformer deep-learning model (Mousavi et al., 2020), automatically picking Pn and Sn arrivals on IU.AFI continuous data. We retained only events with Sn-Pn times of 22.5–25 seconds, consistent with the expected locations based on felt reports, then detected smaller swarm events with subsequent template-matching. This single-station catalog characterized the swarm’s onset and escalation to peak activity before a multi-agency field response team installed a local seismic network in mid-August 2022. This permanent seismic network captured the swarm’s decline. EQTransformer identified short S-P times on the first two locally deployed seismometers, both Raspberry Shake sensors, to constrain the swarm’s distance from Taʻū Island. Modern seismological processing methods, combined with basic observations such as felt reports, can quickly contribute useful information during an earthquake response in a poorly monitored region.","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0320240040","usgsCitation":"Yoon, C., Skoumal, R., Michael, A.J., Jolly, A., Ellis, A.P., Downs, D.T., Dotray, P., Deligne, N.I., Chang, J., Bennington, N.L., Wech, A., Haney, M.M., Hotovec-Ellis, A.J., Lutu-McMoore, E., and Langkilde, M., 2025, Remote single-station seismic monitoring of the July–October 2022 earthquake swarm at Tau volcano, American Samoa: The Seismic Record, v. 5, no. 1, p. 83-96, https://doi.org/10.1785/0320240040.","productDescription":"14 p.","startPage":"83","endPage":"96","ipdsId":"IP-170130","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":487646,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1785/0320240040","text":"Publisher Index Page"},{"id":482217,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"American Somoa","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -169.52912354628728,\n -14.200315944676532\n ],\n [\n -169.52912354628728,\n -14.276188945189261\n ],\n [\n -169.4027807728498,\n -14.276188945189261\n ],\n [\n -169.4027807728498,\n -14.200315944676532\n ],\n [\n -169.52912354628728,\n -14.200315944676532\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"5","issue":"1","noUsgsAuthors":false,"publicationDate":"2025-02-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Yoon, Clara 0000-0003-4521-3889","orcid":"https://orcid.org/0000-0003-4521-3889","contributorId":222019,"corporation":false,"usgs":true,"family":"Yoon","given":"Clara","email":"","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":927463,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Skoumal, Robert","contributorId":217693,"corporation":false,"usgs":true,"family":"Skoumal","given":"Robert","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":927464,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Michael, Andrew J. 0000-0002-2403-5019 michael@usgs.gov","orcid":"https://orcid.org/0000-0002-2403-5019","contributorId":1280,"corporation":false,"usgs":true,"family":"Michael","given":"Andrew","email":"michael@usgs.gov","middleInitial":"J.","affiliations":[{"id":234,"text":"Earthquake Hazards Program","active":true,"usgs":true},{"id":237,"text":"Earthquake 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0000-0003-4983-1991","orcid":"https://orcid.org/0000-0003-4983-1991","contributorId":202561,"corporation":false,"usgs":true,"family":"Wech","given":"Aaron","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":927473,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Haney, Matthew M. 0000-0003-3317-7884 mhaney@usgs.gov","orcid":"https://orcid.org/0000-0003-3317-7884","contributorId":172948,"corporation":false,"usgs":true,"family":"Haney","given":"Matthew","email":"mhaney@usgs.gov","middleInitial":"M.","affiliations":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":927474,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Hotovec-Ellis, Alicia J. 0000-0003-1917-0205","orcid":"https://orcid.org/0000-0003-1917-0205","contributorId":211785,"corporation":false,"usgs":true,"family":"Hotovec-Ellis","given":"Alicia","email":"","middleInitial":"J.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":927475,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Lutu-McMoore, Elinor","contributorId":341954,"corporation":false,"usgs":false,"family":"Lutu-McMoore","given":"Elinor","email":"","affiliations":[{"id":81814,"text":"NOAA National Weather Service Pago Pago Office","active":true,"usgs":false}],"preferred":false,"id":927476,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Langkilde, Marcus","contributorId":350957,"corporation":false,"usgs":false,"family":"Langkilde","given":"Marcus","affiliations":[{"id":83889,"text":"NOAA NWS Pago Pago","active":true,"usgs":false}],"preferred":false,"id":927477,"contributorType":{"id":1,"text":"Authors"},"rank":15}]}} ,{"id":70264632,"text":"70264632 - 2025 - Establishing historical baselines of arthropod assemblages using rodent paleomiddens","interactions":[],"lastModifiedDate":"2025-03-18T15:19:02.044943","indexId":"70264632","displayToPublicDate":"2025-02-14T08:06:23","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1839,"text":"Global Ecology and Biogeography","active":true,"publicationSubtype":{"id":10}},"title":"Establishing historical baselines of arthropod assemblages using rodent paleomiddens","docAbstract":"Aim
Arthropods are under-represented in paleoecological studies but are critical agents in ecological processes. Despite rigorous documentation of diverse arthropod assemblages from ancient rodent (or paleo) middens worldwide, their use for studying ancient arthropod diversity has stalled in recent decades. Here, we review published studies to identify how paleomidden arthropods can be leveraged to address significant questions in ecology and synthesise spatiotemporal trends in ancient arthropod diversity.
Location
Global with a focus on the Americas.
Time Period
From ~40,000 to 100 years before present.
Major Taxa Studied
Fossil arthropods preserved in rodent paleomiddens.
Methods
We identified four primary objectives in ecology that can be advanced using paleomidden arthropod fossils: the reconstruction of ancient biodiversity, the elucidation of mechanisms and processes driving arthropod range shifts, the incorporation of arthropods into ancient trophic webs, and the assessment of adaptive responses to changing environments.
Results
We identified 20 papers reporting arthropod remains, of which 14 provided data suitable for quantitative analyses. Although no significant differences in arthropod community diversity were found across broad geographic regions, substantial differences in community structure were observed. In North America, we also detected a decline in arthropod diversity from 10 to 5 ka BP, driven primarily by the absence of high-diversity assemblages during this period.
Main Conclusions
Paleomidden arthropods remain an underutilised ecological resource that can be leveraged to improve the inferential scope of arthropod research across spatiotemporal gradients. Collaboration between paleo- and neoecologists could help expand the sampling of ancient and modern arthropod communities, particularly those associated with paleomiddens, to create high-resolution datasets spanning important periods in biogeographical history. Paleomidden arthropods will remain a fundamental component for understanding arthropod biodiversity changes in the past, present, and future.
","language":"English","publisher":"Wiley","doi":"10.1111/geb.70006","usgsCitation":"Braasch, J., Betancourt, J.L., Dezerald, O., Peiris, U., Tapia-Rozas, M., Villagra, C., Latorre, C.L., and Gonzalez, A., 2025, Establishing historical baselines of arthropod assemblages using rodent paleomiddens: Global Ecology and Biogeography, v. 34, no. 2, e70006, 12 p., https://doi.org/10.1111/geb.70006.","productDescription":"e70006, 12 p.","ipdsId":"IP-172669","costCenters":[{"id":554,"text":"Science and Decisions Center","active":true,"usgs":true}],"links":[{"id":488330,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/geb.70006","text":"Publisher Index Page"},{"id":483474,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"2","noUsgsAuthors":false,"publicationDate":"2025-02-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Braasch, Joseph","contributorId":352381,"corporation":false,"usgs":false,"family":"Braasch","given":"Joseph","affiliations":[{"id":12727,"text":"Rutgers University","active":true,"usgs":false}],"preferred":false,"id":931016,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Betancourt, Julio L. 0000-0002-7165-0743 jlbetanc@usgs.gov","orcid":"https://orcid.org/0000-0002-7165-0743","contributorId":3376,"corporation":false,"usgs":true,"family":"Betancourt","given":"Julio","email":"jlbetanc@usgs.gov","middleInitial":"L.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":554,"text":"Science and Decisions Center","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":931017,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dezerald, Olivier","contributorId":336824,"corporation":false,"usgs":false,"family":"Dezerald","given":"Olivier","email":"","affiliations":[{"id":80869,"text":"DECOD (Ecosystem Dynamics and Sustainability), INRAE, Institut Agro, IFREMER, Rennes, France","active":true,"usgs":false}],"preferred":false,"id":931018,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peiris, Udari","contributorId":352382,"corporation":false,"usgs":false,"family":"Peiris","given":"Udari","affiliations":[{"id":84194,"text":"Pontificia Universidad Católica de Chile, Santiago","active":true,"usgs":false}],"preferred":false,"id":931019,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tapia-Rozas, Maura","contributorId":352383,"corporation":false,"usgs":false,"family":"Tapia-Rozas","given":"Maura","affiliations":[{"id":84194,"text":"Pontificia Universidad Católica de Chile, Santiago","active":true,"usgs":false}],"preferred":false,"id":931020,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Villagra, Cristian","contributorId":352384,"corporation":false,"usgs":false,"family":"Villagra","given":"Cristian","affiliations":[{"id":84195,"text":"Universidad Metropolitana de Ciencias de la Educación, Santiago, Chile","active":true,"usgs":false}],"preferred":false,"id":931021,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Latorre, Claudio L.","contributorId":331520,"corporation":false,"usgs":false,"family":"Latorre","given":"Claudio","email":"","middleInitial":"L.","affiliations":[{"id":79225,"text":"Pontificia Universidad Católica de Chile, Santiago, Chile","active":true,"usgs":false}],"preferred":false,"id":931022,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gonzalez, Angelica L.","contributorId":336826,"corporation":false,"usgs":false,"family":"Gonzalez","given":"Angelica L.","affiliations":[{"id":12727,"text":"Rutgers University","active":true,"usgs":false}],"preferred":false,"id":931023,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70263500,"text":"sir20245127 - 2025 - Groundwater age estimates for the Mississippi River Valley alluvial aquifer based on tracer data collected during 2018–20","interactions":[],"lastModifiedDate":"2025-07-21T18:22:10.201666","indexId":"sir20245127","displayToPublicDate":"2025-02-13T14:55:22","publicationYear":"2025","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2024-5127","displayTitle":"Groundwater Age Estimates for the Mississippi River Valley Alluvial Aquifer Based on Tracer Data Collected During 2018–20","title":"Groundwater age estimates for the Mississippi River Valley alluvial aquifer based on tracer data collected during 2018–20","docAbstract":"This study characterized groundwater age across the Mississippi River Valley alluvial aquifer (MRVA). Groundwater samples from 69 MRVA wells and 19 wells in Tertiary units of the Mississippi embayment aquifer system (MEAS) were analyzed for sulfur hexafluoride (SF6), tritium (3H), helium (He), and (or) carbon-14 of dissolved inorganic carbon (14C). The age distributions of 89 samples were estimated by fitting lumped parameter models to processed tracer concentrations with the U.S. Geological Survey software TracerLPM. Mean ages of MRVA groundwater samples ranged from 12 to 22,000 years, with a median of 140 years. Mean ages of MEAS groundwater samples ranged from 230 to 52,000 or more years, with a median of 13,500 years. The spatial distribution of MRVA groundwater ages was found to be influenced by depth, inflow of groundwater from deeper units, and soil saturated hydraulic conductivity. In parts of the MRVA, the spatial distribution of MRVA groundwater ages was found to be influenced by annual recharge and (or) annual groundwater pumpage.
