The influence of submerged coastal structures on nearshore flows and wave runup
Renan F. da Silva, Jeff Hansen, Dirk P. Rijnsdorp, Ryan Lowe, Mark L. Buckley
2022, Coastal Engineering (177)
Engineered and natural submerged coastal structures (e.g., submerged breakwaters and reefs) modify incident wave fields and thus can alter hydrodynamic processes adjacent to coastlines. Although submerged structures are generally assumed to promote beach protection by dissipating waves offshore and creating sheltered conditions in...
Genome resequencing clarifies phylogeny and reveals patterns of selection in the toxicogenomics model Pimephales promelas
Katy E. Klymus, Robert A. Hrabik, Nathan Thompson, Robert S. Cornman
2022, PeerJ (10)
BackgroundThe fathead minnow (Pimephales promelas) is a model species for toxicological research. A high-quality genome reference sequence is available, and genomic methods are increasingly used in toxicological studies of the species. However, phylogenetic relationships within the genus remain incompletely known and little population-genomic data are available for fathead minnow...
Methods for robust estimates of tree biomass from pollen accumulation rates: Quantifying paleoecological reconstruction uncertainty
Clarke Alexandra Knight, John J. Battles, M. Jane Bunting, Marie Rhondelle Champagne, James A. Wanket, David Wahl
2022, Frontiers in Ecology and Evolution (10)
Pollen accumulation rates (PAR, grains cm–2 year–1) have been shown to be a reliable but methodologically complex bioproxy for quantitative reconstruction of past tree abundance. In a prior study, we found that the PARs of major tree taxa – Pseudotsuga, Pinus, Notholithocarpus, and the pollen group TC (Taxaceae and Cupressaceae families) –...
Tracing the sources and depositional history of mercury to coastal northeastern U.S. lakes
Vivien F. Taylor, Joshua D. Landis, Sarah E. Janssen
2022, Environmental Science: Processes and Impacts (24) 1805-1820
Mercury (Hg) deposition was reconstructed in sediment cores from lakes in two coastal U.S. National Parks: Acadia National Park (ANP) and Cape Cod National Seashore (CCNS), to fill an important spatial gap in Hg deposition records and to explore changing sources of Hg and processes affecting Hg accumulation in these...
Trace elements in olivine fingerprint the source of 2018 magmas and shed light on explosive-effusive eruption cycles at Kīlauea Volcano
Adrien Mourey, Thomas Shea, Kendra J. Lynn, Allan Lerner, Sarah Lambart, Fidel Costa, Jeffrey Oalmann, R. Lopaka Lee, Cheryl Gansecki
2022, Earth and Planetary Science Letters (595)
Understanding magma genesis and the evolution of intensive parameters (temperature, pressure, composition, degree of melting) in the mantle source of highly active volcanic systems is crucial for interpreting magma supply changes over time and recognizing cyclic behavior to anticipate future volcanic behavior. Major and trace elements in olivine are commonly used to study variations...
Democratizing macroecology: Integrating unoccupied aerial systems with the National Ecological Observatory Network
Michael J. Koontz, Victoria Mary Scholl, Anna I Spiers, Megan E Cattau, John Adler, Joseph McGlinchy, Tristan Goulden, Brett A Melbourne, Jennifer K. Balch
2022, Ecosphere (13)
Macroecology research seeks to understand ecological phenomena with causes and consequences that accumulate, interact, and emerge across scales spanning several orders of magnitude. Broad-extent, fine-grain information (i.e., high spatial resolution data over large areas) is needed to adequately capture these cross-scale phenomena, but these data have...
Predicting physical and geomorphic habitat associated with historical lake whitefish and cisco spawning locations in Lakes Erie and Ontario
Hannah M Schaefer, Andrew Edgar Honsey, David Bunnell, Brian Weidel, Robin DeBruyne, James S. Diana, Dimitry Gorsky, Edward F. Roseman
2022, Journal of Great Lakes Research (48) 1636-1646
The Great Lakes basin was historically populated by multiple, coevolved coregonine species, but much of that diversity has been lost. In Lakes Erie and Ontario, both lake whitefish (Coregonus clupeaformis) and cisco (Coregonus artedi) occurred in high numbers before habitat degradation, overfishing, invasive species, and other factors caused significant declines. There is growing...
Sedimentary geochemistry of deepwater slope deposits in southern Lake Tanganyika (East Africa): Effects of upwelling and minor lake level oscillations
Michael M. McGlue, Geoffrey S. Ellis, McKenzie A Brannon, Jennifer C Latimer, Jeffery S Stone, Sarah J. Ivory, Neema E Mganza, Michael J. Soreghan, Christopher A. Scholz
2022, Journal of Sedimentary Research (92) 721-738
Lake Tanganyika ranks among the most valuable modern analogs for understanding depositional processes of carbonaceous sediments in ancient tropical rifts. Prior research on Lake Tanganyika has emphasized the importance of bottom-water anoxia, depositional processes (hemipelagic settling versus gravity flows), and large-scale (100s of meters) lake level change on the quality...
