Geomorphic controls on floodplain connectivity, ecosystem services, and sensitivity to climate change: An example from the lower Missouri River
R. B. Jacobson, Kristen L. Bouska, Edward Bulliner, Garth A. Lindner, Craig Paukert
2022, Water Resources Research (58)
Floodplains of large rivers are exploited for agricultural production, industrial and municipal development, and transportation infrastructure. Recently, increased frequency of costly floods has prompted consideration of whether offsetting benefits might accrue from management of floodplains for ecosystem services. We employed a simple inundation model for 800 km of the Lower Missouri...
Louisiana and Landsat
U.S. Geological Survey
2022, Fact Sheet 2022-3059
Louisiana holds a unique historical, economic, and cultural position in the national consciousness. Its off-shore oil operations help fuel the U.S. economy. The Port of South Louisiana is the busiest in the United States by cargo volume; the nearby Port of New Orleans is the sixth busiest. The former French...
Nebraska and Landsat
U.S. Geological Survey
2022, Fact Sheet 2022-3056
The rolling plains of Nebraska occupy a storied place in the American psyche. For those living outside the Midwest, the Cornhusker State may be seen as a symbol of the Nation’s heartland, cropped border to border, with country churches and barely standing barns to be found around every turn of...
Revisiting the depth distribution of seismicity before and after the 2004–2008 eruption of Mount St. Helens
Han Zhang, Margaret Glasgow, Brandon Schmandt, Weston Thelen, Seth C. Moran, Amanda Thomas
2022, Journal of Volcanology and Geothermal Research (430)
Hypocenter estimation at active volcanoes improves our understanding of their magmatic systems and indicates changing conditions at depth for continuously monitored volcanoes. The most active volcano in the Cascades Range, Mount St. Helens, has a multi-decadal earthquake catalog and it shows an apparent change in the depth distribution of seismicity before and after the...
Predicting larval alewife transport in Lake Michigan using hydrodynamic and Lagrangian particle dispersion models
Mark D Rowe, Sara E Prendergast, Karen M Alofs, David B. Bunnell, Edward S. Rutherford, Eric J. Anderson
2022, Limnology and Oceanography (67) 2042-2058
Several species of fish in large lakes and marine environments have a pelagic larval stage, and are subject to variable transport that can ultimately regulate survival and recruitment success. Alewife, Alosa pseudoharengus, are subject to transport by complex coastal currents during their pelagic larval stage (~ 30 d). We...
Remote sensing application for landslide detection, monitoring along eastern Lake Michigan (Miami Park, MI)
Guzalay Sataer, Mohamed Sultan, Mustafa Kemal Emil, John A. Yellich, Monica Palaseanu-Lovejoy, Richard Becker, Esayas Gebremichael, Karem Abdelmohsen
2022, Remote Sensing (14)
We assessed the nature and spatial and temporal patterns of deformation over the Miami Park bluffs on the eastern margin of Lake Michigan and investigated the factors controlling its observed deformation. Our approach involved the following steps: (1) extracting bluff deformation rates (velocities along the line of...
The evolution of rock friction is more sensitive to slip than elapsed time, even at near-zero slip rates
Pathikrit Bhattacharyaa, Allan Rubin, Terry Tullis, Nicholas M. Beeler, Keishi Okazaki
2022, Proceedings of the National Academy of Sciences (119)
For many decades, frictional strength increase at low slip rates has been ascribed to time-dependent contact-area growth across the sliding interface. As a result, phenomenological models that correctly predict contact-area growth, as observed in laboratory experiments, have also been widely assumed to be appropriate descriptors of frictional strength evolution. We...
Geologic framework, anthropogenic impacts, and hydrodynamics contribute to variable sediment availability and shoreface morphology at the Rockaway Peninsula, NY
Emily A. Wei, Jennifer L. Miselis
2022, Journal of Marine Science and Engineering (10)
Recent field and modeling studies have shown that barrier island resiliency is sensitive to sediment fluxes from the shoreface, making it important to evaluate how shoreface sediment availability varies in coastal systems. To do this, we assessed shoreface geology and morphology along the Rockaway Peninsula, NY, USA....
Achievements and prospects of global broadband seismographic networks after 30 years of continuous geophysical observations
Adam T. Ringler, Robert Anthony, R. C. Aster, C. J. Ammon, S. Arrowsmith, Harley M. Benz, C. Ebeling, A. Frassetto, W. Y. Kim, Paula Koelemeijer, H. C. P. Lau, V. Lekic, J. P. Montagner, P. G. Richards, D. P. Schaff, M. Vallee, William L. Yeck
2022, Reviews of Geophysics (60)
Global seismographic networks (GSNs) emerged during the late nineteenth and early twentieth centuries, facilitated by seminal international developments in theory, technology, instrumentation, and data exchange. The mid- to late-twentieth century saw the creation of the World-Wide Standardized Seismographic Network (1961) and International Deployment of Accelerometers (1976), which advanced global geographic...
