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Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Map Service (3) OGC WFS Layer (3) OGC WMS Layer (3) OGC WMS Service (2) Downloadable (1) Shapefile (1) Contacts U.S. Geological Survey - ScienceBase Lesleigh Anderson Geosciences and Environmental Change Science Center U.S. Geological Survey Jeff Pigati More... Categories Project (1) Tag Types Theme (7) Data Attribute (1) Place (8) USGS Scientific Topic Keyword (6) Harvest Set (7) Subject (1) Tag Schemes None (5) USGS (US Geological Survey) (1) USGS Thesaurus, USGS Biocomplexity Thesaurus, Agricultural Library Thesaurus (2) ISO 19115 Topic Category (3) NONE (2) https://www.sciencebase.gov/vocab/category/USGSOrg/ClimateandLandUseChange (1) Coastal and Marine Ecological Classification Standard (1) More... View Results as: JSON ATOM CSV

Water quality, quantity, and gas fluxes of the Upper Mississippi River basin (WY 2012-2016) This product consists of one tabular dataset and associated metadata of water quality information related to rivers, streams, and reservoirs in the Upper Mississippi River watershed between 2012 and 2016. This data release is a part of a national assessment of freshwater aquatic carbon fluxes. Data consist of organic and inorganic carbon related species, carbon dioxide and methane gas fluxes calculated from manual chamber measurements, nitrogen species, carbon isotopes, oxygen isotopes, cations, anions, trace metals, and various in situ measurements including: pH, water temperature, air temperature, barometric pressure, dissolved oxygen, turbidity, fluorescent dissolved organic matter, and specific conductance.... Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Carbon, Fluorescent Dissolved Organic Matter (fDOM), Minnesota, Shingobee, Shingobee Headwaters Aquatic Ecosystems Project, All tags... Shingobee River Headwaters Region, Surface Water Quality, USGS Science Data Catalog (SDC), Upper Mississippi River Basin, Upper Mississippi River Basin Project, WATER QUALITY/WATER CHEMISTRY, Wisconsin, air temperature, alkalinity, aluminum, ammonium, atmospheric carbon dioxide, atmospheric methane, barium, boron, calcium, carbon dioxide (water), carbon dioxide (water), carbon dioxide flux, carbon isotopes, chloride, deuterium, dissolved oxygen, fluorescence index, greenhouse gas flux, hydrophilic organic acid, hydrophobic organic acid, hydrophobic organic neutral, inorganic carbon, magnesium, manganese, methane flux, nitrate, organic carbon, oxygen isotopes, pH (water), potassium, silicon dioxide, sodium, specific conductance, strontium, sulfate, sulfur, total dissolved nitrogen, total iron, transphilic organic acid, turbidity, ultraviolet-visible absorbance, water quality, water temperature, Fewer tags Water chemistry, vertical profiles, phytoplankton and zooplankton counts, and metabolism calculations in the Sacramento River Deep Water Ship Channel 2019 Here we archive data collected during a nitrogen addition field experiment in the Sacramento River Deep Water Ship Channel. Calcium nitrate was added on 8 dates to a segment of the ship channel centered at Navigation Light 74. Prior to and following the nutrient additions, we collected water samples and sensor-based measurements at 7 sites between Navigation Light 70 and 76. Water samples for nutrient analyses were collected in 500 mL High Density Poly Ethylene (HDPE) amber containers from 1 m and 8 m depths using a peristaltic pump. Whole water samples for phytoplankton analysis were collected from 1 m depth in 500 mL clear HDPE containers and immediately preserved with 20 mL of Lugol’s iodine solution (Lugol’s,... Categories: Data; Tags: Sacramento River, Sacramento River Deep Water Ship Channel, Sacramento–San Joaquin Delta, Temperature, West Sacramento, All tags... Zooplankton, carbon, chlorophyll, community composition, conductivity, environment, estuary, light extinction, metabolism, nitrogen, nutrients, oxygen content (water), oxygen isotopes, phosphorus, phytoplankton, plankton, turbidity, water chemistry, water isotopes, water pH, water quality, water quality, water temperature, Fewer tags Data Release for Holocene Paleohydrology from alpine lake sediment, Emerald Lake, Wasatch Plateau of central Utah, USA Holocene sediments at Emerald Lake in central Utah (3090 m a.s.l), document the paleohydroclimatic history of the western Upper Colorado River headwater region. Multi-proxy analyses of sediment composition, mineralogy, and stable isotopes of carbonate (d18O and d13C) show changes in effective moisture for the past ca. 10,000 years at millennial to decadal timescales. Emerald Lake originated as a shallow closed-basin cirque pond during the early Holocene. By ca. 7000 cal yr BP, higher lake levels and carbonate d18O values indicate rising effective moisture and higher proportions of summer precipitation continued at least until ca. 5500 cal yr BP when a landslide entered the lake margin. Between ca. 4500 and 2400... