Development of a groundwater-simulation model in the Los Angeles Coastal Plain, Los Angeles County, California
Scott Paulinski, editor(s)
2021, Scientific Investigations Report 2021-5088
Executive SummaryThe Los Angeles Coastal Plain (LACP) covers about 580 square miles and is the largest coastal plain of semiarid southern California. The LACP is heavily developed with mostly residential, commercial, and industrial land uses that rely heavily on groundwater for water supply. In 2010, the LACP was home to...
The Mount Hood fault zone, active faulting at the crest of the dynamic Cascade Range, north-central Oregon, USA
Ian Madin, Ashley R. Streig, Scott E.K. Bennett
2021, Book chapter, From Terranes to Terrains: Geologic Field Guides on the Construction and Destruction of the Pacific Northwest
The Mount Hood fault zone is a N-trending, ~55-km-long zone of active faulting along the western margin of the Hood River graben in north-central Oregon. The Mount Hood fault zone occurs along the crest of the Cascade Range and consists of multiple active fault segments. It is presently unclear how...
Late Cenozoic paleogeographic reconstruction of the San Francisco Bay Area from analysis of stratigraphy, tectonics, and tephrochronology
Andrei Sarna-Wojcicki
2021, GSA Memoirs (217) 443-472
The Neogene stratigraphic and tectonic history of the Mount Diablo area is a consequence of the passage of the Mendocino Triple Junction (MTJ) by the San Francisco Bay area between 12 and 6 Ma, volcanism above a slab-window trailing the MTJ, and crustal transpression beginning ~8-6 Ma, when the Pacific...
Late Cenozoic tephrochronology of the Mount Diablo area within the evolving plate-tectonic boundary zone of northern California
Andrei Sarna-Wojcicki, Raymond Sullivan, Alan L. Deino, Laura Walkup, J. Ross Wagner, Elmira Wan
2021, GSA Memoirs (217) 393-441
We present a tephrochronologic/chronostratigraphic database for the Mount Diablo area and greater San Francisco Bay region that provides a spatial and temporal framework for geologic studies in the region, including stratigraphy, paleogeography,...
A decision tool to identify population management strategies for common ravens and other avian predators
Andrea Faye Currylow, Brenda Hanley, Kerry L. Holcomb, Timothy Shields, Stephen Boland, William Boarman, Mercy Vaughn
2021, Human-Wildlife Interactions (15)
Some avian species have developed the capacity to leverage resource subsidies associated with human manipulated landscapes to increase population densities in habitats with naturally low carrying capacities. Elevated corvid densities and new territory establishment have led to an unsustainable increase in depredation pressure on sympatric native wildlife prey...
Schistosome infection in Senegal is associated with different spatial extents of risk and ecological drivers for Schistosoma haematobium and S. mansoni
Isabel J. Jones, Susanne H. Sokolow, Andrew J Chamberlin, Andrea J Lund, Nicolas Jouanard, Lydie Bandagny, Raphael Ndione, Simon Senghor, Anne-Marie Schacht, Gilles Riveau, Skylar R. Hopkins, Jason R. Rohr, Justin V. Remais, Kevin D. Lafferty, Armand M. Kuris, Chelsea L. Wood, Giulio A. De Leo
2021, PLoS Neglected Tropical Diseases (15)
Schistosome parasites infect more than 200 million people annually, mostly in sub-Saharan Africa, where people may be co-infected with more than one species of the parasite. Infection risk for any single species is determined, in part, by the distribution of its obligate intermediate host snail. As...
Assessing potential groundwater-level declines from future withdrawals in the Hualapai Valley, northwestern Arizona
Jacob E. Knight, Bruce Gungle, Jeffrey R. Kennedy
2021, Scientific Investigations Report 2021-5077
A numerical groundwater flow model of the Hualapai Valley Basin in northwestern Arizona was developed to assist water-resource managers in understanding the potential effects of projected groundwater withdrawals on groundwater levels in the basin. The Hualapai Valley Hydrologic Model (HVHM) simulates the hydrologic system for the years 1935 through 2219,...
Genome-wide SNP analysis reveals multiple paternity in Burmese pythons invasive to the Greater Florida Everglades
James Skelton, Ian A. Bartoszek, Caitlin Beaver, Kristen Hart, Margaret Hunter
2021, Journal of Herpetology (55) 355-360
Reproductive strategies are an essential component of invasion ecology that influence invasion success and rates of population growth. Burmese Pythons (Python bivittatus) are large constrictor snakes that were introduced to the Greater Everglades Ecosystem of southern Florida, USA, from Asia. Since their introduction, these giant...
Shifting correlations among multiple aspects of weather complicate predicting future demography of a threatened species
Allison M Louthan, Jeffrey R. Walters, Adam Terando, Victoria Garcia, William F. Morris
2021, Ecosphere (12)
Most studies of the ecological effects of climate change consider only a limited number of weather drivers that could affect populations, though we know that multiple weather drivers can simultaneously affect population growth rate. Multiple drivers could simultaneously increase/decrease one vital rate, or one may increase...