NABat ML: Utilizing deep learning to enable crowdsourced development of automated, scalable solutions for documenting North American bat populations
Ali Khalighifar, Benjamin S. Gotthold, Erin Adams, Jenny K. Barnett, Laura O. Beard, Eric R. Britzke, Paul A. Burger, Kimberly Chase, Zackary Cordes, Paul M. Cryan, Emily Ferrall, Christopher T. Fill, Scott E. Gibson, G. Scott Haulton, Kathryn Irvine, Lara S. Katz, William L. Kendall, Christen A. Long, Oisin Mac Aodha, Tessa McBurney, Sarah McCarthy-Neumann, Matthew W. McKown, Joy O’Keefe, Lucy D. Patterson, Kristopher A. Pitcher, Matthew Rustand, Jordi L. Segers, Kyle Seppanen, Jeremy L. Siemers, Christian Stratton, Bethany R. Straw, Theodore J. Weller, Brian E. Reichert
2022, Journal of Applied Ecology (59) 2849-2862
Bats play crucial ecological roles and provide valuable ecosystem services, yet many populations face serious threats from various ecological disturbances. The North American Bat Monitoring Program (NABat) aims to use its technology infrastructure to assess status and trends of bat populations, while developing innovative and community-driven conservation solutions.Here, we...
System characterization report on the Amazônia-1 multispectral sensor
James C. Vrabel, Gregory L. Stensaas, Cody Anderson, Jon Christopherson, Minsu Kim, Seonkyung Park
2022, Open-File Report 2021-1030-N
Executive SummaryThis report addresses system characterization of the Instituto Nacional de Pesquisas Espaciais Amazônia-1 satellite and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence. These reports present and detail the methodology and...
Magnetotelluric investigations of the Kīlauea Volcano, Hawaii
G.M. Hoversten, Erika Gasperikova, Randall Mackie, David Myer, James P. Kauahikaua, Greg A. Newman, Nestor Cuevas
2022, Journal of Geophysical Research: Solid Earth (127)
In 2002 and 2003 a collaborative effort was undertaken between Lawrence Berkeley National Laboratory, Sandia National Laboratories, the U.S. Geological Survey (USGS) Menlo Park, the USGS Hawaiian Volcano Observatory, and Electromagnetic Instruments Inc. to study the Kīlauea volcano in Hawaii using the magnetotelluric (MT) technique. The work was motivated by...
GSPy: A new toolbox and data standard for Geophysical Datasets
Stephanie R. James, Nathan Leon Foks, Burke J. Minsley
2022, Frontiers in Earth Science - Environmental Informatics and Remote Sensing (10)
The diversity of geophysical methods and datatypes, as well as the isolated nature of various specialties (e.g., electromagnetic, seismic, potential fields) leads to a profusion of separate data file formats and documentation conventions. This can hinder cooperation and reduce the impact of datasets researchers have invested in heavily...
Relative sea-level change in South Florida during the past ~5000 years
Nicole S. Khan, Erica L. Ashe, Ryan P. Moyer, Andrew C. Kemp, Simon E. Engelhart, Matthew J. Brain, Lauren T. Toth, Amanda R. Chappel, Margaret Christie, Robert E. Kopp, Benjamin P. Horton
2022, Global and Planetary Change (216)
A paucity of detailed relative sea-level (RSL) reconstructions from low latitudes hinders efforts to understand the global, regional, and local processes that cause RSL change. We reconstruct RSL change during the past ~5 ka using cores of mangrove peat at two sites (Snipe Key and Swan...
Subsampling large-scale digital elevation models to expedite geospatial analyses in coastal regions
Kelly Ann Murphy, David G. Zawada, Kimberly K. Yates
2022, Journal of Coastal Research (38) 1236-1245
Large-area, high-resolution digital elevation models (DEMs) created from light detection and ranging (LIDAR) and/or multibeam echosounder data sets are commonly used in many scientific disciplines. These DEMs can span thousands of square kilometers, typically with a spatial resolution of 1 m or finer, and can be...
Achieving sub-nanoTesla precision in multirotor UAV aeromagnetic surveys
Geoffrey Phelps, Robert E. Bracken, John Spritzer, David S. White
2022, Journal of Applied Geophysics (206)
An uncrewed aerial vehicle (UAV) multirotor aeromagnetic system using a 5-m sling load for a magnetic sensor system is described and characterized. Four magnetic surveys with identical flight lines were completed, at two nominal altitudes of 25 and 40 m. The surveys were used to assess the repeatability of data collected...
Quantifying modeling uncertainty in simplified beam models for building response prediction
S. Farid Ghahari, Khachik Sargsyan, Mehmet Celebi, Ertugrul Taciroglu
2022, Structural Control and Health Monitoring (29)
The use of simple models for response prediction of building structures is preferred in earthquake engineering for risk evaluations at regional scales, as they make computational studies more feasible. The primary impediment in their gainful use presently is the lack of viable methods for quantifying (and reducing upon) the modeling...
