Permeability measurement and prediction with nuclear magnetic resonance analysis of gas hydrate-bearing sediments recovered from Alaska North Slope 2018 Hydrate-01 Stratigraphic Test Well
Jun Yoneda, Kiyofumi Suzuki, Yusuke Jin, Satoshi Ohtsuki, Timothy S. Collett, Ray Boswell, Yuki Maehara, Norihiro Okinaka
2022, Energy and Fuels Journal (36) 2515-2529
Permeability of porous media, such as oil and gas reservoirs, is the crucial material parameter for predicting their hydraulic behavior. A nuclear magnetic resonance (NMR) analyzer is widely used as a powerful tool to predict permeability of various media. NMR T2 (transverse or spin–spin) relaxation time distribution, which...
Validating predicted site response in sedimentary basins from 3D ground motion simulations
Chukwuebuka C Nweke, Jonathan P. Stewart, Robert Graves, Christine A. Goulet, Scott J Brandenberg
2022, Earthquake Spectra (38) 2135-2161
We introduce procedures to validate site response in sedimentary basins as predicted using ground motion simulations. These procedures aim to isolate contributions of site response to computed intensity measures relative to those from seismic source and path effects. In one of the validation procedures, simulated motions are...
Characterizing unrest: A retrospective look at 20 years of gas emissions and seismicity at Iliamna Volcano, Alaska
Cynthia Werner, John Power, Peter J. Kelly, Stephanie Prejean, Christoph Kern
2022, Journal of Volcanology and Geothermal Research (422)
Episodes of unrest are not as well documented as eruptions at most volcanoes globally. Iliamna is an andesitic stratovolcano in the Cook Inlet of Alaska that has experienced several episodes of unrest. Unrest in 1996 was previously studied. Here we present data...
Exploring genetic variation and population structure in a threatened species, Noturus placidus, with whole-genome sequence data
Lynsey K. Whitacre, Mark L. Wildhaber, Gary S. Johnson, Harly J. Durbin, Troy N. Rowan, Peoria Tribe, Robert D. Schnabel, Tendai Mhlanga-Mutangadura, Vernon M. Tabor, Daniel Fenner, Jared E. Decker
2022, G3: Genes, Genomes, Genetics (12)
The Neosho madtom (Noturus placidus) is a small catfish, generally less than 3 inches in length, unique to the Neosho-Spring River system within the Arkansas River Basin. It was federally listed as threatened in 1990, largely due to habitat loss. For conservation efforts, we generated whole-genome sequence data from...
Kelp-forest dynamics controlled by substrate complexity
Zachary Randell, Michael C. Kenner, Joseph A. Tomoleoni, Julie L. Yee, Mark Novak
2022, PNAS (119)
The factors that determine why ecosystems exhibit abrupt shifts in state are of paramount importance for management, conservation, and restoration efforts. Kelp forests are emblematic of such abruptly shifting ecosystems, transitioning from kelp-dominated to urchin-dominated states around the world with increasing frequency, yet the underlying processes...
Classifying behavior from short-interval biologging data: An example with GPS tracking of birds
Silas Bergen, Manuela Huso, A. Duerr, Missy A Braham, Todd E. Katzner, Sara Schmuecker, Tricia A. Miller
2022, Ecology and Evolution (12)
Recent advances in digital data collection have spurred accumulation of immense quantities of data that have potential to lead to remarkable ecological insight, but that also present analytic challenges. In the case of biologging data from birds, common analytical approaches to classifying movement behaviors are largely inappropriate for these...
Analyzing the effects of land cover change on the water balance for case study watersheds in different forested ecosystems in the USA
Nathan C. Healey, Jennifer Rover
2022, Land (11)
We analyzed impacts of interannual disturbance on the water balance of watersheds in different forested ecosystem case studies across the United States from 1985 to 2016 using a remotely sensed long-term land cover monitoring record (U.S. Geological Survey Land Change Monitoring, Assessment, and Projection (LCMAP) Collection 1.0 Science products), gridded...
Rainfall triggering of post-fire debris flows over a 28-year period near El Portal, California, USA
Jerome V. De Graff, Dennis M. Staley, Greg M. Stock, Kellen Takenaka, Alan L. Gallegos, Chad K. Neptune
2022, Environmental and Engineering Geoscience (28) 133-145
Wildfires frequently affect the steep hillslopes near El Portal, California (United States), a small community established during the California Gold Rush in the mid-1800s. In addition to the historical significance of El Portal, State Route 140 (SR 140) is a major transportation and economic corridor connecting the San Joaquin Valley...
