Map of the approximate inland extent of saltwater at the base of the Biscayne aquifer in Miami-Dade County, Florida, 2018
Scott T. Prinos
2019, Scientific Investigations Map 3438
The inland extent of saltwater at the base of the Biscayne aquifer in eastern Miami-Dade County, Florida, was mapped in 2011, and it was mapped in the Model Land Area in 2016. The saltwater interface has continued to move inland in some areas and is now near several active well...
Growth drivers of Bakken oil well productivity
Emil D. Attanasi, Philip A. Freeman
2019, Natural Resources Research (29) 1471-1486
This paper identifies the drivers of the phenomenal growth in productivity in hydraulically fractured horizontal oil wells producing from the middle member of the Bakken Formation in North Dakota. The data show a strong underlying spatial component and somewhat weaker temporal component. Drivers of the spatial component are favorable...
Geologic cross section A–A′ through the Appalachian basin from the southern margin of the Ontario Lowlands province, Genesee County, western New York, to the Valley and Ridge province, Lycoming County, north-central Pennsylvania
Michael H. Trippi, Robert T. Ryder, Catherine B. Enomoto
2019, Scientific Investigations Map 3425
IntroductionGeologic cross section A–A′ is the fifth in a series of cross sections constructed by the U.S. Geological Survey (USGS) to document and improve understanding of the geologic framework and petroleum systems of the Appalachian basin. Cross section A–A′ provides a regional view of the structural and stratigraphic framework of the Appalachian...
Characterization and evaluation of controls on post-fire streamflow response across western U.S. watersheds
Samuel Saxe, Terri S. Hogue, Lauren E. Hay
2019, Hydrology and Earth System Sciences (22) 1221-1237
This research investigates the impact of wildfires on watershed flow regimes, specifically focusing on evaluation of fire events within specified hydroclimatic regions in the western United States, and evaluating the impact of climate and geophysical variables on response. Eighty-two watersheds were identified with at least 10 years of continuous pre-fire...
Temperature thresholds for black mangrove (Avicennia germinans) freeze damage, mortality, and recovery in North America: Refining tipping points for range expansion in a warming climate
Michael Osland, Richard Day, Courtney T. Hall, Laura Feher, Anna R. Armitage, Just Cebrian, Kenneth H. Dunton, Randall Hughes, David Kaplan, Amy K. Langston, Aaron Macy, Carolyn A. Weaver, Gordon H. Anderson, Karen Cummins, Ilka C. Feller, Caitlin M. Snyder
2019, Journal of Ecology (108) 654-665
Near the tropical‐temperate transition zone, warming winter temperatures are expected to facilitate the poleward range expansion of freeze‐sensitive tropical organisms. In coastal wetlands of eastern and central North America, freeze‐sensitive woody plants (mangroves) are expected to expand northward into regions currently dominated by freeze‐tolerant herbaceous salt marsh plants. To advance...
Geologic map of the Poncha Pass area, Chaffee, Fremont, and Saguache Counties, Colorado
Scott A. Minor, Jonathan Saul Caine, Chester A. Ruleman, Christopher J. Fridrich, Christine F. Chan, Theodore R. Brandt, Christopher S. Holm-Denoma, Leah E. Morgan, Michael A. Cosca, V. J. Grauch
2019, Scientific Investigations Map 3436
This report presents a 1:24,000-scale geologic map, cross sections, and descriptive and interpretative text for the Poncha Pass area in central Colorado. The map area is irregular in shape, covering all of one 7 ½' quadrangle (Poncha Pass) and parts of five others (Mount Ouray, Maysville, Salida West, Salida East,...
Rare earth elements in coal and coal fly ash
Clint Scott, Allan Kolker
2019, Fact Sheet 2019-3048
The rare earth elements (REEs) are a group of 17 elements sharing similar chemical properties. They include yttrium (Y, atomic number 39), scandium (Sc, atomic number 21), and the 15 elements of the lanthanide series, atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu). Because promethium (Pm, atomic number 61)...
Evaluation of chemical and hydrologic processes in the eastern Snake River Plain Aquifer based on results from geochemical modeling, Idaho National Laboratory, eastern Idaho
Gordon W. Rattray
2019, Professional Paper 1837-B
Nuclear research activities at the U.S. Department of Energy (DOE) Idaho National Laboratory (INL) produced liquid and solid chemical and radiochemical wastes that were disposed to the subsurface resulting in detectable concentrations of some waste constituents in the eastern Snake River Plain (ESRP) aquifer. These waste constituents may affect the...
