The San Andreas fault paleoseismic record at Elizabeth Lake: Why are there fewer surface-rupturing earthquakes on the Mojave section?
Sean Bemis, Katherine M. Scharer, James D. Dolan
2021, Bulletin of the Seismological Society of America (111) 1590-1613
The structural complexity of active faults and the stress release history along the fault system may exert control on the locus and extent of individual earthquake ruptures. Fault bends, in particular, are often invoked as a possible mechanism for terminating earthquake ruptures. However, there are few records available to examine...
The Mars Orbiter for Resources, Ices, and Environments (MORIE) science goals and instrument trades in radar, imaging, and spectroscopy
Wendy M. Calvin, Nathaniel E. Putzig, Colin M. Dundas, Ali M Bramson, Briony H. N. Horgan, Kim D Seelos, Hanna G Sizemore, Bethany L. Ehlmann, Gareth A Morgan, John W Holt, Scott L. Murchie, G Wesley Patterson
2021, The Planetary Science Journal (2)
The Mars Orbiter for Resources, Ices, and Environments (MORIE) was selected as one of NASA's 2019 Planetary Mission Concept Studies. The mission builds upon recent discoveries and current knowledge gaps linked to two primary scientific questions: (1) when did elements of the cryosphere form and how are ice deposits linked...
Arctic insect emergence timing and composition differs across thaw ponds of varying morphology
Sarah M. Laske, Kirsty E. B. Gurney, Joshua C. Koch, Joel A. Schmutz, Mark S. Wipfli
2021, Arctic, Antarctic, and Alpine Research (53) 110-126
Freshwater ponds provide habitats for aquatic insects that emerge and subsidize consumers in terrestrial ecosystems. In the Arctic, insects provide an important seasonal source of energy to birds that breed and rear young on the tundra. The abundance and timing of insect emergence from arctic thaw ponds is poorly understood,...
Measurement of suction pressure dynamics of sea lampreys, Petromyzon marinus
Hongyang Shi, Christopher Holbrook, Yunqi Cao, Nelson Sepulveda, Xiaobo Tan
2021, PLoS ONE (16)
Species-specific monitoring activities represent fundamental tools for natural resource management and conservation but require techniques that target species-specific traits or markers. Sea lamprey, a destructive invasive species in the Laurentian Great Lakes and conservation target in North America and Europe, is among very few fishes that...
Spatial and temporal distributions of Dreissena spp. veligers in Lake Huron: Does calcium limit settling success?
Darren S. Kirkendall, David Bunnell, Patricia Dieter, Lauren A. Eaton, Anett S Trebitz, Nicole M Watson
2021, Journal of Great Lakes Research (47) 1040-1049
The larval stage of invasive Dreissena spp. mussels (i.e., veligers) are understudied despite their seasonal numerical dominance among plankton. We report the spring and summer veliger densities and size structure across the main basin, North Channel, and Georgian Bay of Lake Huron, and seek to...
A maximum rupture model for the central and southern Cascadia subduction zone—reassessing ages for coastal evidence of megathrust earthquakes and tsunamis
Alan Nelson, Christopher DuRoss, Robert C. Witter, Harvey M. Kelsey, Simon E. Engelhart, Shannon A. Mahan, Harrison J. Gray, Andrea D. Hawkes, Benjamin P. Horton, Jason S. Padgett
2021, Quaternary Science Reviews (261)
A new history of great earthquakes (and their tsunamis) for the central and southern Cascadia subduction zone shows more frequent (17 in the past 6700 yr) megathrust ruptures than previous coastal chronologies. The history is based on along-strike correlations of Bayesian age models derived from evaluation of 554 radiocarbon ages that...
Bathymetric survey and sedimentation analysis of Lago Patillas, Puerto Rico, August 2019
Julieta M. Gómez-Fragoso
2021, Scientific Investigations Map 3471
In August 2019, the U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, conducted a bathymetric survey of Lago Patillas to update stage-volume data in order to determine the sediment infill rates and to generate a bathymetry map. Water-depth data were collected along predefined lines using...