Gull plumages are, and are not, what they appear to human vision
Muir D Eaton, Pilar Benites, Luke Campillo, Robert E. Wilson, Sarah A. Sonsthagen
2022, Annales Zoologici Fennici (59) 187-203
Clear correlations between human and bird visual assessments of color have been documented, and are often assumed, despite fundamental differences in human and avian visual physiology and morphology. Analyses of plumage colors with avian perceptual models have shown widespread hidden inter-sexual and inter-specific color variation among passerines perceived...
Comprehensive pressure core analysis for hydrate-bearing sediments from Gulf of Mexico Green Canyon Block 955, including assessments of geomechanical viscous behavior and nuclear magnetic resonance permeability
Jun Yoneda, Yusuke Jin, Michihiro Muraoka, Motoi Oshima, Kiyofumi Suzuki, William F. Waite, Peter Flemings
2022, AAPG Bulletin (106) 1143-1177
Quantifying the petrophysical and geomechanical properties of gas hydrate reservoirs is essential for understanding the natural hydrate system and predicting gas production behavior for future resource development. Pressure-core analysis tools were used to characterize methane hydrate–bearing sediments recovered from the Gulf of Mexico Green Canyon Block 955, under an international...
Ten-year ecological responses to fuel treatments within semiarid Wyoming big sagebrush ecosystems
David A. Pyke, Scott E. Shaff, Jeanne C. Chambers, Eugene W. Schupp, Beth A. Newingham, Margaret L Gray, Lisa M. Ellsworth
2022, Ecosphere (13)
Sagebrush ecosystems of western North America are threatened by invasive annual grasses and wildfires that can remove fire-intolerant shrubs for decades. Fuel reduction treatments are used ostensibly to aid in fire suppression, conserve wildlife habitat, and restore historical fire regimes, but long-term ecological impacts of these treatments are not clear....
Fibropapillomatosis dynamics in green sea turtles Chelonia mydas over 15 years of monitoring in Akumal Bay, Quintana Roo, Mexico
Fernando A. Munoz Teneria, Vanessa Labrada-Martagon, Roberto Herrera-Pavon, Thierry M. Work, Erik Gonzalez Ballesteros, Ana Negrete-Philippe, Gisela Maldonado-Saldana
2022, Diseases of Aquatic Organisms (149) 133-143
ABSTRACT: Fibropapillomatosis (FP) is a tumor disease that affects all sea turtle species but is mainly seen in green turtles Chelonia mydas. The pathology of FP has been described extensively, but its dynamics in populations over time have been less studied. We analyzed the dynamics of FP in a population...
Root-mean-square error (RMSE) or mean absolute error (MAE): When to use them or not
Timothy O. Hodson
2022, Geoscientific Model Development (15) 5481-5487
The root-mean-squared error (RMSE) and mean absolute error (MAE) are widely used metrics for evaluating models. Yet, there remains enduring confusion over their use, such that a standard practice is to present both, leaving it to the reader to decide which is more relevant. In a recent reprise to the...
Thermophysical and compositional properties of paleobedforms on Mars
Aaron R. Weintraub, Christopher S. Edwards, Matthew Chojnacki, Lauren A. Edgar, Lori K. Fenton, Sylvain Piqueux, Amber L. Gullikson
2022, Journal of Geophysical Research - Planets (127)
Bedforms on Earth and Mars are often preserved in the rock record in the form of sedimentary rock with distinct cross-bedding. On rare occasions, the full-surface geometry of a bedform can be preserved through burial and lithification. These features, known as paleobedforms, are found in a variety...
Using piecewise regression to identify biological phenomena in biotelemetry datasets
David W. Wolfson, David E. Andersen, John R. Fieberg
2022, Journal of Animal Ecology (91) 1755-1769
1. Technological advances in the field of animal tracking have greatly expanded the potential to remotely monitor animals, opening the door to exploring how animals shift their behavior over time or respond to external stimuli. A wide variety of animal-borne sensors can provide information on an animal’s location, movement characteristics,...
Tephrochronology of the Miocene Monterey and Modelo Formations, California
Jeffrey R. Knott, Andrei M. Sarna-Wojcicki, John A. Barron, Elmira Wan, Nancy Heizler, Priscilla Martinez
2022, GSA Special Papers
Tuff beds have been known in the Miocene Monterey and Modelo Formations since the initial descriptions; however, age control and correlation is predominantly biostratigraphy. Here we combine tephrochronology and biostratigraphy in order to provide numerical age control for eight sedimentary sequences of the Monterey and Modelo Formations from Monterey, California...
