3-D Modeling of the Duluth Complex from geophysical data
Dana E. Peterson, Paul A. Bedrosian, Carol A. Finn
2021, Conference Paper, 67th Institute on Lake Superior Geology Proceedings
The Mesoproterozoic Duluth Complex in northeastern Minnesota is one of the major plutonic components of the Midcontinent Rift System and hosts a variety of copper-nickel sulfide and platinum-group element deposits. The Duluth Complex is composed of a series of individual mafic and felsic intrusions emplaced 1110-1098 Ma within Paleoproterozoic sedimentary...
Integration of geophysical evidence suggests that anorthosite composes a significant portion of Grand Marais ridge, an inferred basement high in western Lake Superior
V. J. Grauch, Samuel J. Heller
2021, Conference Paper, Institute on Lake Superior Geology: Proceedings 2021
The Midcontinent Rift System (MRS) is expressed geophysically by a semi-linear, regional gravity high that trends across the Midcontinent and Great Lakes region of North America. The gravity high is interrupted by two prominent, semi-circular gravity lows, which have been interpreted from modeling and seismic-reflection sections as basement highs of...
Field evaluation of an improved solid TFM formulation for use in treating small tributary streams
James A. Luoma, Nicholas Robertson, Justin R. Schueller, Nicholas Schloesser, Todd Johnson, Todd J. Severson, Matthew J Meulemans, Erica Muelemans
2021, Report
A solid lampricide formulation containing 23% 3-trifluoromethyl-4-nitrophenol (TFM) as the active ingredient was developed in the mid-1980s for use in small tributaries of dendritic streams during routine treatments to kill larval sea lamprey. This TFM bar formulation was designed to use a matrix of commercially prepared surfactants that would dissolve...
Alaska landbird montoring survey: Alaska regional protocol framework for monitoring landbirds using point counts
Colleen M. Handel, Steven M. Matsuoka, Melissa N. Cady, Diane A. Granfors
2021, Report
Alaska provides habitat for 143 species of landbirds that occur regularly in the state, about half of which breed predominantly north of the border between the contiguous United States and Canada. The road-based North American Breeding Bird Survey (BBS) provides some data on population trends in Alaska, but most northern...
Improving species status assessments under the U.S. Endangered Species Act and implications for multispecies conservation challenges worldwide
Reed Noss, Jennifer M. Cartwright, Dwayne Estes, Theo Witsell, Gregg Elliott, Daniel S. Adams, Matthew A. Albrecht, Ryan Boyles, Patrick Comer, Chris Doffitt, JoVonn G. Hill, William C. Hunter, Wesley M. Knapp, Mike Marshall, Jason R. Singhurst, Christopher Tracey, Jeffrey L. Walck, Alan Weakley
2021, Conservation Biology (35) 1715-1724
Despite its successes, the U.S. Endangered Species Act (ESA) has proven challenging to implement due to funding limitations, workload backlog, and other problems. As threats to species survival intensify and as more species come under threat, the need for the ESA and similar conservation laws and policies in other countries...
Quantification of manganese for ChemCam Mars and laboratory spectra using a multivariate model
Patrick J. Gasda, Ryan B. Anderson, A. Cousin, O. Forni, S. M. Clegg, A. Ollila, Nina L. Lanza, S Lamm, Roger C. Wiens, Sylvestre Maurice, Olivier Gasnault, R. Beal, A. Reyes-Newell, D. Delapp
2021, Spectrochimica Acta B (181)
We report a new calibration model for manganese using the laser-induced breakdown spectroscopy instrument that is part of the ChemCam instrument suite onboard the NASA Curiosity rover. The model has been trained using an expanded set of 523 manganese-bearing rock, mineral, metal ore, and synthetic standards. The...
Surface flow velocities from space: Particle image velocimetry of satellite video of a large, sediment-laden river
Carl J. Legleiter, Paul J. Kinzel
2021, Frontiers in Water (3)
Conventional, field-based streamflow monitoring in remote, inaccessible locations such as Alaska poses logistical challenges. Safety concerns, financial considerations, and a desire to expand water-observing networks make remote sensing an appealing alternative means of collecting hydrologic data. In an ongoing effort to develop non-contact methods for measuring river discharge, we evaluated...
Flood-inundation maps for the Blue River near Red Bridge Road, Kansas City, Missouri, 2019
David C. Heimann, Jonathon D. Voss, Paul H. Rydlund Jr.
