National strategy for landslide loss reduction
Jonathan W. Godt, Nathan J. Wood, Alice Pennaz, Connor M. Dacey, Benjamin B. Mirus, Lauren N. Schaefer, Stephen L. Slaughter
2022, Open-File Report 2022-1075
Executive SummaryLandslide hazards are present in all 50 States and most U.S. territories, and they affect lives, property, infrastructure, and the environment. Landslides are the downslope movement of earth materials under the force of gravity. They can occur without any obvious trigger. Widespread or severe landslide events are often driven...
CO2 uptake offsets other greenhouse gas emissions from salt marshes with chronic nitrogen loading
Serena Moseman-Valtierra, Katelyn Szura, Meagan J. Eagle, Carol Thornber, Faming Wang
2022, Wetlands (42)
Coastal wetlands are known for exceptional productivity, but they also receive intense land-based nitrogen (N) loading. In Narragansett Bay, RI (USA), coastal ecosystems have received anthropogenic N inputs from wastewater for more than two centuries. Greenhouse gas fluxes were studied throughout a growing season (2016) in...
Modeling of fire spread in sagebrush steppe using FARSITE: An approach to improving input data and simulation accuracy
Samuel J. Price, Matthew J. Germino
2022, Fire Ecology (18)
Background: Model simulations of wildfire spread and assessments of their accuracy are needed for understanding and managing altered fire regimes in semiarid regions. The accuracy of wildfire spread simulations can be evaluated from post hoc comparisons of simulated and actual wildfire perimeters, but this requires information on pre-fire vegetation fuels...
Assessment of undiscovered conventional oil and gas resources of the Volga-Ural Basin and Timan-Pechora Basin Provinces of Russia, 2020
Christopher J. Schenk, Tracey J. Mercier, Geoffrey S. Ellis, Cheryl A. Woodall, Thomas M. Finn, Marilyn E. Tennyson, Phuong A. Le, Heidi M. Leathers-Miller, Ronald M. Drake II
2022, Fact Sheet 2022-3070
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 4.9 billion barrels of oil and 21 trillion cubic feet of gas within the Volga-Ural Basin Province and technically recoverable mean conventional resources of 1.8 billion barrels of oil and 9.5 trillion cubic...
Hydrologic and environmental thresholds in stream fish assemblage structure across flow regimes
John Tyler Fox, Daniel D. Magoulick
2022, Ecological Indicators (144)
The characteristic pattern of variation in flow magnitude, frequency, duration, timing, and rate of change defines the flow regime of rivers and streams and is a key driver of ecosystem processes in fluvial ecosystems. Understanding how freshwater biotic assemblages change across gradients of hydrology and anthropogenic-source disturbance in different streamflow...
Field investigation of sub-isokinetic sampling by the US D-96-type suspended-sediment sampler and its effect on suspended-sediment measurements
Thomas A. Sabol, David J. Topping, Ronald E. Griffiths, Guillaume Dramais
2022, Open-File Report 2022-1077
Collection of accurate suspended-sediment data using depth-integrating samplers requires that they operate isokinetically, that is, that they sample at the local stream velocity unaffected by the presence of the suspended-sediment sampler. Sub-isokinetic suspended-sediment sampling causes grain-size dependent positive biases in the suspended-sediment concentration measured by the suspended-sediment sampler. Collapsible bag...
Pharmaceuticals and personal care products in passive samplers at seven coastal sites off West Maui, Hawaiʻi:
Pamela L. Campbell, Nancy G. Prouty, Curt D. Storlazzi
2022, Open-File Report 2022-1065
Passive membrane samplers—semipermeable membrane devices and polar organic chemical integrative samplers—were deployed for 22 continuous days at 7 sites along the West Maui, Hawaiʻi, coastline in February and March 2017 to assess organic contaminants at shallow coral reef ecosystems from diverse upstream inputs. The distribution of organic compounds observed at...
The influence of soil development on the depth distribution and structure of soil microbial communities.
Mary-Catherine Leewis, Corey Lawrence, Marjorie S. Schulz, Malak M. Tfaily, Christian Orlando Ayala-Ortiz, Gilberto E. Flores, Rachel Mackelprang, Jack McFarland
2022, Soil Biology and Biochemistry (174)
Although it has been shown that the interaction of climate and time shape the dynamics of soil organic matter (SOM) storage and preservation in soil, the role of soil microbial communities in this dynamic remains unclear. Microbial communities are present throughout soil profiles and likely play critical roles in SOM...