Rockfall kinematics from massive rock cliffs: Outlier boulders and flyrock from Whitney Portal, California, rockfalls
Brian D. Collins, Skye C. Corbett, Elizabeth Jean Horton, Alan J. Gallegos
2022, Environmental and Engineering Geoscience (28) 3-24
Geologic conditions and topographic setting are among the most critical factors for assessing rockfall hazards. However, other subtle features of rockfall motion may also govern the runout of rockfall debris, particularly for those sourced from massive cliffs where debris can have substantial momentum during transport. Rocks may undergo collisions with...
Unravelling a 2300 year long sedimentary record of megathrust and intraslab earthquakes in proglacial Skilak Lake, south-central Alaska
Nore Praet, Maarten Van Daele, Jasper Moernaut, Thomas Mestdagh, Thomas Vandorpe, Britta J.L. Jensen, Robert C. Witter, Peter J. Haeussler, Marc De Batist
2022, Sedimentology (69) 2151-2180
Seismic hazards in subduction settings typically arise from megathrust, intraslab and crustal earthquake sources. Despite the frequent occurrence of intraslab earthquakes in subduction zones and their potential threat to communities, their long-term recurrence behaviour is barely studied. Sedimentary sequences in lakes may register ground shaking from different seismic sources. This...
Detrital zircon provenance of the Cretaceous-Neogene East Coast Basin reveals changing tectonic conditions and drainage reorganization along the Pacific margin of Zealandia
Jared T. Gooley, Nora Maria Nieminski
2022, Geosphere (18) 616-646
The Upper Cretaceous–Pliocene strata of New Zealand record ~100 m.y. of Zealandia’s evolution, including development of the Hikurangi convergent margin and Alpine transform plate boundary. A comprehensive, new detrital zircon U-Pb data set (8315 analyses from 61 samples) was generated along a ~700 km transect of the East Coast Basin...
Hypotheses and lessons from a native moth outbreak in a low-diversity, tropical rainforest
Paul C. Banko, Robert W. Peck, Stephanie G. Yelenik, Eben H. Paxton, Frank Bonaccorso, Kristina Montoya-Aiona, R. Flint Hughes, Steven Perakis
Uffe Nielsen, editor(s)
2022, Ecosphere (13) 1-41
Outbreaks of defoliating insects in low-diversity tropical forests occur infrequently but provide valuable insights about outbreak ecology in temperate environments and in general. We investigated an extensive outbreak of the endemic koa moth (Scotorythra paludicola), which defoliated endemic koa trees (Acacia koa) over a third of their range on Hawai‘i...
DSWEmod - The production of high-frequency surface water map composites from daily MODIS images
Christopher E. Soulard, Eric Waller, Jessica J. Walker, Roy Petrakis, Britt Windsor Smith
2022, Journal of the American Water Resources Association (58) 248-268
Optical satellite imagery is commonly used for monitoring surface water dynamics, but clouds and cloud shadows present challenges in assembling complete water time series. To test whether the daily revisit rate of Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery can reduce cloud obstruction and improve high-frequency...
Multi-species, multi-country analysis reveals North Americans are willing to pay for transborder migratory species conservation
Wayne E. Thogmartin, Michelle A. Haefele, James E. Diffendorfer, Darius J. Semmens, Jonathan J. Derbridge, Aaron M. Lien, Ta-Ken Huang, Laura Lopez-Hoffman
2022, People and Nature (4) 549-562
Migratory species often provide ecosystem service benefits to people in one country while receiving habitat support in other countries. The multinational cooperation that could help ensure continued provisioning of these benefits by migration may be informed by understanding the economic values people in different countries place on the benefits...
Increased juvenile native fish abundance following a major flood in an Arizona river
Christopher J. Jenney, Zach C. Nemec, Larissa N. Lee, Scott A. Bonar
2022, Journal of Freshwater Ecology (37) 1-14
Spring floods trigger spawning in many native fishes of the desert Southwest (USA), but less is known about fish community response when native fishes are rare. Here, we document change to native and nonnative fish captures and instream habitat features following a decade-high flooding event (2019) in the Verde River...
Occurrence and sources of lead in private wells, Sturbridge, Massachusetts
Leah M. Santangelo, Craig J. Brown, James B. Shanley, Michael Pribil, Danny Rutherford
2022, Applied Geochemistry (139)
Lead (Pb) occurrence and sources and aqueous geochemistry were assessed in private wellhead and tap water at a targeted area of concern for possible exceedances and at a control area in the same geologic formation, and in wells at a nearby landfill in south-central...
You can go your own way: No evidence for social behavior based on kinship or familiarity in captive juvenile box turtles
Sasha J. Tetzlaff, Jinelle H. Sperry, Brett Alexander DeGregorio
2022, Applied Animal Behaviour Science (248)
Behavioral interactions between conspecific animals can be influenced by relatedness and familiarity. Compared to other vertebrate taxa, considering such aspects of social behavior when housing captive reptiles has received less attention, despite the implications this could have for informing husbandry practices, enhancing welfare, and influencing outcomes of conservation translocations. In...