2021, Scientific Investigations Report 2020-5057
Digital flood-inundation maps for a 4.6-mile reach of the Blue River near Red Bridge Road in Kansas City, Missouri, were created by the U.S. Geological Survey (USGS), in cooperation with the City of Kansas City, Missouri. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Program...
Characterization of historical and stochastically generated climate and streamflow conditions in the Souris River Basin, United States and Canada
Angela Gregory, Joel M. Galloway
2021, Scientific Investigations Report 2021-5044
The Souris River Basin is a 61,000-square-kilometer basin in the Provinces of Saskatchewan and Manitoba in Canada and the State of North Dakota in the United States. Greater than average snowpack during the winter of 2010–11, along with record-setting rains in May and June 2011, resulted in historically unprecedented flooding...
Dry formation of recent Martian slope features
Colin M. Dundas
2021, Book chapter, Mars Geological Enigmas From the Late Noachian Epoch to the Present Day
Martian surface conditions are cold and dry, unfavorable for liquid water, yet steep slopes display young and currently active features suggestive of wet processes. These include recurring slope lineae and slope streaks, gully landforms, and small lobate features. Wet origins for these...
Amplified impact of climate change on fine-sediment delivery to a subsiding coast, Humboldt Bay, California
Jennifer Curtis, Lorraine E. Flint, Michelle A. Stern, Jack Lewis, Randy D. Klein
2021, Estuaries and Coasts (44) 2173-2193
In Humboldt Bay, tectonic subsidence exacerbates sea-level rise (SLR). To build surface elevations and to keep pace with SLR, the sediment demand created by subsidence and SLR must be balanced by an adequate sediment supply. This study used an ensemble of plausible future scenarios to predict potential climate change impacts...
Use of the smeltCam as an efficient fish sampling alternative within the San Francisco Estuary
Brock Huntsman, Frederick V. Feyrer, Matthew J. Young
2021, San Francisco Estuary and Watershed Science (19)
Resource managers often rely on long-term monitoring surveys to detect trends in biological data. However, no survey gear is 100% efficient, and many sources of bias can be responsible for detecting or not detecting biological trends. The SmeltCam is an imaging apparatus developed as a potential sampling alternative to long-term...
Predicting light regime controls on primary productivity across CONUS river networks
Philip Savoy, Judson Harvey
2021, Geophysical Research Letters (48)
Solar radiation is a fundamental driver of ecosystem productivity, but widespread estimates of light available for primary producers in rivers are lacking. We developed a model to predict light available for river primary producers and used it to estimate river primary production across the contiguous United States...
Ten years of volcanic activity at Mt Etna: High-resolution mapping and accurate quantification of the morphological changes by Pleiades and Lidar data
Marina Bisson, Claudia Spinetti, Daniele Andronico, Monica Palaseanu-Lovejoy, Maria Fabrizia Buongiorno, Oleg Alexandrov, Thomas Cecere
2021, International Journal of Applied Earth Observations and Geoinformation (102)
The topography of Mt. Etna, Italy, is subjected to continuous modifications depending on intensity and magnitude of eruptions that frequently occur at the volcano summit and flanks. In order to make high-resolution maps of morphological changes and accurately calculate the overall volume of the erupted products (e.g., lava flows, tephra...
Improving short-term recruitment forecasts for coho salmon using a spatiotemporal integrated population model
Lukas B. DeFilippo, Thomas W. Buehrens, Mark David Scheuerell, Neala W. Kendall, Daniel E. Schindler
2021, Fisheries Research (242)
Fishery managers often rely on forecasts of future population abundance to set allowable harvest quotas or exploitation rates. While there has been substantial research devoted to identifying environmental factors that can predict recruitment for individual populations, such correlations often degrade over time, thereby limiting their utility for management. Conversely, examining...
Appendix C: Central sands lakes study technical report: Modeling documentation
Michael N. Fienen, Megan J. Haserodt, Andrew T. Leaf, Stephen, M. Westenbroek
2021, Report
This report provides the necessary documentation of the numerical models developed for the Central Sands Lake study in central Wisconsin and will be included as a technical appendix in the report to the Wisconsin State Legislature by the Wisconsin Department of Natural Resources (WDNR) in response to 2017 Wisconsin Act...