High-resolution marine seismic imaging of the Seattle fault zone: Near surface insights into fault zone geometry, Quaternary deformation, and long-term evolution
G.L Moore, Emily Roland, Scott E.K. Bennett, Janet Watt, Jared W. Kluesner, Daniel S. Brothers, Emma K Myers
2022, Bulletin of the Seismological Society of America (112) 2715-2744
The Seattle fault zone (SFZ) is a north‐directed thrust fault system that underlies the greater Seattle metropolitan area. Evidence of past land level changes, landslides, liquefaction, and a local tsunami indicate that this 70‐km‐long fault system can host up to M 7–7.5 earthquakes. Both...
How does precipitation variability control bedload response across a mountainous channel network in a maritime climate?
Jeffrey Keck, Erkan Istanbulluoglu, Jessica Lundquist, Christina Bandaragoda, Kristin L. Jaeger, Guillaume S. Mauger, Alex Horner-Devine
2022, Water Resources Research (58)
Modeled stream discharge is often used to drive sediment transport models across channel networks. Because sediment transport varies non-linearly with flow rates, discharge modeled from daily total precipitation distributed evenly over 24-hrs may significantly underestimate actual bedload transport capacity. In this study, we assume bedload transport capacity determined from a...
Seasonal activity patterns of bats in high-elevation conifer sky islands
Corinne A. Diggins, W. Mark Ford
2022, Acta Chiropterologica (24) 91-101
In the southern Appalachian Mountains of the southeastern USA, bat communities in high-elevation habitats tend to be relatively under-surveyed. High-elevation habitats may provide important habitat to certain species (i.e., migratory tree bats), and may serve as climate refugia during droughts or high temperatures. We conducted an opportunistic acoustic survey of...
Using machine learning to improve predictions and provide insight into fluvial sediment transport
J. William Lund, Joel T. Groten, Diana L. Karwan, Chad Babcock
2022, Hydrological Processes (36)
A thorough understanding of fluvial sediment transport is critical to addressing many environmental concerns such as exacerbated flooding, degradation of aquatic habitat, excess nutrients, and the economic challenges of restoring aquatic systems. Fluvial sediment samples are integral for addressing these environmental concerns but cannot be collected at every river and...
The effects of prolonged drought on vegetation dieback and megafires in southern California chaparral
Jon Keeley, Theresa J Brennan-Kane, Alexandra D. Syphard
2022, Ecosphere (13)
Drought contributed to extensive dieback of southern California chaparral, and normalized difference vegetation index before drought and near the end of the drought was used to estimate this dieback, after accounting for other disturbances recorded in aerial photographs. Within the perimeters of two megafires that occurred after the drought, the...
Simplifying complex fault data for systems-level analysis: Earthquake geology inputs for U.S. NSHM 2023
Alexandra Elise Hatem, Camille Marie Collett, Richard W. Briggs, Ryan D. Gold, Stephen J. Angster, Edward H. Field, Peter M. Powers, Earthquake Geology Working Group
2022, Scientific Data (9)
As part of the U.S. National Seismic Hazard Model (NSHM) update planned for 2023, two databases were prepared to more completely represent Quaternary-active faulting across the western United States: the NSHM23 fault sections database (FSD) and earthquake geology database (EQGeoDB). In prior iterations of NSHM, fault...
Open removal models with temporary emigration and population dynamics to inform invasive animal management
Bradley Udell, Julien Martin, Christina Romagosa, J. Hardin Waddle, Fred Johnson, Bryan Falk, Amy A. Yackel Adams, Sarah Funck, Jennifer Ketterlin Eckles, Eric Suarez, Frank Mazzotti
2022, Ecology and Evolution (12)
Removal sampling data are the primary source of monitoring information for many populations (e.g., invasive species, fisheries). Population dynamics, temporary emigration, and imperfect detection are common sources of variation in monitoring data and are key parameters for informing management. We developed two open robust-design removal models for simultaneously modeling population...
Long-term impacts of impervious surface cover change and roadway deicing agent application on chloride concentrations in exurban and suburban watersheds
Marissa L. Rossi, Peleg Kremer, Charles A. Cravotta III, Krista E. Scheirer, Steven T. Goldsmith
2022, Science of the Total Environment (851)
Roadway deicing agents, including rock salt and brine containing NaCl, have had a profound impact on the water quality and aquatic health of rivers and streams in urbanized areas with temperate climates. Yet, few studies evaluate impacts to watersheds characterized by relatively low impervious surface cover (ISC; < 15 %). Here, we use long-term (1997-2019),...
Seismometer records of ground tilt induced by debris flows
Michaela Wenner, Kate E. Allstadt, Weston Thelen, Andrew Lockhart, Jacob Hirschberg, Brian W. McArdell, Fabian Walter
2022, Bulletin of the Seismological Society of America (112) 2376-2395
A change in surface loading causes the Earth’s surface to deform. Mass movements, such as debris flows, can cause a tilt large enough to be recorded by nearby instruments, but the signal is strongly dependent on the mass loading and subsurface parameters. Specifically designed sensors for such measurements (tiltmeters) are...