Culverts delay upstream and downstream migrations of river herring (Alosa spp.)
Derrick Alcott, Elsa Goerig, Theodore R. Castro-Santos
2021, River Research and Applications (37) 1400-1412
Alewife (Alosa pseudoharengus) and blueback herring (Alosa aestivalis) are iteroparous anadromous fish found throughout the East Coast of North America. The phenology of anadromous fish migrations is important for fitness, and the duration of spawning migrations has been compressed in recent years in response to climate...
Deep learning approaches for improving prediction of daily stream temperature in data-scarce, unmonitored, and dammed basins
Farshid Rahmani, Chaopeng Shen, Samantha K. Oliver, Kathryn Lawson, Alison P. Appling
2021, Hydrological Processes (35) e14400
Basin-centric long short-term memory (LSTM) network models have recently been shown to be an exceptionally powerful tool for stream temperature (Ts) temporal prediction (training in one period and predicting in another period at the same sites). However, spatial extrapolation is a well-known challenge to modelling Ts and...
Investigating the effect of enhanced oil recovery on the noble gas signature of casing gases and produced waters from selected California oil fields
R. L. Tyne, P. H. Barry, R. Karolytė, D. J. Bryne, Justin T. Kulongoski, D.J. Hillegonds, C. J. Ballentine
2021, Chemical Geology (584)
In regions where water resources are scarce and in high demand, it is important to safeguard against contamination of groundwater aquifers by oil-field fluids (water, gas, oil). In this context, the geochemical characterisation of these fluids is critical so that anthropogenic contaminants can be readily identified. The first step...
A simplified method for rapid estimation of emergency water supply needs after earthquakes
Joseph Charles Toland, Anne Wein
2021, Water (13)
Researchers are investigating the problem of estimating households with potable water service outages soon after an earthquake. Most of these modeling approaches are computationally intensive, have large proprietary data collection requirements or lack precision, making them unfeasible for rapid assessment, prioritization, and allocation of emergency water resources in large, complex...
Age-0 Silver Carp otolith microchemistry and microstructure reveal multiple early life environments and protracted spawning in the upper Mississippi River
Jesse A. Williams, Gregory W. Whitledge, Brent C. Knights, Nicholas C. Bloomfield, James T. Lamer
2021, North American Journal of Fisheries Management (43) 141-153
Silver Carp Hypophthalmichthys molitrix are highly mobile and fecund planktivorous cyprinids that have invaded much of the Mississippi River and are known to alter food webs and compete with native planktivores. In 2016, for the first time, an abundance of age-0 Silver Carp (n = 12,208; 16–231 mm) were...
Satellite-derived barrier response and recovery following natural and anthropogenic perturbations, northern Chandeleur Islands, Louisiana
Julie Bernier, Jennifer L. Miselis, Nathaniel Plant
2021, Remote Sensing (v. 18)
The magnitude and frequency of storm events, relative sea-level rise (RSLR), sediment supply, and anthropogenic alterations drive the morphologic evolution of barrier island systems, although the relative importance of any one driver will vary with the spatial and temporal scales considered. To explore the relative contributions of storms and human...
Managing water resources on Long Island, New York, with integrated, multidisciplinary science
Robert F. Breault, John P. Masterson, Christopher Schubert, Liv M. Herdman
2021, Fact Sheet 2021-3044
Nutrients, harmful algal blooms, and synthetic chemicals like per- and polyfluoroalkyl substances (PFAS) and 1,4-dioxane threaten Long Island’s water resources by affecting the quality of drinking water and ecologically sensitive habitats that support the diverse wildlife throughout the island. Understanding the occurrence, fate, and transport of these potentially harmful chemicals...
Arc versus river: The geology of the Columbia River Gorge
Jim E. O'Connor, Ray Wells, Scott E.K. Bennett, Charles M. Cannon, Lydia M. Staisch, James L Anderson, Anthony Francis Pivarunas, Gabriel Wells Gordon, Richard J. Blakely, Mark E. Stelten, Russell C. Evarts
2021, Book chapter, From terranes to terrains: Geologic field guides on the construction and destruction of the Pacific Northwest
The Columbia River Gorge is the Columbia River’s long-held yet evolving passage through the volcanic arc of the Cascade Range. The globally unique setting of a continental-scale river bisecting an active volcanic arc at the leading edge of a major plate boundary creates a remarkable setting where dynamic volcanic and...
Paleozoic and Mesozoic tectonic events west of the Waterbury Dome: Results of new mapping in the western Connecticut Highlands
William C. Burton, William J. Devlin
2021, Book chapter, Field excursions from the 2021 GSA section meetings
This field trip highlights the results of recent U.S. Geological Survey (USGS) bedrock geologic mapping in four 7.5 min quadrangles in the western Connecticut highlands near Southbury, Connecticut, USA. The rocks are broadly within what Rodgers (1985) called the Hartland and Gneiss Dome...