Assessing the uncertainties in climatic estimates based on vegetation assemblages: Examples from modern vegetation assemblages in the American Southwest
Robert S. Thompson, Katherine H Anderson, Richard T. Pelltier, Laura E. Strickland, Sarah Shafer, Patrick J. Bartlein
2021, Quaternary Science Reviews (262)
Assemblages of fossil plant remains have been widely used to reconstruct past climatic conditions, usually through the application of methods that involve either finding vegetation analogues on the modern landscape (and using the modern associated climatic values as the basis for an estimate) or using the modern climatic ranges...
Ten simple rules for productive lab meetings
Nigel Golden, Kadambari Devarajan, Cathleen Balantic, Joseph Drake, Michael T. Hallworth, Toni Lyn Morelli
Russell Schwartz, editor(s)
2021, PLOS Computational Biology (17)
The aim of this article is to delineate 10 simple rules on how to achieve productive lab meetings. We use the term “meeting” interchangeably to represent both the single meeting event and the overarching concept of the recurring meeting. In this article we speak from our experience, as a lab...
Transient disease dynamics across ecological scales
Yun Tao, Jessica L Hite, Kevin D. Lafferty, David J D Earn, Nita Bharti
2021, Theoretical Ecology (14) 625-640
Analyses of transient dynamics are critical to understanding infectious disease transmission and persistence. Identifying and predicting transients across scales, from within-host to community-level patterns, plays an important role in combating ongoing epidemics and mitigating the risk of future outbreaks. Moreover, greater emphases on non-asymptotic processes will...
Enhancing Great Lakes coastal ecosystems research by initiating engagement between scientists and decision-makers
Charlotte B. Weinstein, Laura Bourgeau-Chavez, S. L. Martin, W. S. Currie, K. Grantham, Q. F. Hamlin, David W Hyndman, Kurt P. Kowalski, J. P. Martina, D. Pearsall
2021, Journal of Great Lakes Research (47) 1235-1240
A disconnect between scientific research and environmental management communities can be a detriment to both. In the case of Great Lakes coastal ecosystems, which are inherently complex and subject to uncertain effects of future climatic, environmental, and anthropogenic drivers, greater collaboration could be beneficial to their sustainability. We capture the...
Impact of SST and surface waves on Hurricane Florence (2018): A coupled modeling investigation
Joseph Zambon, Ruoying He, John C. Warner, Christie Hegermiller
2021, Weather and Forecasting (36) 1713-1734
Hurricane Florence (2018) devastated the coastal communities of the Carolinas through heavy rainfall that resulted in massive flooding. Florence was characterized by an abrupt reduction in intensity (Saffir-Simpson Category 4 to Category 1) just prior...
N supply mediates the radiative balance of N2O emissions and CO2 sequestration driven by N-fixing vs. non-fixing trees
Sian Kou-Giesbrecht, Jennifer L. Funk, Steven S. Perakis, Amelia A. Wolf, Duncan Menge
2021, Ecology (102)
Forests are a significant CO2 sink. However, CO2 sequestration in forests is radiatively offset by emissions of nitrous oxide (N2O), a potent greenhouse gas, from forest soils. Reforestation, an important strategy for mitigating climate change, has focused on maximizing CO2 sequestration in plant biomass without integrating N2O emissions from soils. Although nitrogen (N)-fixing...
Satellite remote sensing to assess cyanobacterial bloom frequency across the United States at multiple spatial scales
Megan M. Coffer, Blake Schaeffer, Wilson B. Salls, Erin Urquhart, Keith A. Loftin, Richard P. Stumpf, P. Jeremy Werdell, John A. Darling
2021, Ecological Indicators (128)
Cyanobacterial blooms can have negative effects on human health and local ecosystems. Field monitoring of cyanobacterial blooms can be costly, but satellite remote sensing has shown utility for more efficient spatial and temporal monitoring across the United States....
Seismic wave propagation and basin amplification in the Wasatch Front, Utah
Morgan P. Moschetti, David Henry Churchwell, Eric M. Thompson, John Rekoske, Emily Wolin, Oliver S. Boyd
2021, Seismological Research Letters (92) 3626-3641
Ground‐motion analysis of more than 3000 records from 59 earthquakes, including records from the March 2020 Mw">Mw 5.7 Magna earthquake sequence, was carried out to investigate site response and...
Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area
Stephen, M. Westenbroek, Martha G. Nielsen, David E. Ladd
2021, Open-File Report 2021-1008
The Mississippi embayment encompasses about 100,000 square miles and covers parts of eight States. In 2016, the U.S. Geological Survey began updating previous work for a part of the embayment known as the Mississippi Alluvial Plain to support informed water use and agricultural policy in the region. Groundwater, water use,...
