Filters: Tags: {"type":"Theme"} (X) > Date Range: {"choice":"day"} (X)
Folders: ROOT > Users ( Show direct descendants )
13 results (399ms)
Location
Folder
ROOT _Users Filters
Date Types (for Date Range)
Types Contacts
Categories Tag Schemes
|
These data are comprised of beryllium-7 (7Be) and excess lead-210 (210Pbxs) activity for fine-grained, mobile, streambed sediment at seven reaches in the Little Flatrock Creek stream-channel network. This basin is monitored in cooperation with the Ohio Department of Natural Resources. During the period July 26-27, 2019 (summer low flow), the thickness and spatial extent of soft, mobile, fine-grained (mainly silt and clay) streambed sediment was inventoried and sampled along 150-meter (m) transects. A combination of stream corridor land-use distribution, valley type, channel slope, and stream order (Strahler, 1957) was used to select 15 rapid geomorphic assessment reaches using methods of Fitzpatrick and others (2016);...
The survey was conducted to assess the distribution of terrapins in the Chesapeake Bay, based on evidence related to nesting. We conducted a survey of the beaches during the nesting season in the summer of 2002. We walked along the shoreline of over 1350 beach segments looking for evidence signifying the presence of terrapins based on nesting activity. These results represent a single-season snapshot of conditions during the surveys and at the locations visited during that season; it should not be assumed that this is representative of terrapin nest locations and numbers today.
Coastal shorelines commonly have recurring patterns of retreat and recovery that are related to annual patterns in wave climate. To assist with investigations of these seasonal cycles, we have analyzed shoreline position and wave data for the beaches of California to generate a series of metrics that describe the magnitude and timing of seasonal patterns of the shoreline and offshore wave climate. These data should be useful for science researchers, students, policy makers, and the public. The data can be used with geographic information systems or other software to help identify characteristics and patterns in California’s shoreline. The seasonal cycles in California’s shoreline were derived from time-series analyses...
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Geomorphology,
Marine Geology,
PCMSC,
In cooperation with the Georgia Department of Transportation, the U.S. Geological Survey (USGS) has prepared geospatial layers representing the locations of USGS streamgages, other weather monitoring locations, and upstream drainage basins of streamgages in the State of Georgia. These layers also include streamgages in nearby states which directly measure waters within Georgia. The streamgages have attributes describing their location, elevation, parameters measured, peak flow information, flood frequency region percentage, land cover characteristics, and distance to nearest other streamgage.
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Alabama,
Florida,
Georgia,
Hydrology,
South Carolina,
This data release contains multiple data layers and describes the processing steps associated with the U.S. Geological Survey Professional Paper 1900 "Prospectivity Mapping for Geologic Hydrogen". The data comprise the geologic and geophysical inputs used in support of the U.S. Geological Survey's efforts to create the first map of geologic hydrogen prospectivity within the U.S. The maps are based on our understanding of the geologic hydrogen system model, which includes three primary components: 1) a source of natural hydrogen, 2) a reservoir to store hydrogen in the subsurface, and 3) a competent seal to retain the hydrogen and prevent leakage to the Earth’s surface. Collectively, the data release includes 44...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Conterminous United States,
Economic Geology,
Energy Resources,
Geologic hydrogen,
Hydrogen prospectivity mapping,
The geochemical data included here were generated as part of the Earth Mapping Resources Initiative (Earth MRI), which was developed by the U.S. Geological Survey (USGS) in response to a Federal directive calling on various Federal agencies to address potential vulnerabilities in the Nation’s supply of critical mineral resources. Earth MRI is a partnership between the USGS, State Geological Surveys, and industry coordinating with other federal agencies to accomplish the mission. The primary purpose of this initiative is to identify potentially mineralized areas containing critical minerals by gathering new basic geologic data about the United States and its territories and to make these data publicly available through...
