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Filters Contacts (Less) Alaska Science Center U.S. Geological Survey - ScienceBase U.S. Geological Survey Jean M Self-Trail Ecosystems U.S. Geological Survey Heather L Walsh Margaret M Lamont Carson L Arends Andrew R Bock Energy and Minerals GS ScienceBase Marilyn Santiago Mark Rowe Pengfei Xue Spencer T. Gardner Vanessa R von Biela Laura E Hubbard Bronwen Wang David Bunnell Susan Butler Andrew Reeves Ecosystems Eastern Ecological Science Center Florence Bascom Geoscience Center Great Lakes Science Center Gregory S Gohn Matthew Granitto Keith A Labay Sarah M Laske Mercer Parker Alan L Pongratz Stephanie E Gordon Wetland and Aquatic Research Center Christina A Ahlstrom Ashley E Stanek Joseph A Alday Laura C Scott Kristina F Gardner Andy M Ramey Vicki S Blazer Paul V Schauer Daniel H Slone Alinde Fojtik David E. Stallknecht David L Blodgett Deborah L. Carter Devendra Dahal Devendra Dahal (CTR) Dinesh (Contractor) Shrestha More... View Results as: JSON ATOM CSV

Selected Whole-Rock and Sediment Geochemistry Reanalysis Data Additions to the Alaska Geochemical DataBase (AGDB) from Archived Samples, Alaska This data release contains elemental concentration data from the reanalysis of 13,930 archived stream-sediment sample and associated stream sediment reference material and 968 archived rock samples and associated rock reference material. All archived material was from samples that were collected in Alaska. Samples were retrieved from the USGS Mineral Program's sample archive in Denver, CO. Sample processing consisted of splitting the appropriate aliquot for the requested analyses. Sample splitting was performed in the USGS Mineral Program's sample prep facilities. 13,800 samples were analyzed using a multi-element analytical method involving decomposition of the sample by sodium peroxide and elemental analysis by... Categories: Data; Tags: Alaska, Alaska Range, Aleutian Islands, Aleutian Range, Alexander Archipelago, All tags... Bering Sea, Brooks Range, Chugach Mountains, Geochemistry, Gulf of Alaska, Kuskokwim Mountains, Mineral Resources, Seward Peninsula, USGS Science Data Catalog (SDC), United States, Wrangell Mountains, aluminum, antimony, arsenic, barium, beryllium, boron, cadmium, calcium, cerium, cesium, chemical analysis, chromium, cobalt, copper, dysprosium, earth science, earth sciences, erbium, europium, ferric iron, ferrous iron, gadolinium, gallium, geochemistry, geochemistry, geoscientificInformation, germanium, gold, hafnium, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, mercury, mineral resources, mineralogy, molybdenum, neodymium, nickel, niobium, palladium, potassium, praseodymium, rhenium, rubidium, samarium, scandium, selenium, silicon, silver, sodium, strontium, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags National Hydrologic Geospatial Fabric Reference and Derived Hydrofabrics "The data you have secured from the U.S. Geological Survey (USGS) database identified as National Hydrologic Geospatial Fabric Reference and Derived Hydrofabrics have not received USGS approval and as such are provisional and subject to revision. The data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use." "Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such... Categories: Data, Data Release - In Progress; Tags: Canada, Geographic Information Systems, Hydrologic Response Units, Hydrologic modeling, Points of Interest, All tags... Routing Network, USGS:5e29b87fe4b0a79317cf7df5, United States, geoscientificInformation, inlandWaters, Fewer tags Microfossil, grain size, and petrographic data for the Cabin Branch and Cabin Creek (Cappy Avenue) outcrops, Prince George's County, Maryland The Cabin Branch and Cabin Creek (Cappy Avenue) outcrops are located along two small creeks in Prince George’s County, Maryland. The Cabin Branch outcrop contains exposures of silty sands of the Upper Cretaceous Severn Formation, and both outcrops contain Paleocene silty quartz and glauconitic sands of the Danian Brightseat Formation and highly fossiliferous glauconitic quartz sands of the Selandian Aquia Formation. Data from these two locations were generated in order to designate a Principal Reference Section for the Danian age Brightseat Formation. The Cabin Branch outcrop consists