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","tableOfContents":"The rapid advancement of environmental DNA (eDNA) science in the past two decades has inspired a concomitant growth in the development of eDNA sampling and analytical methods. However, these methods are often developed by individual laboratories or institutions, which can isolate protocols within programmes, agencies or regions and prevent the beneficial exchange of data and ideas. Recent efforts to advance national and international coordination have resulted in a groundswell of standardisation efforts, but there is still considerable confusion around the role of formal standards for regulatory or research applications. With this commentary, we hope to provide clarity on the terminology used in standardisation discussions, including the differences between formal standards and best practice guidelines. Additionally, we discuss how eDNA method choice may be informed by environmental management scenarios and review examples of formal eDNA method standards being used to inform management action. The eDNA community now has an opportunity to develop a roadmap for method development to help close standardisation gaps, advance eDNA method adoption and accelerate our ability to monitor biological life at the scales our current environmental challenges demand.
","language":"English","publisher":"Pensoft","doi":"10.3897/mbmg.9.132076","usgsCitation":"Theroux, S., Sepulveda, A., Abbott, C., Gold, Z., Watts, A., Hunter, M., Klymus, K.E., Hirsch, S., Craine, J.M., Jones-Slobodian, D.N., Brown, R., Steele, J., Takahashi, M., Noble, R.T., and Darling, J.A., 2025, What is eDNA method standardization and why do we need it?: Metabarcoding and Metagenomics, v. 9, e132076, 16 p., https://doi.org/10.3897/mbmg.9.132076.","productDescription":"e132076, 16 p.","ipdsId":"IP-167695","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true},{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":489778,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3897/mbmg.9.132076","text":"Publisher Index Page"},{"id":482267,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","noUsgsAuthors":false,"publicationDate":"2025-02-13","publicationStatus":"PW","contributors":{"authors":[{"text":"Theroux, Susanna","contributorId":244544,"corporation":false,"usgs":false,"family":"Theroux","given":"Susanna","affiliations":[],"preferred":false,"id":927815,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sepulveda, Adam 0000-0001-7621-7028 asepulveda@usgs.gov","orcid":"https://orcid.org/0000-0001-7621-7028","contributorId":4187,"corporation":false,"usgs":true,"family":"Sepulveda","given":"Adam","email":"asepulveda@usgs.gov","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":927816,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Abbott, Cathryn L.","contributorId":350357,"corporation":false,"usgs":false,"family":"Abbott","given":"Cathryn 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0000-0002-4760-9302","orcid":"https://orcid.org/0000-0002-4760-9302","contributorId":207584,"corporation":false,"usgs":true,"family":"Hunter","given":"Margaret","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":927819,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Klymus, Katy E. 0000-0002-8843-6241 kklymus@usgs.gov","orcid":"https://orcid.org/0000-0002-8843-6241","contributorId":5043,"corporation":false,"usgs":true,"family":"Klymus","given":"Katy","email":"kklymus@usgs.gov","middleInitial":"E.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":927820,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hirsch, Shana L.","contributorId":351152,"corporation":false,"usgs":false,"family":"Hirsch","given":"Shana L.","affiliations":[],"preferred":false,"id":927993,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Craine, Joseph M.","contributorId":139154,"corporation":false,"usgs":false,"family":"Craine","given":"Joseph","email":"","middleInitial":"M.","affiliations":[{"id":12661,"text":"Kansas State University","active":true,"usgs":false}],"preferred":false,"id":927994,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Jones-Slobodian, Devin Nicole 0000-0001-9215-2930","orcid":"https://orcid.org/0000-0001-9215-2930","contributorId":305357,"corporation":false,"usgs":true,"family":"Jones-Slobodian","given":"Devin","middleInitial":"Nicole","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":927821,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Brown, Rachel J.","contributorId":350358,"corporation":false,"usgs":false,"family":"Brown","given":"Rachel J.","affiliations":[{"id":52582,"text":"US Fish and Wildlife","active":true,"usgs":false}],"preferred":false,"id":927822,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Steele, Joshua A.","contributorId":350364,"corporation":false,"usgs":false,"family":"Steele","given":"Joshua A.","affiliations":[{"id":12704,"text":"Southern California Coastal Water Research Project","active":true,"usgs":false}],"preferred":false,"id":927995,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Takahashi, Miwa","contributorId":350365,"corporation":false,"usgs":false,"family":"Takahashi","given":"Miwa","affiliations":[{"id":83724,"text":"Indian Oceans Marine Research Centre, Australia","active":true,"usgs":false}],"preferred":false,"id":927996,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Noble, Rachel 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review","interactions":[],"lastModifiedDate":"2025-08-04T15:44:57.109852","indexId":"70267291","displayToPublicDate":"2025-02-13T08:15:47","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2869,"text":"New Zealand Journal of Geology and Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"The communication of volcano information in New Zealand - A narrative review","docAbstract":"Communication of volcano information is critical for effective volcanic risk management. A variety of information is communicated to inform decisions and guide actions for planning, preparedness, and response. Such information needs to be reliable, and fit-for-purpose across different stages of volcanic activity (quiescence, unrest, short or long-term eruptive stages, and the post-eruptive stage). However, an understanding of communication across these different stages of volcanic activity remains limited. We undertook a narrative review of New Zealand literature to explore what information is communicated about volcanoes, across which stages of activity and by whom. Results highlight that NZ literature only documents certain aspects of volcano information and communication, specifically regarding certain locations, stages of volcanic activity (i.e. quiescence or unrest), or hazards. Literature gaps exist regarding volcano communication during unrest and post-eruptive stages, as well as how volcano information evolves between these phases, and how decision-makers use such information. Additional work would be useful to document existing examples of volcano information for different stages of activity. Further research could help in understanding the information needs of decision-makers during each of these stages to improve information and communication.