Monarch habitat as a component of multifunctional landscape restoration using continuous riparian buffers
Darius J. Semmens, Zachary H. Ancona
2019, Frontiers in Environmental Science (7)
Stabilizing the eastern, migratory population of monarch butterflies (Danaus plexippus) is expected to require substantial habitat restoration on agricultural land in the core breeding area of the Upper Midwestern U.S. Previous research has considered the potential to utilize marginal land for this purpose because of its low productivity, erodible soils,...
Controls on spatial and temporal variations of brine discharge to the Dolores River in the Paradox Valley, Colorado, 2016–18
M. Alisa Mast, Neil Terry
2019, Scientific Investigations Report 2019-5058
The Paradox Valley in southwestern Colorado is a collapsed anticline formed by movement of the salt-rich Paradox Formation at the core of the anticline. The salinity of the Dolores River, a tributary of the Colorado River, increases substantially as it crosses the valley because of discharge of brine-rich groundwater derived...
Influenza A virus detected in native bivalves in waterfowl habitat of the Delmarva Peninsula, USA
Christine L. Densmore, Deborah D. Iwanowicz, Shawn M. McLaughlin, Christopher Ottinger, Jason E. Spires, Luke R. Iwanowicz
2019, Microorganisms (7)
We evaluated the prevalence of influenza A virus (IAV) in different species of bivalves inhabiting natural water bodies in waterfowl habitat along the Delmarva Peninsula and Chesapeake Bay in eastern Maryland. Bivalve tissue from clam and mussel specimens (Macoma balthica, Macoma phenax, Mulinia sp., Rangia cuneata, Mya arenaria, Guekensia demissa,...
Effects of distribution, behavior, and climate on mule deer survival
Elizabeth M. Schuyler, Katie Dugger, Dewaine H. Jackson
2019, Journal of Wildlife Management (83) 89-99
Mule deer (Odocoileus hemionus hemionus) populations in North America are a valuable economic wildlife resource, with the managed harvest of this species reflecting societal values and recreational opportunities in many parts of the western United States. Managing mule deer populations while allowing for harvest requires an...
Numerical model simulations of potential changes in water levels and capture of natural discharge from groundwater withdrawals in Snake Valley and adjacent areas, Utah and Nevada
Melissa D. Masbruch
2019, Open-File Report 2019-1083
The National Park Service (NPS) and the Bureau of Land Management (BLM) are concerned about cumulative effects of groundwater development on groundwater-dependent resources managed by, and other groundwater resources of interest to, these agencies in Snake Valley and adjacent areas, Utah and Nevada. Of particular concern to the NPS and...
Restoring a forest icon: Could returning the American chestnut remodel our wildlife landscape?
Staci L Clark, Scott E. Schlarbaum, Joseph D. Clark
2019, The Wildlife Professional (13) 52-56
Mother Nature was not making it easy. It was February 18, 2009, and winds were gusting, sleet was falling, and temperatures were hovering around 40° F. Our crew of 9 which consisted of personnel from the USDA Forest Service Southern Research Station, the Cherokee National Forest, and The University of...
Site response in the Oklahoma region from seismic recordings of the 2011 Mw 5.7 Prague earthquake
C. Mendoza, Stephen H. Hartzell
2019, Seismological Research Letters (90) 2015-2027
We invert the shear-wave displacement spectra obtained from 30 three-component, broadband waveforms recorded within 300 km of the 6 November 2011 Mw 5.7 Prague, Oklahoma earthquake to recover the site-response contribution using an inversion method that simultaneously inverts for source, path, and site effects. Site-response functions identify resonant frequencies within...
Water velocity regulates macro-consumer herbivory on the benthic macrophyte Podostemum ceratophyllum Michx.
James L Wood, Jon W Skaggs, Caitlin C Conn, Mary Freeman
2019, Freshwater Biology (64) 2037-2045
1) Macrophytes influence aquatic ecosystems by increasing habitat complexity and providing trophic resources for aquatic fauna. While herbivory on freshwater macrophytes is widely documented in lakes, low-velocity riverine habitats, the influence of herbivory on macrophytes in higher-velocity habitats has rarely been examined. 2) We investigated the hypothesis that high...
Characterizing and imaging sedimentary strata using depth-converted spectral ratios: An example from the Atlantic Coastal Plain of the Eastern U.S.