Evaluating the state-of-the-art in remote volcanic eruption characterization Part I: Raikoke volcano, Kuril Islands
Kathleen McKee, Cassandra Marie Smith, Kevin Reath, Eveanjelene Snee, Sean Maher, Robin S. Matoza, Simon A Carn, Larry G. Mastin, Kyle R. Anderson, David Damby, Diana Roman, Artem Degterev, Alexander Rybin, Marina Chibisova, Jelle D. Assink, Rodrigo de Negri Levia, Anna Perttu
2021, Journal of Volcanology and Geothermal Research (419) 1-14
Raikoke, a small, unmonitored volcano in the Kuril Islands, erupted in June 2019. We integrate data from satellites (including Sentinel-2, TROPOMI, MODIS, Himawari-8), the International Monitoring System (IMS) infrasound network, and global lightning detection network (GLD360) with information from local authorities and social media to retrospectively characterize the eruptive sequence...
Methods for estimating regional skewness of annual peak flows in parts of eastern New York and Pennsylvania, based on data through water year 2013
Andrea G. Veilleux, Daniel M. Wagner
2021, Scientific Investigations Report 2021-5015
Bulletin 17C (B17C) recommends fitting the log-Pearson Type III (LP−III) distribution to a series of annual peak flows at a streamgage by using the method of moments. The third moment, the skewness coefficient (or skew), is important because the magnitudes of annual exceedance probability (AEP) flows estimated by using the...
The sensitivity of a unionid mussel (Lampsilis siliquoidea) to a permitted effluent and elevated potassium in the effluent
James L. Kunz, Ning Wang, David Martinez, Suzanne Dunn, Danielle M. Cleveland, Jeffery A. Steevens
2021, Environmental Toxicology and Chemistry (40) 3410-3420
Freshwater mussels are one of the most imperiled groups of animals in the world and are among the most sensitive species to a variety of chemicals. However, little is known about the sensitivity of freshwater mussels to wastewater effluents. The objectives of the present study were to (1) assess the...
Multidisciplinary constraints on magma compressibility, the pre-eruptive exsolved volatile fraction, and the H2O/CO2 molar ratio for the 2006 Augustine eruption, Alaska
Valerie K. Wasser, Taryn M. Lopez, Kyle R. Anderson, Pavel E. Izbekov, Jeffrey T. Freymueller
2021, Geochemistry, Geophysics, Geosystems (G-Cubed) (22) 1-24
Geodetically modeled reservoir volume changes during volcanic eruptions are commonly much smaller than the observed eruptive volumes. This discrepancy is thought to be partially due to the compressibility of magma, which is largely controlled by the presence of exsolved volatiles. The 2006 eruption of Augustine Volcano, Alaska, produced an eruptive...
Upper Grand Coulee: New views of a channeled scabland megafloods enigma
Richard B. Waitt, Brian F. Atwater, Karin Lehnigk, Isaac J. Larsen, Bruce N. Bjornstad, Michelle A. Hanson, Jim E. O'Connor
2021, Book chapter, From terranes to terrains: Geologic field guides on the construction and destruction of the Pacific Northwest
New findings about old puzzles occasion rethinking of the Grand Coulee, greatest of the scabland channels. Those puzzles begin with antecedents of current upper Grand Coulee. By a recent interpretation, the upper coulee exploited the former high-level valley of a preflood trunk stream that had drained to the southwest beside...
The Biscuit Brook and Neversink Reservoir Watersheds: Long-term investigations of stream chemistry, soil chemistry, and aquatic ecology in the Catskill Mountains, New York, USA, 1983 to 2020
Peter S. Murdoch, Douglas A. Burns, Michael McHale, Jason Siemion, Barry P. Baldigo, Gregory B. Lawrence, Scott D. George, Michael R. Antidormi, Donald B. Bonville
2021, Hydrological Processes (35)
This data note describes the Biscuit Brook and Neversink Reservoir watershed Long-Term Monitoring Data that includes: 1) stream discharge, (1983 – 2020 for Biscuit Brook and 1937 – 2020 for the Neversink Reservoir watershed), 2) stream water chemistry, 1983-2020, at 4 stations, 3) fish survey data from 16 locations in...
Evaluating the impact of watershed development and climate change on stream ecosystems: A Bayesian network modeling approach
Song S. Qian, Jonathan G. Kennen, Jason May, Mary Freeman, Thomas F Cuffney
2021, Water Research (205)
A continuous-variable Bayesian network (cBN) model is used to link watershed development and climate change to stream ecosystem indicators. A graphical model, reflecting our understanding of the connections between climate change, weather condition, loss of natural land cover, stream flow characteristics, and stream ecosystem indicators is used as the basis for...