","language":"English","publisher":"Taylor & Francis","doi":"10.1080/00288306.2025.2454558","usgsCitation":"Das, M., Becker, J., Doyle, E., Charlton, D., Clive, M.A., Krippner, J., Vinnell, L., Miller, C.A., Stewart, C., Gabrielsen, H., Potter, S., Leonard, G., Johnston, D.M., Tapuke, K., Fournier, N., and McBride, S., 2025, The communication of volcano information in New Zealand - A narrative review: New Zealand Journal of Geology and Geophysics, v. 68, no. 4, p. 591-608, https://doi.org/10.1080/00288306.2025.2454558.","productDescription":"18 p.","startPage":"591","endPage":"608","ipdsId":"IP-162228","costCenters":[{"id":78686,"text":"Geologic Hazards Science Center - Seismology / Geomagnetism","active":true,"usgs":true}],"links":[{"id":486157,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":489133,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1080/00288306.2025.2454558","text":"Publisher Index Page"}],"country":"New Zealand","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 171.99324824868404,\n -33.98420412080025\n ],\n [\n 171.99324824868404,\n -41.683153233580086\n ],\n [\n 178.86093212265428,\n -41.683153233580086\n ],\n [\n 178.86093212265428,\n -33.98420412080025\n ],\n [\n 171.99324824868404,\n -33.98420412080025\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"68","issue":"4","noUsgsAuthors":false,"publicationDate":"2025-02-13","publicationStatus":"PW","contributors":{"authors":[{"text":"Das, Manomita","contributorId":355560,"corporation":false,"usgs":false,"family":"Das","given":"Manomita","affiliations":[{"id":13571,"text":"Massey University","active":true,"usgs":false}],"preferred":false,"id":937625,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Becker, Julia S.","contributorId":217541,"corporation":false,"usgs":false,"family":"Becker","given":"Julia S.","affiliations":[{"id":36277,"text":"GNS Science","active":true,"usgs":false}],"preferred":false,"id":937626,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Doyle, Emma Hudson","contributorId":355561,"corporation":false,"usgs":false,"family":"Doyle","given":"Emma Hudson","affiliations":[{"id":13571,"text":"Massey University","active":true,"usgs":false}],"preferred":false,"id":937627,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Charlton, Danielle 0000-0002-7837-514X","orcid":"https://orcid.org/0000-0002-7837-514X","contributorId":302366,"corporation":false,"usgs":false,"family":"Charlton","given":"Danielle","email":"","affiliations":[{"id":36277,"text":"GNS Science","active":true,"usgs":false}],"preferred":false,"id":937628,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Clive, Mary Ann T.","contributorId":330167,"corporation":false,"usgs":false,"family":"Clive","given":"Mary","email":"","middleInitial":"Ann T.","affiliations":[{"id":78832,"text":"Waipapa Taumata Rau University of Auckland; 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The earliest unrest was noted as felt shaking reports in late July, and instrumentation varied in the beginning of the sequence as the U.S. Geological Survey (USGS) Hawaiian Volcano Observatory responded by installing temporary and then permanent seismometers to monitor the activity. This network variability made it difficult to characterize the earliest seismicity and contextualize the entire sequence to discriminate between an underlying tectonic or volcanic source. Here, we present results analyzing hydroacoustic detections from an International Monitoring System hydrophone array near Wake Island, 4500 km northwest of Taʻū Island volcano. Using least-squares beamforming analysis, we create a catalog of T-wave detections from the direction of Taʻū Island to track the earthquakes, some of which were located by the USGS National EarthquakeInformation Center. Both the rate and hydroacoustic pressures, which we interpret as a proxy for earthquake size, gradually increased from late July to August, peaking on August 19 (rate) and August 24 (size), before decreasing to background in late September. Minutes-long bursts of tremor were also contemporaneously recorded as local network data became avail-able on August 20. Tremor activity continued throughout the rest of August, peaking on August 25, before ending in earlySeptember. These tremor bursts were band-limited to ~ 1–5 Hz and recorded as S waves at a regional station on the island of Upolu in Samoa, 250 km to the west of Taʻū Island. Our results do not constrain the tremor locations, but comparisons of earthquake and tremor reduced displacements recorded locally and regionally suggest a deeper tremor source. We interpret the increase in earthquake size and rate, together with the occurrence, characteristics, and relative depth of the tremor to be the result of magmatic activity beneath Taʻū Island volcano.","language":"English","publisher":"Springer Nature","doi":"10.1007/s00445-025-01798-0","usgsCitation":"Wech, A., Haney, M.M., Chang, J., Jolly, A., Yoon, C., and Skoumal, R.J., 2025, Local, regional, and distal recordings of seismic unrest at Tau Island volcano, American Samoa: Bulletin of Volcanology, v. 87, 15, 15 p., https://doi.org/10.1007/s00445-025-01798-0.","productDescription":"15, 15 p.","ipdsId":"IP-172244","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":483947,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"American Samoa, Taʻū Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -169.53339284390117,\n -14.197912338111138\n ],\n [\n -169.53339284390117,\n -14.283297461659885\n ],\n [\n -169.4061487117877,\n -14.283297461659885\n ],\n [\n -169.4061487117877,\n -14.197912338111138\n ],\n [\n -169.53339284390117,\n -14.197912338111138\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"87","noUsgsAuthors":false,"publicationDate":"2025-02-13","publicationStatus":"PW","contributors":{"authors":[{"text":"Wech, Aaron 0000-0003-4983-1991","orcid":"https://orcid.org/0000-0003-4983-1991","contributorId":202561,"corporation":false,"usgs":true,"family":"Wech","given":"Aaron","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":932148,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haney, Matthew M. 0000-0003-3317-7884 mhaney@usgs.gov","orcid":"https://orcid.org/0000-0003-3317-7884","contributorId":172948,"corporation":false,"usgs":true,"family":"Haney","given":"Matthew","email":"mhaney@usgs.gov","middleInitial":"M.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":932149,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chang, Jefferson 0000-0002-1258-589X","orcid":"https://orcid.org/0000-0002-1258-589X","contributorId":215608,"corporation":false,"usgs":true,"family":"Chang","given":"Jefferson","email":"","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":932150,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jolly, A.D. 0000-0003-1020-9062","orcid":"https://orcid.org/0000-0003-1020-9062","contributorId":296487,"corporation":false,"usgs":true,"family":"Jolly","given":"A.D.","email":"","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":932151,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yoon, Clara 0000-0003-4521-3889","orcid":"https://orcid.org/0000-0003-4521-3889","contributorId":222019,"corporation":false,"usgs":true,"family":"Yoon","given":"Clara","email":"","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":932152,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Skoumal, Robert J. 0000-0002-5627-6239 rskoumal@usgs.gov","orcid":"https://orcid.org/0000-0002-5627-6239","contributorId":191213,"corporation":false,"usgs":true,"family":"Skoumal","given":"Robert","email":"rskoumal@usgs.gov","middleInitial":"J.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":932153,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70266058,"text":"70266058 - 2025 - New distributional record of the federally threatened Rabbitsfoot Mussel (Theliderma cylindrica) in Oklahoma","interactions":[],"lastModifiedDate":"2025-04-24T15:18:54.352194","indexId":"70266058","displayToPublicDate":"2025-02-13T08:08:28","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3444,"text":"Southeastern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"New distributional record of the federally threatened Rabbitsfoot Mussel (Theliderma cylindrica) in Oklahoma","docAbstract":"Sampling conducted from May to August of 2024 yielded new distributional records for the federally threatened Theliderma cylindrica (Rabbitsfoot) in the Caney River, OK. We found 4 live individuals, representing at least 2 age classes, ∼7 km upstream of the confluence with the Verdigris River. This report is the first documentation of live Rabbitsfoot in the Caney River, where the species was previously known only from weathered shells. This finding extends the known distribution of Rabbitsfoot into a system previously unrecognized as part of its range.