Complex sedimentary processes in large coastal embayments and their potential for coastal morphological and paleo tropical cyclone studies: A case study from Choctawhatchee Bay Western Florida, U.S.A
P. N. Ranasinghe, Jeffrey P. Donnelly, R. L. Evans, Jessica R. Rodysill, N. U. Nanayakkara, Peter J. van Hengstum, Andrea D. Hawkes, Richard Sullivan, Michael Toomey
2021, Marine Geology (437)
Storminess and sea-level can both have a significant impact on landforms in cyclone-prone coastal regions, although much of our understanding comes from short-timescale modern observations. This study aims to understand the variability of sediment transport and deposition in the Choctawhatchee Bay/Santa Rosa Island in the northern Gulf of Mexico, establishing the dominant sediment transport...
Maryland and Landsat
U.S. Geological Survey
2021, Fact Sheet 2021-3022
Maryland, called “America in Miniature,” encompasses nearly every geographical feature in the United States except a desert. Water dominates the State, whose borders run along much of Chesapeake Bay. The bay is the country’s largest estuary, where freshwater from watershed tributaries mingles with the ocean’s saltwater and teems with life.The...
New York and Landsat
U.S. Geological Survey
2021, Fact Sheet 2021-3020
From the iconic skyline of New York City to the forested landscapes of the Adirondack Mountains and the countryside of the Allegheny Plateau, the State of New York is overflowing with diversity and life. Bordered by the Atlantic Ocean on the east and two of the Great Lakes to the...
Risk-based decision-support groundwater modeling for the lower San Antonio River Basin, Texas, USA
Linzy K. Foster, Jeremy T. White, Andrew T. Leaf, Natalie A. Houston, Aarin Teague
2021, Groundwater (59) 581-596
A numerical surface-water/groundwater model was developed for the lower San Antonio River Basin to evaluate the responses of low base flows and groundwater levels within the basin under conditions of reduced recharge and increased groundwater withdrawals. Batch data assimilation through history matching used a simulation of...
Finding the win-win strategies in endangered species conservation
Sarah J. Converse, Hannah A. Sipe
2021, Animal Conservation (24) 161-162
No abstract available. ...
History of Great Salt Lake, Utah, USA: Since the termination of Lake Bonneville
Charles G. Oviatt, Genevieve Atwood, Robert S. Thompson
2021, Book chapter, Limnogeology: Progress, challenges and opportunities: A tribute to Elizabeth Gierlowski-Kordesch
During the past half century or so diverse histories of Great Salt Lake have been written from differing perspectives and all of them have contributed ideas and essential data. The published literature, however, can be confusing and misleading. In this chapter, we review and provide context for a number of...
Diatom record of holocene moisture variability in the San Bernardino Mountains, California, USA.
Scott W. Starratt, Matthew E. Kirby, Kristine Glover
2021, Syntheses in Limnogeology (2) 329-365
Lower Bear Lake, in the San Bernardino Mountains, contains a Holocene paleohydrology record for southern California. The diatom and sediment geochemistry record indicates that the region experienced a wet Early Holocene followed by a gradual decrease in precipitation, which was punctuated by four strong and five weak pluvial episodes. The...
What can commercial fishery data in the Great Lakes reveal about juvenile sea lamprey (Petromyzon marinus) ecology and management?
John B. Hume, Gale A Bravener, Shane Flinn, Nicholas S. Johnson
2021, Journal of Great Lakes Research (47) S590-S603
The Laurentian Great Lakes of North America support a large and profitable freshwater fishery, but one continuously beset by parasitism from the invasive sea lamprey (Petromyzon marinus). Despite being the life stage that inflicts damage to the fishery, therefore necessitating a bi-national control...
Trade-offs between suppression and eradication of sea lampreys from the Great Lake
Jean V. Adams, Oana Birceanu, W. Lindsay Chadderton, Michael L. Jones, Jesse M. Lepak, Titus S Selheimer, Todd B. Steeves, W. Paul Sullivan, Jill Wingfield
2021, Journal of Great Lakes Research (47) S782-S795
Ecosystem managers confronted with newly invasive species may respond with a program of suppression or eradication. Suppression of an invasive species refers to management of a species such that its effect on other biota in the local ecosystem is acceptable....
Insight into the May 2015 summit inflation event at Kīlauea Volcano, Hawai‘i
M. Bemelmans, Elske de Zeeuw-van Dalfsen, Michael Poland, Ingrid A. Johanson
2021, Journal of Volcanology and Geothermal Research (415)
We use ground and space geodetic data to study surface deformation at Kīlauea Volcano from January to September 2015. This period includes an episode of heightened activity in April and May 2015 that culminated in a magmatic intrusion beneath the volcano's...