Climate change and fishes in estuaries
Bronwyn M Gillanders, Matthew N. McMillan, P. Reis-Santos, Lee J. Baumgartner, Larry R. Brown, John Conallin, Frederick V. Feyrer, Sofia Henriques, Nicola C. James, Andres J Jaureguizar, Andre L. M. Pessanha, Rita P. Vasconcelos, An V. Vu, Benjamin Walther, Arif Wibowo
2022, Book chapter, Fish and fisheries in estuaries: A global perspective
This chapter provides an overview of the main drivers of change in estuarine systems, their expected causes and impacts on estuarine fish and fisheries. An analysis of global, regional and local patterns of estuarine fish and how climate-induced change may impact estuarine systems and their fish communities is provided. We...
South Carolina and Landsat
U.S. Geological Survey
2022, Fact Sheet 2022-3005
South Carolina, the eighth State admitted to the union, transcends its size with its deep, rich history; striking beauty; vast natural resources; and extensive cultural diversity. Home to part of the Blue Ridge Mountains of the Central Appalachians, the Upstate is graced with more than 100 waterfalls, while the Lowcountry...
Peak-flow and low-flow magnitude estimates at defined frequencies and durations for nontidal streams in Delaware
John C. Hammond, Edward J. Doheny, Jonathan J.A. Dillow, Mark R. Nardi, Peter A. Steeves, Daniel L. Warner
2022, Scientific Investigations Report 2022-5005
Reliable estimates of the magnitude of peak flows in streams are required for the economical and safe design of transportation and water conveyance structures. In addition, reliable estimates of the magnitude of low flows at defined frequencies and durations are needed for meeting regulatory requirements, quantifying base flows in streams...
Joint-species analysis reveals potential displacement of native fishes by non-native fishes within the Santa Ana River, California
Brock Huntsman, Larry R. Brown, Kai Palenscar, Chris Jones, Kerwin Russell, Heather Dyer, Brett Mills, Marissa L. Wulff, Jason May
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 1389-1406
Accurate estimates of abundance are a cornerstone for resource managers to make effective decisions for fish conservation. However, multiple sampling methods often are required to sample fish communities, and ignoring the detection process can create substantial bias in latent state parameter estimation (e.g., abundance, survival). We developed a joint-species N-mixture model...
Geologic and geomorphic evidence for multi-phase history of strands of the San Andreas fault through the San Gorgonio Pass structural knot, southern California
Katherine J. Kendrick, Jonathan C. Matti, Nicholas C Barth
2022, Geosphere (18) 424-457
The San Gorgonio Pass region of southern California is a locus of extensive Quaternary deformation within a multi-strand section of the San Andreas fault zone. The geomorphology of the San Gorgonio Pass region reflects the complicated history of geologic events in the formation of this structurally complex region. We define...
Partitioning ground motion uncertainty when conditioned on station data
Davis T. Engler, Charles Worden, Eric M. Thompson, Kishor S. Jaiswal
2022, Bulletin of the Seismological Society of America (112) 1060-1079
Rapid estimation of earthquake ground shaking and proper accounting of associated uncertainties in such estimates when conditioned on strong‐motion station data or macroseismic intensity observations are crucial for downstream applications such as ground failure and loss estimation. The U.S. Geological Survey ShakeMap system is called upon to fulfill this objective...
Demographic implications of lead poisoning for eagles across North America
Vincent A. Slabe, James T. Anderson, Brian A. Millsap, Jeffrey L. Cooper, Alan R. Harmata, Marco Restani, Ross H. Crandall, Barbara Bodenstein, Peter H. Bloom, Travis L. Booms, John Buchweitz, Renee C. E. Culver, Kim Dickerson, Robert Domenech, Ernesto Dominguez-Villegas, Daniel Driscoll, Brian W. Smith, Michael J. Lockhart, David McRuer, Tricia A. Miller, Patricia Ortiz, Krysta Rogers, Matt Schwarz, Natalie Turley, Brian Woodbridge, Myra E. Finkelstein, Christian A. Triana, Christopher R. DeSorbo, Todd E. Katzner
2022, Science (375) 779-782
Lead poisoning occurs worldwide in populations of predatory birds, but exposure rates and population impacts are known only from regional studies. We evaluated the lead exposure of 1210 bald and golden eagles from 38 US states across North America, including 620 live eagles. We detected unexpectedly high frequencies of lead...
Preliminary bedrock geologic map of the Blythe 30' x 60' quadrangle, California and Arizona
2022, Open-File Report 2021-1097
The Blythe 30' x 60' quadrangle in southeastern California and southwestern Arizona displays complex geology that includes Mesozoic contractional deformation, metamorphism, and magmatism in addition to Cenozoic extensional deformation and magmatism. Previous geologic map compilations predate recent geologic mapping efforts that have contributed new insights into the stratigraphy and structure...