","language":"English","publisher":"BioOne","doi":"10.1656/058.024.0103","usgsCitation":"Torolski, H., Long, J.M., Lonsinger, R.C., and Bruckerhoff, L., 2025, New distributional record of the federally threatened Rabbitsfoot Mussel (Theliderma cylindrica) in Oklahoma: Southeastern Naturalist, v. 24, no. 1, p. 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Biological responses in single metal exposures are used to parameterize toxicity functions, which include accumulations of hydrogen and selected metals on biological receptors, intrinsic potencies of hydrogen and metals, sensitivities of organisms, and times of exposure. The model then is used to predict responses in multiple metal laboratory exposures and field-collected porewater. The following sensitivity sequence in porewater was determined based on endpoints of survival or total abundance: juvenile white sturgeon greater than (>) Ephemerellidae family > Hyalella azteca > Heptageniidae family about equal to (~) benthic macroinvertebrate community > Brachycentridae family. The fraction of porewater samples that are predicted to have adverse impacts on benthic biota (20-percent or greater negative response) depends on organism sensitivities and metal toxicities, and ranges from 44 to 48 percent for juvenile white sturgeon, 23 to 26 percent for the Ephemerellidae family, 16 to 22 percent for Hyalella azteca, 5 to 8 percent for the Heptageniidae family and BMI community, and 0 percent for the caddisfly family. The most toxic porewater in the upper Columbia River Basin (UCR) is at the backwater bar site at Deadmans Eddy and China Bend. The model also indicates that the element responsible for the most toxic conditions in UCR porewater is copper for all organisms, except Hyalella azteca and the metal-insensitive Brachycentridae family. Copper and lead result in the most toxic conditions for Hyalella azteca. This approach and results can aid in assessing metal toxicity and its potential risk to aquatic biota in ecosystems impacted by historical mining activities.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20255001","collaboration":"Prepared in cooperation with the U.S. Environmental Protection Agency","usgsCitation":"Balistrieri, L.S., 2025, Sensitivity of benthic biota and toxicity of cadmium, cobalt, copper, nickel, lead, and zinc mixtures in Washington, United States, and British Columbia, Canada: U.S. Geological Survey Scientific Investigations Report 2025–5001, 19 p., https://doi.org/10.3133/sir20255001.","productDescription":"v, 19 p.","onlineOnly":"Y","ipdsId":"IP-168170","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":492689,"rank":6,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_118446.htm","linkFileType":{"id":5,"text":"html"}},{"id":482001,"rank":4,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/sir/2025/5001/images"},{"id":482002,"rank":5,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/sir/2025/5001/sir20255001.XML"},{"id":482000,"rank":3,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/sir20255001/full","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"SIR 2025-5001"},{"id":481999,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2025/5001/sir20255001.pdf","text":"Report","size":"2.2 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2025-5001"},{"id":481998,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2025/5001/coverthb.jpg"}],"country":"Canada, United States","state":"British Columbia, Washington","otherGeospatial":"Upper Columbia River basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.333,\n 49.5\n ],\n [\n -118.333,\n 49.5\n ],\n [\n -118.333,\n 48.6\n ],\n [\n -117.333,\n 48.6\n ],\n [\n -117.333,\n 49.5\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Director, Washington Water Science Center
U.S. Geological Survey
934 Broadway, Suite 300
Tacoma, Washington 98402
Advanced Research Computing provides access to high-performance computing (HPC) resources as well as training and consultation for effective use of these powerful systems. This product outlines current HPC machines, capabilities, classes, and enabled science.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/gip248","usgsCitation":"Colasuonno, L.T., Uribe, R.D., Gordon, J., and Falgout, J.T., 2025, Advanced Research Computing (ver. 1.1, March 2025): U.S. Geological Survey General Information Product 248, https://doi.org/10.3133/gip248.","productDescription":"2 p.","onlineOnly":"N","ipdsId":"IP-163164","costCenters":[{"id":37273,"text":"Advanced Research Computing (ARC)","active":true,"usgs":true},{"id":38128,"text":"Science Analytics and Synthesis","active":true,"usgs":true}],"links":[{"id":481680,"rank":3,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/gip/248/gip248.xml"},{"id":481702,"rank":4,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/gip/248/images"},{"id":481996,"rank":5,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/gip248/full","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"GIP 248"},{"id":481677,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gip/248/coverthb2.jpg"},{"id":481678,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gip/248/gip248.pdf","text":"Flyer","size":"1.44 MB","linkFileType":{"id":1,"text":"pdf"},"description":"GIP 248"},{"id":483239,"rank":6,"type":{"id":25,"text":"Version History"},"url":"https://pubs.usgs.gov/gip/248/versionHist.txt","text":"Version History","size":"8.0 KB","linkFileType":{"id":2,"text":"txt"},"description":"GIP 248 version history"}],"edition":"Version 1.0: February 12, 2025; Version 1.1: March 12, 2025","contact":"Director, Science Analytics and Synthesis Program
U.S. Geological Survey
Box 25046, Mail Stop 302
Denver, CO 80225
In the arid Grand Canyon region, water resources are limited to primarily the Colorado River and associated tributaries and to groundwater in the form of seeps and springs. Groundwater resources in the region supply water for human use and support diverse and rich ecosystems in the locations immediately surrounding the seeps and springs. Throughout the region, uranium resources occur and may interact with water resources in both mined and unmined uranium deposits. There is a need to better understand groundwater in the region and the effects from uranium mining in order to better manage the limited water resources in the area. This Fact Sheet summarizes results from U.S. Geological Survey studies that were conducted on this topic from 2012 to 2023.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/fs20243055","issn":"2327-6916, 2327-6932","collaboration":"Prepared in cooperation with the National Park Service","programNote":"Environmental Health Program","usgsCitation":"Beisner, K.R., Siebers, B.J., Tillman, F.D., and Walton-Day, K., 2025, Water resources related to breccia pipe uranium mining in the Grand Canyon region: U.S. Geological Survey Fact Sheet 2024–3055, 4 p., https://doi.org/10.3133/fs20243055.","productDescription":"4 p.","numberOfPages":"4","onlineOnly":"N","ipdsId":"IP-160657","costCenters":[{"id":472,"text":"New Mexico Water Science Center","active":true,"usgs":true}],"links":[{"id":481937,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2024/3055/coverthb.jpg"},{"id":481947,"rank":12,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.3133/sir20225037","text":"USGS SIR 2022–5037","linkHelpText":"- Conceptual models of groundwater flow in the Grand Canyon region, Arizona"},{"id":481948,"rank":13,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.1007/s10040-020-02193-z","text":"Journal Article","linkHelpText":"- Rethinking groundwater flow on the South Rim of the Grand Canyon, USA—Characterizing recharge sources and flow paths with environmental tracers"},{"id":481938,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2024/3055/fs20243055.pdf","size":"1.97 MB","linkFileType":{"id":1,"text":"pdf"},"description":"FS 2024-3055"},{"id":481939,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2024/3055/fs20243055_printer-friendly.pdf","text":"Printer Friendly Supplemental File","size":"1.98 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Printer Friendly FS 2024-3055"},{"id":481940,"rank":4,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/fs/2024/3055/images"},{"id":481941,"rank":5,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/fs/2024/3055/fs20243055.XML","linkFileType":{"id":8,"text":"xml"},"description":"FS 2024-3055 XML"},{"id":483257,"rank":6,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/fs20243055/full","linkFileType":{"id":5,"text":"html"},"description":"FS 2024-3055 HTML"},{"id":481951,"rank":7,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.3133/fs20243003","text":"USGS FS 2024–3003","linkHelpText":"- Balancing natural resource use and extraction of uranium and other elements in the Grand Canyon region"},{"id":481943,"rank":8,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/sir/2010/5025/","text":"USGS SIR 2010–5025","linkHelpText":"- Hydrological, geological, and biological site characterization of breccia pipe uranium deposits in northern Arizona"},{"id":481944,"rank":9,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.1144/geochem2023-007","text":"Journal Article","linkHelpText":"- Anthropogenic influence on groundwater geochemistry in Horn Creek watershed near the Orphan Mine in Grand Canyon National Park, Arizona, USA"},{"id":481945,"rank":10,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.1016/j.ejrh.2023.101461","text":"Journal Article","linkHelpText":"- Utilizing anthropogenic compounds and geochemical tracers to identify preferential structurally controlled groundwater pathways influencing springs in Grand Canyon National Park, Arizona, USA"},{"id":481946,"rank":11,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.1007/s10040-016-1494-8","text":"Journal Article","linkHelpText":"- Geochemistry and hydrology of perched groundwater springs—Assessing elevated uranium concentrations at Pigeon Spring relative to nearby Pigeon Mine, Arizona (USA)"},{"id":481949,"rank":14,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.1371/journal.pone.0241502","text":"Journal Article","linkHelpText":"- Assessing uranium and select trace elements associated with breccia pipe uranium deposits in the Colorado River and main tributaries in Grand Canyon, USA"},{"id":481950,"rank":15,"type":{"id":22,"text":"Related Work"},"url":"https://doi.org/10.1038/s41598-021-01621-8","text":"Journal Article","linkHelpText":"- An assessment of uranium in groundwater in the Grand Canyon region"}],"country":"United States","state":"Arizona","otherGeospatial":"Grand Canyon region","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -111.31257554612749,\n 36.98617449546404\n ],\n [\n -114.0381223568529,\n 36.98617449546404\n ],\n [\n -114.0381223568529,\n 35.5450981868304\n ],\n [\n -111.31257554612749,\n 35.5450981868304\n ],\n [\n -111.31257554612749,\n 36.98617449546404\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Director, New Mexico Water Science Center