Spatial distribution and physicochemical properties of respirable volcanic ash from the 16-17 August 2006 Tungurahua eruption (Ecuador), and alveolar epithelium response in-vitro
Julia Eychenne, Lucia Gurioli, David Damby, Corinne Belville, Federica Schiavi, Geoffroy Marceau, Claire Szczepaniak, Christelle Blavignac, Mickael Laumonier, Emmanuel Gardes, Jean-Luc Le Pennec, Jean-Marie Nedelec, Loic Blanchon, Vincent Sapin
2022, GeoHealth (6)
Tungurahua volcano (Ecuador) intermittently emitted ash between 1999 and 2016, enduringly affecting the surrounding rural area and its population, but its health impact remains poorly documented. We aim to assess the respiratory health hazard posed by the 16–17 August 2006 most intense eruptive phase of Tungurahua. We mapped the spatial...
Understanding the role of initial soil moisture and precipitation magnitude in flood forecast using a hydrometeorological modelling system
Dongxiao Yin, George Xue, Daoyang Bao, Arezoo RafieeiNasab, Yongjie Huang, Mirce Morales, John C. Warner
2022, Hydrological Processes (36)
We adapted the WRF-Hydro modelling system to Hurricane Florence (2018) and performed a series of diagnostic experiments to assess the influence of initial soil moisture and precipitation magnitude on flood simulation over the Cape Fear River basin in the United States. Model results suggest that: (1)...
Identifying shared priorities for a bioregional approach to restoration in the Northern Gulf of Mexico
Kelly G. Guilbeau, Ann C Hijuelos, Stephanie Romanach, Gregory Steyer
2022, Frontiers in Ecology and Evolution (10)
Natural resource management is often challenged with a mismatch between the scale of decision-making and the scale of the biological, ecological, and physical processes that control a system. Bioregional approaches to adaptive management have emerged as an approach to inform natural resource management at ecologically relevant scales and...
Neural net detection of seismic features related to gas hydrates and free gas accumulations on the northern U.S. Atlantic margin
Urmi Majumdar, Nathaniel C. Miller, Carolyn D. Ruppel
2022, Interpretation (10) T785-T806
Bottom-simulating reflections (BSRs) that sometimes mark the base of the gas hydrate stability zone in marine sediments are often identified based on the reverse polarity reflections that cut across stratigraphic layering in seismic amplitude data. On the northern U.S. Atlantic margin (USAM) between Cape...
Establishment of invasive Black Carp (Mylopharyngodon piceus) in the Mississippi River basin: Identifying sources and year classes contributing to recruitment
Gregory W. Whitledge, Patrick T. Kroboth, Duane Chapman, Quinton E. Phelps, Wesley Sleeper, Jennifer Bailey, Jill Jenkins
2022, Biological Invasions (24) 3885-3904
Black Carp (Mylopharyngodon piceus) was imported to the USA to control aquaculture pond snails. This species has escaped captivity and occurs in parts of the Mississippi River, several tributaries, and floodplain lakes, which is concerning due to potential competition with native fishes and predation on...
Drought and water management in ancient Maya society
Tripti Bhattacharya, Samantha Krause, Dan Penny, David Wahl
2022, Progress in Physical Geography: Earth and Environment (47) 189-204
Paleoclimate research in the Maya region of Mesoamerica provides compelling evidence of drought during key periods of cultural transition in Maya society. These include the transition from the Preclassic to the Classic, and from Classic to the Postclassic. Previous research emphasized a causal relationship between drought and...
Discovery of prolactin-like in lamprey: Role in osmoregulation and new insight into the evolution of the growth hormone/prolactin family
Ningping Gong, Diogo Ferreira-Martins, Jessica L. Norstog, Stephen D. McCormick, Mark Sheridan
2022, PNAS (119)
We used a representative of one of the oldest extant vertebrate lineages (jawless fish or agnathans) to investigate the early evolution and function of the growth hormone (GH)/prolactin (PRL) family. We identified a second member of the GH/PRL family in an agnathan, the sea lamprey (Petromyzon marinus). Structural, phylogenetic, and...
Groundwater and surface-water data collection for the Walla Walla River Basin, Washington, 2018–22
Elisabeth T. Fasser, Sarah B. Dunn
2022, Data Report 1163
The semi-arid Walla Walla River Basin (WWRB) spans 1777 square miles in the states of Washington and Oregon and supports a diverse agricultural region as well as cities and rural communities that are partially reliant on groundwater. Historically, surface water and groundwater data have been collected in the WWRB...