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ecology, Geomorphology, Great Basin, Holocene, Hydrology, All tags... Limnology, Sedimentology, USGS Science Data Catalog (SDC), Upper Colorado, Utah, Wasatch Plateau, high elevation lake, lake level, late Holocene dry period, oxygen isotopes, paleoclimatology, paleohydrology, Fewer tags Isotope analyses (234U/238U, 87Sr/86Sr, δ13C, and δ18O) and U-series disequilibrium ages for speleothem, water, and rock samples associated with Fitton Cave, Buffalo National River, Arkansas, USA This data release contains tabular data (comma-separated-value files) of natural radiogenic isotopes of strontium, uranium, and thorium for samples of modern water, speleothems, associated with Fitton Cave, north central Arkansas, as well as rock that host the cave deposits. In addition, U-series ages (230Th/U dates and model 234U/238U dates) are calculated from those data for subsamples of speleothems. Stable isotopes of oxygen and carbon are reported for a subset of the stalagmite samples. Sample locations and descriptions as well as specific sub-sample imagery and narrative explanations are included as information supporting the analyses. Selected results are depicted as data plots in an accompanying Excel spreadsheet... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Buffalo National River, Fitton Cave, Geochemistry, Geomorphology, All tags... Hydrology, Isotope geochemistry, Newton County, U-series disequilibrium dating, USGS Science Data Catalog (SDC), carbon isotopes, cave deposits, geochronology, oxygen isotopes, speleothems, strontium isotopes, uranium isotopes, Fewer tags Mineralogy, strontium (87Sr/86Sr), oxygen (18O/16O) and carbon (13C/12C) isotope composition, elemental concentrations, and U-Th disequilibrium ages for travertine deposits from various locations in Yellowstone National Park, USA Chemical changes in hot springs, as recorded by thermal waters and their mineral deposits, provide a window into the evolution of Yellowstone’s postglacial hydrothermal system. Travertine precipitated from thermal waters provide a record of chemical changes through time because they can be dated using U-series disequilibrium geochronology. These temporal data, along with measured radiogenic 87Sr/86Sr and stable isotope (carbon and oxygen) compositions and elemental concentrations, allow for the investigation of changes in hydrothermal system chemistry over time. This data release contains analyses conducted on samples of hydrothermal travertine collected from Upper and Lower Geyser Basins and near Madison Junction... Categories: Data; Tags: Climatology, Geochemistry, Hydrology, Travertine, U-Th disequilibrium dating, All tags... USGS Science Data Catalog (SDC), Volcanology, Yellowstone National Park, carbon isotopes, elemental concentrations, geoscientificInformation, isotope geochemistry, mineralogy, oxygen isotopes, strontium isotopes, Fewer tags Data release for Lake levels in a discontinuous permafrost landscape: Late Holocene variations inferred from sediment oxygen isotopes, Yukon Flats, Alaska During recent decades, lake levels in the Yukon Flats region of interior Alaska have fluctuated dramatically. However, prior to recorded observations, no data are available to indicate if similar or more extreme variations occurred during past centuries and millennia. This study explores the history of Yukon Flats lake origins and lake levels for the past approximately 5,500 years from sediment analyses guided by previous work on permafrost extent, thermokarst, and modern isotope hydrology. Sediments dated by 210Pb and AMS radiocarbon indicate stable chronologies following initial lake initiation. Subsequent lithology is autochthonous, and oxygen isotope ratios of endogenic carbonate reflect lake level change at... Categories: Data; Tags: Alaska, Holocene, Land Use Change, USGS Science Data Catalog (SDC), Yukon Flats, All tags... biota, lake sediment, oxygen isotopes, paleoclimate, thermokarst, Fewer tags Data release for Oxygen isotopes of land snail shells in high latitude regions The present study investigates the environmental significance of the oxygen isotopic composition of several modern land snail species collected along two north-to-south transects in Alaska and Scandinavia at latitudes between 60 and 70 °N. We tested the hypothesis that land snail shell δ18O values primarily track precipitation δ18O. The results show that shell δ18O values from Scandinavia were ~5.1‰ enriched in 18O with respect to snails from Alaska, equivalent to differences in precipitation δ18O values between the two regions. Within the Alaskan transect, shell δ18O values increased with observed increasing air temperature and precipitation δ18O, whereas shell δ18O values from Scandinavia did not correlate to... Categories: Data; Tags: Alaska, Climatology, Scandinavia, USGS Science Data Catalog (SDC), calibration, All tags... high latitudes, land snail, oxygen isotopes, paleoclimate, Fewer tags Data release for Late glacial-Younger Dryas climate in interior Alaska as inferred from the isotope values of land snail shells The isotopic values of fossil snail shells can be important archives of past climate. Here we present the first carbon (δ13C) and oxygen (δ18O) isotope values of radiocarbon-dated and live-collected snails in interior Alaska to explore changes in vegetation and humidity through the late glacial period (14-11.7 ka). Snail shell δ13C values were relatively consistent through the late glacial. However, late glacial shell δ13C values are 2.8‰ higher than modern shells. This offset is best explained by changes in the δ13C values of plants consumed by snails. Snail shell δ18O values varied through the late glacial, which can be partially explained by changes in relative humidity (RH). RH during the snail growing period... Categories: Data; Tags: Alaska, USGS Science Data Catalog (SDC), high latitudes, land snail, none, All tags... oxygen isotopes, paleoclimate, Fewer tags