U.S. Geological Survey
6700 Edith Blvd. NE
Albuquerque, NM 87113
Contact Us- USGS Publications Warehouse
","tableOfContents":"Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 3.3 billion barrels of oil and 80.3 trillion cubic feet of gas in the Zagros Fold Belt of Iran, Iraq, Syria, and Turkey.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/fs20243048","programNote":"National and Global Petroleum Assessment","usgsCitation":"Schenk, C.J., Mercier, T.J., Le, P.A., Cicero, A.D., Drake, R.M., II, Gelman, S.E., Hearon, J.S., Johnson, B.G., Lagesse, J.H., Leathers-Miller, H.M., and Timm, K.K., 2025, Assessment of undiscovered conventional oil and gas resources of the Zagros Fold Belt of Iran, Iraq, Syria, and Turkey, 2023: U.S. Geological Survey Fact Sheet 2024–3048, 4 p., https://doi.org/10.3133/fs20243048.","productDescription":"Report: 4 p.; Data Release","onlineOnly":"Y","ipdsId":"IP-156237","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":482084,"rank":6,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/fs20243048/full","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"FS 2024-3048"},{"id":482048,"rank":4,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/fs/2024/3048/images"},{"id":482049,"rank":5,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/fs/2024/3048/fs20243048.xml"},{"id":481802,"rank":3,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/P133QODA","text":"USGS data release","linkHelpText":"USGS National and Global Oil and Gas Assessment Project—Zagros Fold Belt of Iran and Turkey—Assessment unit boundaries, input data tables, and fact sheet data tables"},{"id":481771,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2024/3048/fs20243048.pdf","text":"Report","size":"2.21 MB","linkFileType":{"id":1,"text":"pdf"},"description":"FS 2024-3048"},{"id":481770,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2024/3048/coverthb.jpg"}],"country":"Iran, Iraq, Syria,Turkey","otherGeospatial":"Zagros Fold Belt","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 36,\n 36\n ],\n [\n 36,\n 26\n ],\n [\n 56,\n 26\n ],\n [\n 56,\n 36\n ],\n [\n 36,\n 36\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Director, Central Energy Resources Science Center
U.S. Geological Survey
Box 25046, MS-939
Denver, CO 80225-0046
This study addresses a significant gap in understanding the features of the south-central Cascadia subduction zone, a region characterized by complex geologic, tectonic, and seismic transitions both offshore and onshore. Unlike other segments along this margin, this area lacks a 3-D velocity model to delineate its structural and geological features on a fine scale. To address this void, we developed a high-resolution 3-D P-wave velocity model using active source seismic data from ship-borne seismic shots recorded on temporary and permanent onshore seismic stations and ocean-bottom seismometers. Our model shows velocity variations across the region with distinct velocity-depth profiles for the Siletz, Franciscan, and Klamath terranes in the overlying plate. We identified seaward dipping high-velocity static backstops associated with the Siletz and Klamath terranes, situated near the shoreline and further inland, respectively. Regions of reduced crustal velocity are associated with crustal faults. Moreover, there is significant along-strike depth variation in the subducting slab, which is about 4 km deeper near the thick, dense Siletz terrane and becomes shallower near the predominantly less-dense Franciscan terrane. This highlights a sudden tectonic and geologic transition at the southern boundary of the Siletz terrane. Our velocity model also indicates slightly increased hydration, though still minimal, in both the oceanic crust and the upper mantle of the subducting plate compared to other parts of the margin.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2024JB029525","usgsCitation":"Ashraf, A., Hooft, E., Toomey, D., Trehu, A., Nolan, S., Wirth, E.A., and Ward, K.M., 2025, A high-resolution 3-D P-wave velocity structure of the south-central Cascadia subduction zone from wide-angle shore-crossing seismic refraction data: JGR Solid Earth, v. 130, e2024JB029525, 23 p., https://doi.org/10.1029/2024JB029525.","productDescription":"e2024JB029525, 23 p.","ipdsId":"IP-165201","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":487643,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1029/2024JB029525","text":"External Repository"},{"id":482045,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, California, Oregon, Washington","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -121.05502627728873,\n 50\n ],\n [\n -130,\n 50\n ],\n [\n -130,\n 40\n ],\n [\n -122,\n 40\n ],\n [\n -122,\n 50\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"130","noUsgsAuthors":false,"publicationDate":"2025-02-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Ashraf, Asif","contributorId":350925,"corporation":false,"usgs":false,"family":"Ashraf","given":"Asif","affiliations":[{"id":80428,"text":"Univ. of Oregon","active":true,"usgs":false}],"preferred":false,"id":927325,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hooft, Emilie","contributorId":350929,"corporation":false,"usgs":false,"family":"Hooft","given":"Emilie","affiliations":[{"id":80428,"text":"Univ. of Oregon","active":true,"usgs":false}],"preferred":false,"id":927326,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Toomey, Douglas 0000-0003-2873-4084","orcid":"https://orcid.org/0000-0003-2873-4084","contributorId":206934,"corporation":false,"usgs":false,"family":"Toomey","given":"Douglas","affiliations":[{"id":27574,"text":"UO","active":true,"usgs":false}],"preferred":false,"id":927327,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Trehu, Anne 0000-0002-5349-3289","orcid":"https://orcid.org/0000-0002-5349-3289","contributorId":242894,"corporation":false,"usgs":false,"family":"Trehu","given":"Anne","email":"","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":927328,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nolan, Sarah","contributorId":350932,"corporation":false,"usgs":false,"family":"Nolan","given":"Sarah","affiliations":[{"id":12722,"text":"Cornell University","active":true,"usgs":false}],"preferred":false,"id":927329,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wirth, Erin A. 0000-0002-8592-4442","orcid":"https://orcid.org/0000-0002-8592-4442","contributorId":207853,"corporation":false,"usgs":true,"family":"Wirth","given":"Erin","middleInitial":"A.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":927330,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ward, Kevin M.","contributorId":206723,"corporation":false,"usgs":false,"family":"Ward","given":"Kevin","email":"","middleInitial":"M.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":927331,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70273044,"text":"70273044 - 2025 - Fine-scale farming features drive resource selection of a small carnivore of conservation concern","interactions":[],"lastModifiedDate":"2025-12-12T16:03:17.137296","indexId":"70273044","displayToPublicDate":"2025-02-12T10:01:25","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1176,"text":"Canadian Journal of Zoology","active":true,"publicationSubtype":{"id":10}},"title":"Fine-scale farming features drive resource selection of a small carnivore of conservation concern","docAbstract":"Anthropogenic factors are accelerating species extinction, with small mammalian carnivores among the most affected. These species play vital ecological roles, yet their conservation needs are often overlooked. Our study focused on the plains spotted skunk (Spilogale interrupta (Rafinesque, 1820)), a small carnivore that has experienced population declines. We hypothesized that their resource selection was influenced by factors expected to influence prey availability, protection from predators, and human activity. We tracked 14 plains spotted skunks in east-central South Dakota, USA, over 2 years during spring and summer. Using mixed-effects logistic regression, we identified seasonal habitat associations. In spring, plains spotted skunks selected areas near farming structures and human development, avoiding high wetland density and crop cover. In summer, they continued to select areas near farming structures and low human development, but also high wetland density and pasture, while avoiding hay bales and crop cover. Our first analysis of the species’ resource use in the Great Plains indicates that plains spotted skunks select habitats with permanent small-scale agricultural features and varying levels of human development across seasons. Our findings suggest that species’ persistence in the region may depend on conservation strategies that account for seasonal planning, habitat heterogeneity, and key agricultural structures.