Geochemical data were generated from multiple thermally immature drill cores of the Eagle Ford Group across Texas. This data set accompanies a journal article that shows the relationship between whole rock S/Fe and degree of organic sulfurization across the thermally immature Eagle Ford in Texas. The data include LECO total carbon and total organic carbon, programmed pyrolysis, whole rock elemental chemistry, kerogen elemental chemistry, and XRD mineralogy, as well as parameters calculated from measured values.
Categories: Data;
Tags: Cenomanian-Turonian,
Cretaceous Western Interior Seaway,
Eagle Ford Group,
Energy Resources,
Gulf Coast Basin,
We present a preliminary point inventory of landslides triggered by Hurricane Helene, which impacted southern Appalachia between September 25 and 27, 2024. This inventory is a result of a rapid response mapping effort led by the U.S. Geological Survey’s Landslide Assessments, Situational Awareness, and Event Response Research (LASER) project. LASER collaborated with state surveys and landslide researchers to identify landslides and their impacts for situational awareness and emergency response. The area of interest (AOI) for this effort was informed by a preliminary landslide hazard map created for the event (Martinez et al., 2024), and encompasses western North Carolina, as well as parts of Tennessee, Virginia,...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Geomorphology,
Hurricane Helene,
Hydrology,
Remote Sensing,
USGS Science Data Catalog (SDC),
The U.S. Geological Survey in cooperation with the Upper Arkansas Water Conservancy District, created a numerical groundwater-flow model for the Wet Mountain Valley alluvial aquifer using the finite-difference MODFLOW code with the Newton formulation solver. This numerical groundwater-flow model simulates water-budget components, groundwater and surface-water interactions, and evaluates the potential effects of aquifer storage and recovery through an added recharge simulation. The numerical model was spatially discretized into two layers with 261 rows and 133 columns of square cells at 250 meters on each side, for a total of 20,007 active cells. The model was rotated by 36 degrees to the northwest to align with...
In Louisiana, the Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) identifies, prepares, and funds coastal wetland restoration projects. In the Evaluation Report to Congress to be submitted in 2024, geospatially driven visualizations are required to provide conceptual understanding of funded project sizes and locations as they pertain to the geographical region in designated basins, as well as identify key project information and expenditures.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Barataria,
Breton Sound,
CWPPRA,
CWPPRA Task Force,
Calcasieu Sabine,
Identifying how close species are to their current upper thermal limits estimates species sensitivity to climate change (or the species ability to persist in place without changing). Process-based models like the NicheMapR mechanistic niche model (Kearney et al. 2019; https://doi.org/10.1111/ecog.04680) use a mass-balance approach to translate microclimate estimates into individual animal operative body temperatures based on biological traits. Using NicheMapR, we quantified 34 species' warming tolerance, or the difference between species critical thermal maximum and its modelled operative temperature, from 2011 to 2020 across approximately 18% of its range within the southeastern United States. Using available intraspecific...
Categories: Data;
Tags: Ecology,
North America,
USGS Science Data Catalog (SDC),
Wildlife Biology,
amphibians,
Carbon (C) and nitrogen (N) extracted from soil with water are associated with available plant nutrients and microbial activity, but information about how C and N have changed over time in the U.S. Great Plains is sparse. Optical measurements of absorbance and fluorescence were used to compare dissolved organic matter (DOM) extracted from historic (1947) and contemporary (2018) soil samples collected from Moccasin, MT, Akron, CO, and Big Spring, TX. Extracts were prepared at two temperatures (20 and 80 degrees Celsius) associated with different DOM pools to evaluate changes to soil DOM composition after 71 years of dryland farming practices. Together, water extracts and subsequent optical methods can produce insights...
Categories: Data;
Tags: California,
California Water Science Center,
DOC,
Great Plains,
Land Use Change,
The dataset contains observational records detailing collisions between boats and Florida manatees (Trichechus manatus latirostris). Data include boat speeds, collision locations, and manatee injury outcomes, and are intended for ecological analysis and conservation purposes.
Categories: Data;
Tags: Bayesian analysis,
Boat speed regulation,
Boat zones,
Coastal regions,
Conservation,
|
|