Thomas L. Pratt
2019, Bulletin of the Seismological Society of America (108) 2801-2815
Unconsolidated, near-surface sediments can have a profound influence on the amplitudes and frequencies of ground shaking during earthquakes, and these effects should be accounted for when using amplitude observations for seismic hazard assessments. This study explores methods to use teleseismic arrivals recorded on linear receiver arrays to characterize widespread, shallow...
Arsenic, antimony, mercury, and water temperature in streams near Stibnite mining area, central Idaho, 2011–17
Austin K. Baldwin, Alexandra B. Etheridge
2019, Scientific Investigations Report 2019-5072
Mineralization and historical mining of stibnite (antimony sulfide), tungsten, gold, silver, and mercury in the headwaters of the East Fork of the South Fork Salmon River (EFSFSR) near the former town of Stibnite in central Idaho resulted in water-quality impairments related to mercury, antimony, and arsenic. Additionally, mining-related disturbances and...
Hydrologic balance, water quality, chemical-mass balance, and geochemical modeling of hyperalkaline ponds at Big Marsh, Chicago, Illinois, 2016–17
Amy M. Gahala, Robert R. Seal, II, Nadine M. Piatak
2019, Scientific Investigations Report 2019-5078
Hyperalkaline (pH greater than 12) ponds and groundwater exist at Big Marsh near Lake Calumet, Chicago, Illinois, a site used by the steel industry during the mid-1900s to deposit steel- and iron-making waste, in particular, slag. The hyperalkaline ponds may pose a hazard to human health and the environment. The...
The hydrologic benefits of wetland and prairie restoration in western Minnesota—Lessons learned at the Glacial Ridge National Wildlife Refuge, 2002–15
Timothy K. Cowdery, Catherine A. Christenson, Jeffrey R. Ziegeweid
2019, Scientific Investigations Report 2019-5041
Conversion of agricultural lands to wetlands and native prairie is widely viewed as beneficial because it can restore natural ecological and hydrologic functions. Some of these functions, such as reduced peak flows and improved water quality, are often attributed to restoration; however, such benefits have not been quantified at a...
Topographic changes during the 2018 Kīlauea eruption from Single-pass Airborne InSAR
Paul R Lundgren, Marco Bagnardi, Hannah R. Dietterich
2019, Geophysical Research Letters (46) 9554-9562
The 2018 eruption of Kīlauea volcano, Hawai‘i, was its most effusive in over 200 years. We apply the airborne Glacier and Ice Surface Topography Interferometer (GLISTIN‐A) interferometric synthetic aperture radar (InSAR) instrument to measure topographic change associated with the eruption. The GLISTIN‐A radar flew in response to the eruption, acquiring...
Case study: Thomas Fire
Jason R. Kreitler, Amy E. East, Joel B. Sankey, Christina (Naomi) Tague
2019, Report, California's Fourth Climate Change Assessment
No abstract available....
A space-time geostatistical model for probabilistic estimation of harmful algal bloom biomass and areal extent
Shiqi Fang, Dario Del Giudice, Donald Scavia, Caren E. Binding, Thomas B. Bridgeman, Justin D. Chaffin, Mary Anne Evans, Joseph Guinness, Thomas H. Johengen, Daniel R Obenour
2019, Science of the Total Environment (695)
Harmful algal blooms (HABs) have been increasing in intensity across many waterbodies worldwide, including the western basin of Lake Erie. Substantial efforts have been made to track these blooms using in situ sampling and remote sensing. However, such measurements do not fully capture HAB spatial and temporal dynamics due to...
Molecular identification of fecal contamination in the Elks Run Watershed, Jefferson County, West Virginia, 2016–17
W. Bane Schill, Deborah D. Iwanowicz
2019, Open-File Report 2019-1064
The U.S. Geological Survey conducted a study using modern methods of molecular analysis aimed at attempting to identify the source(s) of fecal contamination that had been identified in previous studies conducted by the West Virginia Conservation Agency in the Elk Run watershed, Jefferson County, West Virginia. Water samples from multiple...
Airborne radiometric maps of Mountain Pass, California
David A. Ponce, Kevin M. Denton
David A. Ponce, editor(s)
2019, Scientific Investigations Map 3412-C
Geophysical investigations of Mountain Pass and vicinity were begun as part of an effort to study regional crustal structures as an aid to understanding the geologic framework and mineral resources of the eastern Mojave Desert. The study area encompasses Mountain Pass, host to one of the world’s largest rare earth...