","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/cjz-2024-0096","usgsCitation":"White, K.M., Cheeseman, A.E., Stafford, J.D., and Lonsinger, R.C., 2025, Fine-scale farming features drive resource selection of a small carnivore of conservation concern: Canadian Journal of Zoology, v. 103, p. 1-12, https://doi.org/10.1139/cjz-2024-0096.","productDescription":"12 p.","startPage":"1","endPage":"12","ipdsId":"IP-165837","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":497475,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"103","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"White, Kara M.","contributorId":363978,"corporation":false,"usgs":false,"family":"White","given":"Kara","middleInitial":"M.","affiliations":[{"id":5089,"text":"South Dakota State University","active":true,"usgs":false}],"preferred":false,"id":952141,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cheeseman, Amanda E.","contributorId":363980,"corporation":false,"usgs":false,"family":"Cheeseman","given":"Amanda","middleInitial":"E.","affiliations":[{"id":5089,"text":"South Dakota State University","active":true,"usgs":false}],"preferred":false,"id":952142,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stafford, Joshua D. 0000-0001-7590-8708 jstafford@usgs.gov","orcid":"https://orcid.org/0000-0001-7590-8708","contributorId":267260,"corporation":false,"usgs":true,"family":"Stafford","given":"Joshua","email":"jstafford@usgs.gov","middleInitial":"D.","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":952143,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lonsinger, Robert Charles 0000-0002-1040-7299","orcid":"https://orcid.org/0000-0002-1040-7299","contributorId":340524,"corporation":false,"usgs":true,"family":"Lonsinger","given":"Robert","email":"","middleInitial":"Charles","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":952144,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70263782,"text":"70263782 - 2025 - Chemical and isotopic fractionation during melt inclusion formation","interactions":[],"lastModifiedDate":"2025-04-17T15:31:17.839087","indexId":"70263782","displayToPublicDate":"2025-02-12T09:51:32","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Chemical and isotopic fractionation during melt inclusion formation","docAbstract":"Melt inclusions are used to study the origin and evolution of magmas. The extent to which they represent equilibrium melt compositions, however, critically hinges on the ratio of crystal growth rate to diffusion rate in melts. If the rate of crystal growth is limited by the supply of nutrients and the dissipation of unwanted components, the trapped melt will be depleted in compatible elements and enriched in incompatible elements. Despite widespread recognition of the potential for melt inclusions to trap disequilibrium compositions, their identification remains a challenge. Here, we demonstrate how stable isotopes provide a solution to this problem. Melt inclusions in basaltic tephra from Kīlauea volcano, Hawai‘i, display Mg isotope fractionation up to 0.49‰ (26Mg/24Mg) relative to bulk rock. These observations indicate that kinetic processes, such as chemical diffusion, are at play, as equilibrium mineral-melt isotope fractionation at high temperatures is an order of magnitude smaller. We propose that the heavy Mg isotopic compositions of the melt inclusions were generated by the faster diffusion and thus preferential incorporation of 24Mg by the growing olivine, leaving the slower diffusant (26Mg) behind. The incompatible elements (e.g., Ca, Ti, and K) are predicted to display similarly large fractionations when boundary layer effects are significant. These findings show that stable isotopes can be a useful tool in identifying disequilibrium compositions in melt inclusions.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/G52248.1","usgsCitation":"da Silva Ricardo, B., Oeser, M., Lynn, K.J., Bennett, N., Chu, X., Henderson, G., Liu, Y., Weyer, S., and Sio, C., 2025, Chemical and isotopic fractionation during melt inclusion formation: Geology, v. 53, no. 4, p. 375-379, https://doi.org/10.1130/G52248.1.","productDescription":"5 p.","startPage":"375","endPage":"379","ipdsId":"IP-164130","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":482385,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"4","noUsgsAuthors":false,"publicationDate":"2025-02-10","publicationStatus":"PW","contributors":{"authors":[{"text":"da Silva Ricardo, Bruna","contributorId":351234,"corporation":false,"usgs":false,"family":"da Silva Ricardo","given":"Bruna","affiliations":[{"id":7044,"text":"University of Toronto","active":true,"usgs":false}],"preferred":false,"id":928255,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Oeser, Martin","contributorId":351235,"corporation":false,"usgs":false,"family":"Oeser","given":"Martin","affiliations":[{"id":34332,"text":"Leibniz Universitat Hannover","active":true,"usgs":false}],"preferred":false,"id":928256,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lynn, Kendra J. 0000-0001-7886-4376","orcid":"https://orcid.org/0000-0001-7886-4376","contributorId":290327,"corporation":false,"usgs":true,"family":"Lynn","given":"Kendra","email":"","middleInitial":"J.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":928257,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bennett, Neil","contributorId":351236,"corporation":false,"usgs":false,"family":"Bennett","given":"Neil","affiliations":[{"id":7044,"text":"University of Toronto","active":true,"usgs":false}],"preferred":false,"id":928258,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chu, Xu","contributorId":351237,"corporation":false,"usgs":false,"family":"Chu","given":"Xu","affiliations":[{"id":7044,"text":"University of Toronto","active":true,"usgs":false}],"preferred":false,"id":928259,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Henderson, Grace C. 0000-0001-9542-6888","orcid":"https://orcid.org/0000-0001-9542-6888","contributorId":328973,"corporation":false,"usgs":false,"family":"Henderson","given":"Grace","middleInitial":"C.","affiliations":[{"id":78543,"text":"Student contractor to the USGS","active":true,"usgs":false}],"preferred":false,"id":928260,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Liu, Y.","contributorId":127400,"corporation":false,"usgs":false,"family":"Liu","given":"Y.","email":"","affiliations":[{"id":6940,"text":"State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China","active":true,"usgs":false}],"preferred":false,"id":928261,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Weyer, Stephan","contributorId":351241,"corporation":false,"usgs":false,"family":"Weyer","given":"Stephan","affiliations":[{"id":34332,"text":"Leibniz Universitat Hannover","active":true,"usgs":false}],"preferred":false,"id":928263,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Sio, Corliss Kin I","contributorId":351242,"corporation":false,"usgs":false,"family":"Sio","given":"Corliss Kin I","affiliations":[{"id":7044,"text":"University of Toronto","active":true,"usgs":false}],"preferred":false,"id":928264,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70263506,"text":"70263506 - 2025 - Note to banders, February 2025","interactions":[],"lastModifiedDate":"2025-02-13T15:52:12.588283","indexId":"70263506","displayToPublicDate":"2025-02-12T09:51:21","publicationYear":"2025","noYear":false,"publicationType":{"id":25,"text":"Newsletter"},"publicationSubtype":{"id":30,"text":"Newsletter"},"seriesTitle":{"id":13451,"text":"Memo to All Banders (MTAB)","active":true,"publicationSubtype":{"id":30}},"title":"Note to banders, February 2025","docAbstract":"Note to All Banders was a special extra communication with more urgent information relevant to banders. This Note to All Banders was sent to U.S. bird banders on February 12, 2025. This note includes a review of the 2024 successes at the Bird Banding Laboratory. Throughout 2024, the BBL increased communication, engagement, and collaboration, within the Eastern Ecological Science Center, U.S. Geological Survey, and with organization partners and local communities. This Note to Banders highlights these efforts in more detail. ","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Celis-Murillo, A., 2025, Note to banders, February 2025: Memo to All Banders (MTAB), 4 p.","productDescription":"4 p.","ipdsId":"IP-175137","costCenters":[{"id":50464,"text":"Eastern Ecological Science Center","active":true,"usgs":true}],"links":[{"id":482030,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":482007,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.usgs.gov/media/files/note-banders-february-2025"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Celis-Murillo, Antonio 0000-0002-3371-6529","orcid":"https://orcid.org/0000-0002-3371-6529","contributorId":237851,"corporation":false,"usgs":true,"family":"Celis-Murillo","given":"Antonio","email":"","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":927211,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70269042,"text":"70269042 - 2025 - Accounting for non-random samples with distance sampling to estimate population density","interactions":[],"lastModifiedDate":"2025-07-15T14:30:48.364427","indexId":"70269042","displayToPublicDate":"2025-02-12T09:28:01","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2163,"text":"Journal of Applied Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Accounting for non-random samples with distance sampling to estimate population density","docAbstract":"Fishing gear entanglements can compromise health and lower survival and reproductive output of wildlife, which can slow population growth or cause population declines. However, entanglements may go unobserved, making it difficult to quantify their effects on individuals' vital rates and a population's trajectory. Fishing gear entanglements are a leading cause of death for North Atlantic right whales, Eubalaena glacialis, an endangered species whose population has declined substantially over the last decade. Key sources of observation error have not been addressed when quantifying the effects of entanglement on this species. We formulated a hidden Markov model that integrated 28 years of photo identification records, visual health assessments, entanglement assessments, and hormone assays to estimate body condition dynamics, and entanglement, survival, and reproductive rates of female North Atlantic right whales. The model also accounted for observation errors, including entanglements and reproductive events that were unobserved. Whales entangled in fishing gear were drastically more likely to experience declines in body condition and had lower survival rates than whales that were not entangled. Additionally, only whales in good body condition became pregnant. Between 1994 and 2021 entanglements reduced the expected number of calves born by 12.9% (95% credible interval: 8.2%–19.6%) and the expected number of females alive at the end of 2021 by 18.5% (95% credible interval: 8.6%–29.4%). Fishing gear entanglements have reduced the North Atlantic right whale population's capacity to recover and have increased the importance of the health and survival of the remaining living whales. Therefore, reducing the risk of fishing gear entanglements is likely necessary for the population to recover.