Assessing spatial transferability of a random forest metamodel for predicting drainage fraction
Elisa Bjerre, Michael N. Fienen, Raphael Schneider, Julian Koch, Anker L. Højberg
2022, Journal of Hydrology (612)
Fully distributed hydrological models are widely used in groundwater management, but model speed and data requirements impede their use for decision support purposes. Metamodels provide a simpler and faster model which emulates the underlying complex model using machine learning techniques. However, metamodel predictions beyond the...
Riparian buffers provide refugia during secondary forest succession
Michelle E. Thompson, Brian J. Halstead, Maureen A. Donnelly
2022, Diversity and Distributions (28) 2008-2019
AimSecondary forests regenerating from human disturbance are increasingly becoming a predominant forest type in many regions, and they play a significant role in forest community dynamics. Understanding the factors that underlie the variation in species responses during secondary succession is important for understanding community assembly and biodiversity...
The formation mechanisms for mid-latitude ice scarps on Mars
Kaj E. Williams, Colin M. Dundas, Melinda A. Kahre
2022, Icarus (386)
Mid-latitude exposed ice scarps have recently been identified on Mars (Dundas et al., 2018; 2021). The presence of such surface ice exposures at relatively low latitudes was itself a mystery, and the formation dynamics of such scarps have also not been explained. In this work we model the ice ablation...
Results of automated scanning electron microscope (SEM) analyses of rock and stream sediment samples from the Taurus porphyry copper deposit area, Tanacross quadrangle, eastern Alaska
Karen D. Kelley, Katharina Pfaff, Garth E. Graham
2022, Open-File Report 2022-1046
Numerous porphyry copper-molybdenum-gold and epithermal deposits define a belt that extends from Eastern Alaska to western Yukon, Canada. An orientation study conducted near the Taurus porphyry deposit was designed to test methods that require minimal sample collection, preparation, and analytical time to determine the viability of indicator mineral studies as...
Large-scale distribution models for optimal prediction of Eastern black rail habitat within tidal ecosystems
Bryan S. Stevens, Courtney J. Conway, Kirsten Luke, Aimee Weldon, Christy Hand, Amy Schwarzer, Fletcher Smith, Craig Watson, Bryan D. Watts
2022, Global Ecology and Conservation (38)
Eastern black rails (Laterallus jamaicensis jamaicensis) are among the rarest and least-studied birds in North America and were recently listed as threatened under the U.S. Endangered Species Act. Spatial models that predict habitat quality across the subspecies range are therefore needed to inform conservation, recovery, and monitoring efforts for this rare bird. We...
Focus areas for data acquisition for potential domestic resources of 13 critical minerals in the conterminous United States and Puerto Rico — Antimony, barite, beryllium, chromium, fluorspar, hafnium, helium, magnesium, manganese, potash, uranium, vanadium, and zirconium
Jane M. Hammarstrom, Connie L. Dicken, Laurel G. Woodruff, Allen K. Andersen, Sean T. Brennan, Warren C. Day, Benjamin J. Drenth, Nora K. Foley, Susan Hall, Albert H. Hofstra, Anne E. McCafferty, Anjana K. Shah, David A. Ponce
2022, Open-File Report 2019-1023-D
The Earth Mapping Resources Initiative (Earth MRI) is conducted in phases to identify areas for acquiring new geologic framework data to identify potential domestic resources of the 35 mineral materials designated as critical minerals for the United States. This report describes the data sources and summary results for 13 critical...
Africa’s drylands in a changing world: Challenges for wildlife conservation under climate and land-use changes in the Greater Etosha Landscape
Wendy Christine Turner, Stéphanie Périquet, Claire E. Goelst, Kimberlie B. Vera, Elissa Z. Cameron, Kathleen A. Alexander, Jerrold L. Belant, Claudine C. Cloete, Pierre du Preez, Wayne M. Getz, Robyn S. Hetem, Pauline L. Kamath, Marthin K. Kasaona, Monique Mackenzie, John Mendelsohn, John K.E. Mfune, Jeff Muntifering, Ruben Portas, H. Ann Scott, W. Maartin Strauss, Wilferd Versfeld, Bettina Wachter, George Wittemyer, J. Werner Kilian
2022, Global Ecology and Conservation (38)
Proclaimed in 1907, Etosha National Park in northern Namibia is an iconic dryland system with a rich history of wildlife conservation and research. A recent research symposium on wildlife conservation in the Greater Etosha Landscape (GEL) highlighted increased concern of how...
Subaerial volcaniclastic deposits — Influences of initiation mechanisms and transport behaviour on characteristics and distributions
Jon J. Major
2022, Book chapter, Volcanic processes in the sedimentary record: When volcanoes meet the environment
Subaerial volcaniclastic deposits are produced principally by volcanic debris avalanches, pyroclastic density currents, lahars, and tephra falls. Those deposits have widely ranging geomorphic and sedimentologic characteristics; they can mantle, modify, or create new topography, and their emplacement and subsequent reworking can have an outsized impact on the geomorphic and sedimentologic...