of disjunct exposures along an approximately 0.4-mile section of the creek. At the nearby Cabin Creek (Cappy Avenue) outcrop a more... Categories: Data; Tags: Aquia Formation, Brightseat Formation, Cenozoic, Cretaceous, Danian, All tags... Maastrichtian, Maryland, Mesozoic, Mid-Atlantic Coastal Plain, Paleocene, Paleogene, Prince George's, Salisbury Embayment, Sedimentology, Selandian, Severn Formation, Stratigraphy, Tertiary, Thanetian, USGS Science Data Catalog (SDC), biostratigraphy, biota, calcareous nannoplankton, coastal zones, continental margins, faunal and floral census (microscopic), foraminiferans, fossils, geoscientificInformation, lithostratigraphy, micropaleontology, ostracodes, petrography, protists, sediment, sediment analysis, sediment deposition, sedimentology, stratigraphic sections, stratigraphic thickness, Fewer tags Water Chemistry and Smallmouth Bass Biological Data from Pine Creek and West Branch Mahantango Creek, Pennsylvania, 2015-2019 (In Press) Monitoring wild fish health and associated exposure effects in regions where agriculture and development have impacted rivers and streams has become a valuable research tool. Smallmouth bass (Micropterus dolomieu) are a sensitive, indicator species that exhibit symptoms of immunosupression and endocrine disruption in response to water quality changes and contaminant exposure. In the Susquehanna River drainage, smallmouth bass have been used in biomonitoring assessments to help understand changes in the population due to poor young-of-the-year recruitment and health effects. To help determine effects of agriculture and development on smallmouth bass health, two sites (a developed/agriculture site and a forested site)... Categories: Data; Tags: Aquatic Biology, Chesapeake Bay Drainage, Ecology, Pennsylvania, Pine Creek, All tags... Susquehanna River Drainage, USGS Science Data Catalog (SDC), West Branch Mahantango Creek, biota, condition factor, contaminants, health assessment index, hepatic gene transcripts, hepatosomatic index, land use, macrophage aggregates, parasites, wild fish health, Fewer tags Sounding Cross Section Surveys at Alaska Bridge Crossings Since 1993 the U.S. Geological Survey (USGS) has worked with the Alaska Department of Transportation and Public Facilities (ADOT&PF) to provide hydraulic assessments of scour for bridges throughout Alaska. As part of this effort, repeat channel cross section surveys, or channel soundings, have been collected at either the upstream or downstream side of bridges on an annual or as needed basis. Streambed and bank elevations are measured using USGS sounding weights and reels, weighted measuring tapes, acoustic Doppler current profilers, multibeam echo sounders and light detection and ranging and are referenced to the datum of as-built plan set to provide context for the streambed elevations in relation to bridge structures.... Categories: Data; Tags: ADCP, Acoustic Doppler Current Profiling, Alaska, Bridges, Discharge/flow, All tags... Geomorphology, Hydrology, Hydrology, InlandWaters, Rivers/streams, Scour, Streambed, Terrestrial Hydrosphere, USGS Science Data Catalog (SDC), Water Resources, Fewer tags Data for Infectivity of Wild-Bird Origin Influenza A Viruses in Minnesota Wetlands Across Seasons This data set represents an ecological and laboratory-based experiment to understand influenza virus viability in surface water. Data tables included in this release consist of 1) daily mean water temperature, 2) viability of viruses maintained in water, 3) influenza detection in duck samples, 4) viral titers of experimentally inoculated water samples, and 5) water chemistry. Categories: Data; Tags: Agassiz National Wildlife Refuge, Animal disease, Animal diseases/disorders/pests, Animals/vertebrates, Aquatic Biology, All tags... Avian influenza, Biota, Birds, Disease reservoirs, Disease/epidemic, Ducks/geese/swans, Environment, Environmental Health, Freshwater ecosystems, Genetics, Health, Health and disease, Influenza A virus, Lakes/reservoirs, Migratory birds, Minnesota, Persistence, Roseau River Wildlife Management Area, USGS Science Data Catalog (SDC), Virus Diseases, Viruses, Waterfowl, Wildlife, Wildlife Biology, Wildlife Disease, Wildlife disease, Fewer tags Water Temperature, Electrical Conductivity, and Salinity