","language":"English","publisher":"Zoological Society of London","doi":"10.1111/acv.13016","usgsCitation":"Crum, N.J., Gowan, T., Hostetler, J.A., Schick, R., Knowlton, A., Pettis, H., Hamilton, P., and Rolland, R., 2025, Unobserved individual and population level impacts of fishing gear entanglements on North Atlantic right whales: Animal Conservation, https://doi.org/10.1111/acv.13016.","ipdsId":"IP-151853","costCenters":[{"id":50464,"text":"Eastern Ecological Science Center","active":true,"usgs":true}],"links":[{"id":487726,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/acv.13016","text":"Publisher Index Page"},{"id":483051,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"edition":"Online First","noUsgsAuthors":false,"publicationDate":"2025-02-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Crum, Nathan J.","contributorId":200016,"corporation":false,"usgs":false,"family":"Crum","given":"Nathan","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":929958,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gowan, Timothy A.","contributorId":335405,"corporation":false,"usgs":false,"family":"Gowan","given":"Timothy A.","affiliations":[{"id":12556,"text":"Florida Fish and Wildlife Conservation Commission","active":true,"usgs":false}],"preferred":false,"id":929959,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hostetler, J. A. 0000-0003-3669-1758","orcid":"https://orcid.org/0000-0003-3669-1758","contributorId":11319,"corporation":false,"usgs":true,"family":"Hostetler","given":"J.","middleInitial":"A.","affiliations":[],"preferred":true,"id":929960,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schick, Robert S.","contributorId":352043,"corporation":false,"usgs":false,"family":"Schick","given":"Robert S.","affiliations":[{"id":12643,"text":"Duke University","active":true,"usgs":false}],"preferred":false,"id":929961,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Knowlton, Amy R.","contributorId":352046,"corporation":false,"usgs":false,"family":"Knowlton","given":"Amy R.","affiliations":[{"id":37373,"text":"New England Aquarium","active":true,"usgs":false}],"preferred":false,"id":929962,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Pettis, Heather M.","contributorId":352049,"corporation":false,"usgs":false,"family":"Pettis","given":"Heather M.","affiliations":[{"id":37373,"text":"New England Aquarium","active":true,"usgs":false}],"preferred":false,"id":929963,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hamilton, Philip K.","contributorId":352052,"corporation":false,"usgs":false,"family":"Hamilton","given":"Philip K.","affiliations":[{"id":37373,"text":"New England Aquarium","active":true,"usgs":false}],"preferred":false,"id":929964,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Rolland, Rosalind M.","contributorId":352055,"corporation":false,"usgs":false,"family":"Rolland","given":"Rosalind M.","affiliations":[{"id":37373,"text":"New England Aquarium","active":true,"usgs":false}],"preferred":false,"id":929965,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70264730,"text":"70264730 - 2025 - An unexplained tsunami: Was there megathrust slip during the 2020 Mw7.6 Sand Point, Alaska, earthquake?","interactions":[],"lastModifiedDate":"2025-03-21T15:08:55.785308","indexId":"70264730","displayToPublicDate":"2025-02-12T07:59:39","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":17454,"text":"Seismica","active":true,"publicationSubtype":{"id":10}},"title":"An unexplained tsunami: Was there megathrust slip during the 2020 Mw7.6 Sand Point, Alaska, earthquake?","docAbstract":"On October 19, 2020, the Mw7.6 Sand Point earthquake struck south of the Shumagin Islands in Alaska. Moment tensors indicate the earthquake was primarily strike-slip, yet the event produced an enigmatic tsunami that was larger and more widespread than expected for an earthquake of that magnitude and mechanism. Using a suite of hydrodynamic, seismic, and geodetic modeling techniques, we explore plausible causes of the tsunami. We find that strike-slip models consistent with the moment tensor orientation cannot produce the observed tsunami. Hydrodynamic inversion of sea surface deformation from deep ocean and tide gauge data suggest seafloor deformation more closely matches a megathrust, rather than a strike-slip, source. Static slip inversions, using sea level and Global Navigation Satellite System data, allow for a portion of co-seismic megathrust slip that can explain tsunamigenesis. Combining all available geophysical datasets to model the kinematic rupture, we show that considerable, relatively slow, megathrust slip is allowable in the Shumagin segment, concurrent with strike-slip faulting. We hypothesize that the slow megathrust rupture does not contribute much seismic radiation allowing it to previously go unnoticed with traditional seismic monitoring.
","language":"English","publisher":"McGill","doi":"10.26443/seismica.v4i1.1336","usgsCitation":"Santellanes, S., Goldberg, D.E., Koch, P., Melgar, D., Yeck, W.L., Crowell, B.W., and Lin, J., 2025, An unexplained tsunami: Was there megathrust slip during the 2020 Mw7.6 Sand Point, Alaska, earthquake?: Seismica, v. 4, no. 1, p. 1-13, https://doi.org/10.26443/seismica.v4i1.1336.","productDescription":"13 p.","startPage":"1","endPage":"13","ipdsId":"IP-156090","costCenters":[{"id":78686,"text":"Geologic Hazards Science Center - Seismology / Geomagnetism","active":true,"usgs":true}],"links":[{"id":488362,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.26443/seismica.v4i1.1336","text":"Publisher Index Page"},{"id":483661,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Sand Point","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -160.8287429707048,\n 55.46546760592042\n ],\n [\n -160.8287429707048,\n 55.238590952487215\n ],\n [\n -160.19346063892195,\n 55.238590952487215\n ],\n [\n -160.19346063892195,\n 55.46546760592042\n ],\n [\n -160.8287429707048,\n 55.46546760592042\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"4","issue":"1","noUsgsAuthors":false,"publicationDate":"2025-02-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Santellanes, Sean R. 0000-0003-4181-437X","orcid":"https://orcid.org/0000-0003-4181-437X","contributorId":347848,"corporation":false,"usgs":false,"family":"Santellanes","given":"Sean R.","affiliations":[{"id":6604,"text":"University of Oregon","active":true,"usgs":false}],"preferred":false,"id":931475,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goldberg, Dara Elyse 0000-0002-0923-3180","orcid":"https://orcid.org/0000-0002-0923-3180","contributorId":289891,"corporation":false,"usgs":true,"family":"Goldberg","given":"Dara","email":"","middleInitial":"Elyse","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":931476,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koch, Pablo","contributorId":294680,"corporation":false,"usgs":false,"family":"Koch","given":"Pablo","email":"","affiliations":[{"id":63624,"text":"National Seismological Center, University of Chile","active":true,"usgs":false}],"preferred":false,"id":931477,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Melgar, Diego","contributorId":341315,"corporation":false,"usgs":false,"family":"Melgar","given":"Diego","affiliations":[{"id":6604,"text":"University of Oregon","active":true,"usgs":false}],"preferred":false,"id":931478,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yeck, William L. 0000-0002-2801-8873 wyeck@usgs.gov","orcid":"https://orcid.org/0000-0002-2801-8873","contributorId":147558,"corporation":false,"usgs":true,"family":"Yeck","given":"William","email":"wyeck@usgs.gov","middleInitial":"L.","affiliations":[{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true},{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":931479,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Crowell, Brendan W.","contributorId":184207,"corporation":false,"usgs":false,"family":"Crowell","given":"Brendan","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":931480,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lin, Jiun-Ting 0000-0002-8134-9612","orcid":"https://orcid.org/0000-0002-8134-9612","contributorId":347849,"corporation":false,"usgs":false,"family":"Lin","given":"Jiun-Ting","affiliations":[{"id":13621,"text":"Lawrence Livermore National Laboratory","active":true,"usgs":false}],"preferred":false,"id":931481,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70263581,"text":"70263581 - 2025 - Characterizing sedimentary organic carbon in a hydrothermal spreading center, the Escanaba Trough","interactions":[],"lastModifiedDate":"2025-02-14T15:03:36.006981","indexId":"70263581","displayToPublicDate":"2025-02-12T07:53:08","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Characterizing sedimentary organic carbon in a hydrothermal spreading center, the Escanaba Trough","docAbstract":"Sediments in critical marine mineral environments are of wide importance due to their preservation of both marine minerals and organic carbon (OC) stocks. However, OC storage and cycling is often overlooked in mineral system studies. This work characterizes sedimentary OC within the Escanaba Trough, a hydrothermal sulfide system off the coast of northern California. By utilizing ROV-based push coring, we collected sediments near and far from high temperature, low temperature, and inactive vents. We applied a multipronged organic geochemical approach, measuring bulk sediment, OC fractions of varying labilities, and biomarkers to tease apart the storage, source, and cycling of OC within this complex system. In contrast to past work indicating a primarily terrestrial source to deeper, Pleistocene sediments, our results suggest a primarily marine source in surface sediments at least 50 m away from active venting. Near active venting, we see evidence of locally produced chemosynthetic OC in addition to the background marine source. This chemosynthetic OC appears to be rapidly remineralized and supports more complex deep-sea food webs compared to hemipelagic sites. Still, the greatest contribution of labile OC was observed at inactive vent sites, which we suggest is due to hydrothermal fluid alteration of more labile OC at actively venting sites. Depending on fluid temperature, hydrothermally altered OC is either preserved in the sediments as petroleum or migrated with fluid flow. Considering inactive sites are those most likely to be targeted by potential mining, we suggest additional studies could verify if these results apply at other sedimented seafloor massive sulfide systems.