Predicted climate-induced reductions in scavenging in eastern North America
Courtney J. Marneweck, Todd E. Katzner, David S. Jachowski
2021, Global Change Biology (27) 3383-3394
Scavenging is an important function within ecosystems where scavengers remove organic matter, reduce disease, stabilize food webs, and generally make ecosystems more resilient to environmental changes. Global change (i.e., changing climate and increasing human impact) is currently influencing scavenger communities. Thus, understanding what promotes species richness in scavenger communities can...
Mercury and water level management in lakes of northern Minnesota
James H. Larson, Ryan P. Maki, Victoria Christensen, Enrika Hlavacek, Mark B. Sandheinrich, Jaime F. LeDuc, Claire Kissane, Brent C. Knights
2021, Ecosphere (12)
Water level (WL) fluctuations substantially alter the fauna, flora, and microbial community of nearshore aquatic ecosystems. Water level management therefore has the potential to strongly influence a wide variety of ecosystem processes. Many northern temperate lake food webs experience substantial methylmercury contamination, which is partially mediated by the action of...
Genetic structure and diversity of the endemic Carolina Madtom and conservation implications
W. R. Cope, Thomas J. Kwak, T. R. Black, K. Pacifici, S. C. Harris, C. M. Miller, M. E. Raley, E. M. Hallerman
2021, North American Journal of Fisheries Management (41) S27-S41
Identification and conservation of genetic diversity within and among freshwater fish populations are important to better manage and conserve imperiled species. The Carolina Madtom Noturus furiosus is a small, nongame catfish that is endemic to the Tar and Neuse River basins of North Carolina. Genetic structure has not been studied in the...
Riverine complexity and life history inform restoration in riparian environments in the southwestern U.S.
Emily C. Palmquist, Gerald J Allan, Kiona Ogle, Thomas G. Whitham, Bradley J. Butterfield, Patrick B. Shafroth
2021, Restoration Ecology (29)
Riparian habitat in the southwestern USA has undergone substantial degradation over the past century, prompting extensive management and restoration of these critical ecosystems. Most restoration efforts, however, do not account for life history traits or riverine complexity that may influence genetic diversity and structure. Here, we use simple sequence repeat...
West-wide drought analysis
Subhrendu Gangopadhyay, Gregory J. McCabe, Tom Pruitt, Brandon House
2021, Report, West-Wide Climate and Hydrology Assessment, Technical Memorandum No. ENV-2021-001
This chapter describes analyses of the variability and characteristics of drought for historical and future projected climate conditions across the Western United States. The analyses are performed using the Palmer Drought Severity Index (PDSI; Palmer, 1965) to define drought events. The advantage of using PDSI to define droughts is that...
Radionuclides in surface water and groundwater
Kate M. Campbell, Tyler Kane
2021, Book chapter, Handbook of Water Purity and Quality
Unique among all the contaminants that adversely affect surface- and groundwater quality, radioactive compounds pose a double threat from toxicity and ionizing radiation. The high energy potential of many of these materials makes them both useful and hazardous. The unique properties of...
Sagebrush recovery patterns after fuel treatments mediated by disturbance type and plant functional group interactions
Jeanne C. Chambers, Alexandra K. Urza, David I. Board, Richard F. Miller, David A. Pyke, Bruce A. Roundy, Eugene W. Schupp, Robin J. Tausch
2021, Ecosphere (12)
Fire and fuel management is a high priority in North American sagebrush ecosystems where the expansion of piñon and juniper trees and the invasion of nonnative annual grasses are altering fire regimes and resulting in loss of sagebrush species and habitat. We evaluated 10-yr effects of woody fuel treatments on...
Hydrologic effects on growth and hatching success of age-0 Channel Catfish in the Tallapoosa River basin: Implications for management in regulated systems
Keith A. Erickson, Peter C. Sakaris, Hannah Conner, Elise R. Irwin
2021, North American Journal of Fisheries Management (41) S118-S132
We assessed the effects of hydrology on growth and hatching success of age‐0 Channel Catfish Ictalurus punctatus in regulated and unregulated reaches of the Tallapoosa River basin, Alabama. Age‐0 Channel Catfish (N = 91) were collected from sites in both the Coastal Plain and Piedmont regions in fall 2003 and fall 2005. Lapillus...