Tapwater exposures, effects potential, and residential risk management in Northern Plains Nations
Paul M. Bradley, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Robert Charboneau, Christine Marie George, Ana Navas-Acien, Marcia O’Leary, Reno Red Cloud, Tracy Zacher, Sara E. Breitmeyer, Mary C. Cardon, Christa K. Cuny, Guthrie Ducheneaux, Kendra Enright, Nicola Evans, James L. Gray, David E. Harvey, Michelle L. Hladik, Leslie K. Kanagy, Keith A. Loftin, R. Blaine McCleskey, Elizabeth Medlock-Kakaley, Shannon M. Meppelink, Joshua F. Valder, Christopher P. Weis
2022, Environmental Science and Technology Water (2) 1772-1788
In the United States (US), private-supply tapwater (TW) is rarely monitored. This data gap undermines individual/community risk-management decision-making, leading to an increased probability of unrecognized contaminant exposures in rural and remote locations that rely on private wells. We assessed point-of-use (POU) TW in three northern plains Tribal Nations, where ongoing...
Biosiliceous, organic-rich, and phosphatic facies of Triassic strata of northwest Alaska: Transect across a high-latitude, low-angle continental margin
Julie A. Dumoulin, Katherine J. Whidden, William A. Rouse, Richard O. Lease, Adam Boehlke, Paul O’Sullivan
2022, Book chapter, Understanding the Monterey Formation and similar biosiliceous units across space and time
The Shublik Formation (Middle and Upper Triassic) is a mixed siliciclastic-carbonate-phosphatic unit in northern Alaska. It generated oil found in Prudhoe Bay and other accumulations and is a prospective self-sourced resource play on Alaska’s North Slope. Its distal, deeper-water equivalent—the Otuk Formation—consists largely of radiolarian chert, mudstone, and limestone and...
Density estimation in terrestrial chelonian populations using spatial capture–recapture and search–encounter surveys
J. Andrew Royle, Haley Turner
2022, Journal of Herpetology (56) 341-348
Having an accurate estimate of population size and density is imperative to the conservation of chelonian species and a central objective of many monitoring programs. Capture–recapture and related methods are widely used to obtain information about population size of chelonians. However, classical capture–recapture methods have strict spatial sampling requirements and...
Flopy: The Python interface for MODFLOW
Andrew T. Leaf, Michael N. Fienen
2022, Groundwater (60) 710-712
No abstract available....
Seismic sources in the aleutian cradle of tsunamis
Robert C. Witter, Richard W. Briggs, Tina Dura, Simon E. Engelhart, Alan Nelson
2022, Eos, American Geophysical Union
No abstract available....
A study on the effect of site response on California seismic hazard map assessment
Molly M. Gallahue, Leah Marschall Salditch, Madeleine C. Lucas, James S. Neely, Seth Stein, Norman A. Abrahamson, Tessa Williams, Susan E. Hough
2022, Frontiers in Earth Science: Geohazards and Georisks (10)
Prior studies have repeatedly shown that probabilistic seismic hazard maps from several different countries predict higher shaking than that observed. Previous map assessments have not, however, considered the influence of site response on hazard. Seismologists have long acknowledged the influence of near-surface geology, in particular low-impedance sediment layers,...
Wind turbine wakes can impact down-wind vegetation greenness
James E. Diffendorfer, Melanie K. Vanderhoof, Zachary H. Ancona
2022, Environmental Research Letters (17)
Global wind energy has expanded 5-fold since 2010 and is predicted to expand another 8–10-fold over the next 30 years. Wakes generated by wind turbines can alter downwind microclimates and potentially downwind vegetation. However, the design of past studies has made it difficult to isolate the impact...
Insights on multistage rock avalanche behavior from runout modeling constrained by seismic inversions
Andrew Mitchell, Kate E. Allstadt, David L. George, Jordan Aaron, Scott McDougall, Jeffrey R. Moore, Brian Menounous
2022, Journal of Geophysical Research: Solid Earth (127)
Inversion of low-frequency regional seismic records to solve for a time series of bulk forces exerted on the earth by a landslide (a force-time function) is increasingly being used to infer volumes and dynamics of large, highly energetic landslides, such as rock avalanches and flowslides, and to...
Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain
Mingsong Li, Timothy J. Bralower, Lee R. Kump, Jean Self-Trail, James C. Zachos, William D. Rush, Marci M. Robinson
2022, Nature Communications (13)
The chronology of the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) remains disputed, hampering complete understanding of the possible trigger mechanisms of this event. Here we present an astrochronology for the PETM carbon isotope excursion from Howards Tract, Maryland a paleoshelf environment, on the mid-Atlantic Coastal Plain. Statistical evaluation of variations in...