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.chemgeo.2025.122679","usgsCitation":"Ianiri, H., Campbell‐Swarzenski, P., Gartman, A., and Prouty, N.G., 2025, Characterizing sedimentary organic carbon in a hydrothermal spreading center, the Escanaba Trough: Chemical Geology, 122679, 60 p., https://doi.org/10.1016/j.chemgeo.2025.122679.","productDescription":"122679, 60 p.","ipdsId":"IP-168413","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":488035,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.chemgeo.2025.122679","text":"Publisher Index Page"},{"id":482099,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Escanaba Trough, northern California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -126.72381872698759,\n 41.772325453523365\n ],\n [\n -126.72381872698759,\n 40.268162133594274\n ],\n [\n -123.95340029935534,\n 40.268162133594274\n ],\n [\n -123.95340029935534,\n 41.772325453523365\n ],\n [\n -126.72381872698759,\n 41.772325453523365\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","edition":"Online First","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ianiri, Hope Lee","contributorId":350947,"corporation":false,"usgs":true,"family":"Ianiri","given":"Hope Lee","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":927423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campbell‐Swarzenski, Pamela L. 0000-0002-2232-6381","orcid":"https://orcid.org/0000-0002-2232-6381","contributorId":210642,"corporation":false,"usgs":true,"family":"Campbell‐Swarzenski","given":"Pamela L.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":927424,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gartman, Amy 0000-0001-9307-3062 agartman@usgs.gov","orcid":"https://orcid.org/0000-0001-9307-3062","contributorId":177057,"corporation":false,"usgs":true,"family":"Gartman","given":"Amy","email":"agartman@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":927425,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Prouty, Nancy G. 0000-0002-8922-0688 nprouty@usgs.gov","orcid":"https://orcid.org/0000-0002-8922-0688","contributorId":3350,"corporation":false,"usgs":true,"family":"Prouty","given":"Nancy","email":"nprouty@usgs.gov","middleInitial":"G.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":927426,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70263934,"text":"70263934 - 2025 - Crater detection dependence on resolution, incidence angle, emission angle, and phase angle","interactions":[],"lastModifiedDate":"2025-03-03T14:45:24.410812","indexId":"70263934","displayToPublicDate":"2025-02-12T07:41:14","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Crater detection dependence on resolution, incidence angle, emission angle, and phase angle","docAbstract":"Impact crater population detection and measurement is critical to understanding solar system bodies and dynamics. However, the ability to detect all possible craters under different lighting and camera geometries has not been systematically studied except in a few limited cases. This work presents the first systematic study examining crater detection based on resolution, incidence angle, emission angle, and phase angle, by three independent researchers to also test reliability of our conclusions. We found the best incidence angles for crater detection to be ∼74°–82°. We found little dependence on emission angle with geometries as high as ∼60°, while phase angles ∼20°–75° produce reliable crater populations. Resolution requires at least 6 pixels, and it is likely researcher-, geometry-, and terrain-specific. This work reveals potential biases in crater analysts' work and can be used for missions planning encounters so they can achieve the best, most reliable recovery of crater populations.","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2024GL110570","usgsCitation":"Robbins, S., Kirchoff, M., and Ostrach, L.R., 2025, Crater detection dependence on resolution, incidence angle, emission angle, and phase angle: Geophysical Research Letters, v. 52, no. 4, e2024GL110570, 7 p., https://doi.org/10.1029/2024GL110570.","productDescription":"e2024GL110570, 7 p.","ipdsId":"IP-167872","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":487715,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2024gl110570","text":"Publisher Index Page"},{"id":482729,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"4","noUsgsAuthors":false,"publicationDate":"2025-02-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Robbins, Stuart J.","contributorId":351637,"corporation":false,"usgs":false,"family":"Robbins","given":"Stuart J.","affiliations":[{"id":41659,"text":"SWRI","active":true,"usgs":false}],"preferred":false,"id":929181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirchoff, Michelle R.","contributorId":351638,"corporation":false,"usgs":false,"family":"Kirchoff","given":"Michelle R.","affiliations":[{"id":41659,"text":"SWRI","active":true,"usgs":false}],"preferred":false,"id":929182,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ostrach, Lillian R. 0000-0002-3107-7321 lostrach@usgs.gov","orcid":"https://orcid.org/0000-0002-3107-7321","contributorId":193078,"corporation":false,"usgs":true,"family":"Ostrach","given":"Lillian","email":"lostrach@usgs.gov","middleInitial":"R.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":929183,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70266780,"text":"70266780 - 2025 - Terrebonne Basin, Gulf of Mexico gas hydrate resource evaluation and 3-D modeling of basin-scale sedimentation, salt tectonics, and hydrate system evolution since the early Miocene","interactions":[],"lastModifiedDate":"2025-05-13T16:16:28.57162","indexId":"70266780","displayToPublicDate":"2025-02-11T11:10:50","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"Terrebonne Basin, Gulf of Mexico gas hydrate resource evaluation and 3-D modeling of basin-scale sedimentation, salt tectonics, and hydrate system evolution since the early Miocene","docAbstract":"In assessing methane hydrate as a potential transitional energy source, quantification of in-place volumes of gas is a first step—and yet, global, regional, and even local estimates of gas volumes contained within hydrate are highly variable, including within the extensively-studied Gulf of Mexico (GoM) gas hydrate province. Here, we construct the first 3-D basin and hydrocarbon system model of the Terrebonne Basin (Walker Ridge protraction area, northern GoM) to estimate in-place resources contained as gas within hydrate, as well as to provide the first estimate of in-place resources contained within free gas accumulations in the basin. The resultant model-predicted 3-D distributions (and saturations) of hydrate are consistent with independent seismic interpretation and borehole observations. This study reveals both sedimentation-driven and salt diapir-driven gas hydrate recycling produce elevated hydrate saturations in the basin (“recycling” occurs when relative upward shifts of the gas hydrate stability zone (GHSZ) cause hydrate dissociation, generating buoyant free gas that may reaccumulate as higher-saturation hydrate at the new base of GHSZ). An important finding of this study (particularly given that, globally, the source of methane in marine hydrate systems tends to be poorly understood) is that microbial sources can explain most or all hydrate occurrences in Terrebonne Basin. We calculate that ∼32 × 109 m3 (∼1.1 1012 ft3) of methane gas is trapped within hydrate accumulations throughout Terrebonne Basin, while nearly 2 × 109 m3 (∼67 × 109 ft3) of methane occurs as free gas at high saturations within sandy reservoirs beneath the GHSZ and ∼35 × 109 m3 (∼1.2 × 1012 ft3) occurs as free gas at low saturations within muddy units beneath the GHSZ. In total, our calibrated 3-D model predicts that nearly 70 × 109 m3 (∼2.5 × 1012 ft3) of microbial methane is trapped as gas hydrate and free gas in the Terrebonne Basin.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marpetgeo.2025.107330","usgsCitation":"Dafov, L., Burton, Z.F., Haines, S.S., Hosford Scheirer, A., Masurek, N., Boswell, R., Frye, M., Seol, Y., and Graham, S., 2025, Terrebonne Basin, Gulf of Mexico gas hydrate resource evaluation and 3-D modeling of basin-scale sedimentation, salt tectonics, and hydrate system evolution since the early Miocene: Marine and Petroleum Geology, v. 176, 107330, 18 p., https://doi.org/10.1016/j.marpetgeo.2025.107330.","productDescription":"107330, 18 p.","ipdsId":"IP-167026","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":488201,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.marpetgeo.2025.107330","text":"Publisher Index Page"},{"id":485832,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"176","noUsgsAuthors":false,"publicationDate":"2025-02-11","publicationStatus":"PW","contributors":{"authors":[{"text":"Dafov, Laura","contributorId":354989,"corporation":false,"usgs":false,"family":"Dafov","given":"Laura","affiliations":[{"id":6986,"text":"Stanford University","active":true,"usgs":false}],"preferred":false,"id":936752,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burton, Zachary FM","contributorId":302277,"corporation":false,"usgs":false,"family":"Burton","given":"Zachary","email":"","middleInitial":"FM","affiliations":[{"id":6986,"text":"Stanford University","active":true,"usgs":false}],"preferred":false,"id":936753,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haines, Seth S. 0000-0003-2611-8165 shaines@usgs.gov","orcid":"https://orcid.org/0000-0003-2611-8165","contributorId":1344,"corporation":false,"usgs":true,"family":"Haines","given":"Seth","email":"shaines@usgs.gov","middleInitial":"S.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true},{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":936754,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hosford Scheirer, Allegra","contributorId":67995,"corporation":false,"usgs":true,"family":"Hosford Scheirer","given":"Allegra","affiliations":[],"preferred":false,"id":936755,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Masurek, Nicole","contributorId":354998,"corporation":false,"usgs":false,"family":"Masurek","given":"Nicole","affiliations":[{"id":84692,"text":"Schlumberger Center of Excellence for Petroleum Systems Modeling","active":true,"usgs":false}],"preferred":false,"id":936756,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Boswell, Ray","contributorId":354999,"corporation":false,"usgs":false,"family":"Boswell","given":"Ray","affiliations":[{"id":84695,"text":"US DOE","active":true,"usgs":false}],"preferred":false,"id":936757,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Frye, Matthew","contributorId":197799,"corporation":false,"usgs":false,"family":"Frye","given":"Matthew","email":"","affiliations":[],"preferred":false,"id":936758,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Seol, Yongkoo","contributorId":195139,"corporation":false,"usgs":false,"family":"Seol","given":"Yongkoo","email":"","affiliations":[],"preferred":false,"id":936759,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Graham, Stephan A.","contributorId":293143,"corporation":false,"usgs":false,"family":"Graham","given":"Stephan A.","affiliations":[{"id":63235,"text":"Stanford Univeristy","active":true,"usgs":false}],"preferred":false,"id":936760,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ]}