of Lagoons in the Beaufort Sea, Alaska, 2017-2019 This dataset contains a table with temperature (°C), raw electrical conductivity (μS/cm), and salinity (psu) measured in Beaufort Sea, Alaska, Lagoons during summers 2017-2019. Categories: Data; Tags: Alaska, Beaufort Sea, Coastal ecosystems, Environment, Estuarine habitat, All tags... Intertidal environments, Jago Lagoon, Kaktovik Lagoon, Marine ecosystems, Oceans, Salinity, Simpson Lagoon, Stefansson Sound, USGS Science Data Catalog (SDC), Water conductivity, Water temperature, Water temperature, Fewer tags Simulations of larval fish transport and environmental conditions in Lake Michigan Data files contain the simulated mean daily environmental conditions experienced by particles (which can be assumed to be planktonic larval alewife or yellow perch) in Lake Michigan during March 15 - July 31 of past and future years. Simulations were generated by integrating a series of climatic, hydrodynamic, biogeochemical, and Lagrangian particle dispersion (LPD) models. For each year, 42,765 particles (i.e., each representing a theoretical larval fish) were released from coastal and nearshore locations and tracked sub-hourly for 50-days following their release. Each year's dataset summarizes individual particle experiences (e.g., light, zooplankton prey, temperature) into daily averages. Categories: Data, Data Release - In Progress; Tags: Environmental Health, Lake Michigan, USGS Science Data Catalog (SDC), biological and physical processes, early life history, All tags... ecosystem model, environment, match-mismatch, physical processes, recruitment, Fewer tags High Priority Shoreline The objective of this project was to create a shoreline inventory for Hawai‘i Island, the largest and most diverse island in the Hawaiian archipelago. This was done via the collection and processing of high-resolution (<4 cm) aerial imagery along the approximately 428 km long shoreline of Hawai‘i Island using a helicopter-mounted imaging system developed by the University of Hawai‘i at Hilo Spatial Data Analysis & Visualization (SDAV) research laboratory. The collected imagery is supplemented by survey-grade ground control data gathered across a limited number of high priority coastline segments, which were determined in coordination with the Hawai‘i County planning department and land managers. These data represent... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hawaii Island, aerial photography, biota, geospatial datasets Early Estimates of Exotic Annual Grass (EAG) in the Sagebrush Biome, USA, 2024 (ver. 3.0, April 2024) These datasets provide early estimates of 2024 fractional cover for exotic annual grass (EAG) species and one native perennial grass species on a weekly basis from April to late June. Typically, the EAG estimates are publicly released within 7-13 days of the latest satellite observation used for that version. Each weekly release contains five fractional cover maps along with their corresponding confidence maps for: 1) a group of 16 species of EAGs, 2) cheatgrass (Bromus tectorum); 3) Field Brome (Bromus arvensis); 4) medusahead (Taeniatherum caput-medusae); and 5) Sandberg bluegrass (Poa secunda). These datasets were generated leveraging field observations from Bureau of Land Management (BLM) Assessment, Inventory,... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Arizona, California, Colorado, Field Brome, Great Basin, All tags... Harmonized Landsat Sentinel, Idaho, Kansas, Montana, NDVI, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, Poa secunda, South Dakota, Texas, Texas brome, United States, Utah, Washington, Wyoming, annual grass, annual herbaceous, cheatgrass, exotic, https://doi.org/10.5066/P1Y5TZBM, invasive species, medusahead, nonindigenous species, noxious, perennial grass, red brome, remote sensing, rye brome, sagebrush, soft brome, western United States, Fewer tags Loggerhead Iridium Locations in Northwest Florida 2019-2021 This dataset is comprised of times, locations, and water temperatures collected from iridium satellite tags attached to 11 loggerhead sea turtles between 2019 and 2021. Categories: Data; Tags: Gulf of Mexico, Remote Sensing, USGS Science Data Catalog (SDC), Wildlife Biology, biota, All tags... iridium, remote sensing, sea turtles, Fewer tags