• Organization: Department of the Interior
• Updated: 2024-12-16T00:00:00Z

In order to understand the provenance of lead in the surface water, groundwater, soils, and shallow pore water within and near the Middleton Municipal Airport–Morey Field (C29) in Middleton, WI, a...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2025-06-02

Stable Isotope Ratios of Nitrate from the National Aquatic Resource Survey 2023 and 2024. We analyzed 163 samples with nitrate concentrations above 2 mg-N/L for oxygen and nitrogen isotopes of...

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• Organization: Department of the Interior
• Updated: 2020-09-29T00:00:00Z

Strontium isotope ratios of historical Kīlauea summit and rift lavas were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S....

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• Organization: Department of the Interior
• Updated: 2020-09-29T00:00:00Z

Strontium isotope ratios of lavas from Hawaiʻi were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2017-01-01T00:00:00.000+00:00

Stable isotope ratios from skin of live and stranded bottlenose dolphins

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-02-22T00:00:00.000+00:00

There are three data types in this dataset. 1) Dissolved methane concentrations and stable carbon isotope ratios were measured from water samples collected in the water column and sediments of...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-02-13

Cellulosic stable carbon and oxygen isotope values in tree-rings of mature Douglas-fir trees at five sites in western Oregon. This dataset is associated with the following publication: Lee,...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-03-19

Time-series of mercury, carbon, and nitrogen stable isotope ratios of Lake Michigan lake trout from the EPA Great Lakes Fish Monitoring and Surveillance Program.

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• Organization: Department of the Interior
• Updated: 2023-12-06T00:00:00Z

Methylmercury concentrations and stable isotope ratios were measured from back feathers of California black rails (Laterallus jamaicensis coturniculus) and six taxa of their invertebrate prey...

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• Organization: Department of the Interior
• Updated: 2024-12-20T00:00:00Z

Atmospheric mercury (Hg) deposition, which has been declining in North America since 1985, is the preeminent delivery pathway to the Great Lakes, making them sentinels for tracking shifts in...

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• Organization: Department of the Interior
• Updated: 2025-06-09T00:00:00Z

This dataset contains U-Pb isotopic data and ages, Hf isotope data, and trace element concentrations of zircon from igneous rocks collected from the Yukon-Tanana Upland, eastern Alaska. The sample...

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• Organization: Department of the Interior
• Updated: 2025-05-29T00:00:00Z

This dataset contains uranium–lead (U-Pb) isotopic data and ages, hafnium (Hf) isotope data, and trace element concentrations of zircon from igneous rocks collected from the Darby Mountains area...

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• Organization: Department of the Interior
• Updated: 2025-05-30T00:00:00Z

This dataset contains U-Pb isotopic data and ages, Hf isotope data, and trace element concentrations of zircon from igneous rocks collected from the western Alaska Range of south-central Alaska....

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• Organization: Department of the Interior
• Updated: 2023-12-06T00:00:00Z

Primary and secondary consumers are important links in the trophic transfer of methylmercury, and their methylmercury concentrations are often measured to assess the potential risk of toxicity to...

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• Organization: Department of the Interior
• Updated: 2020-08-30T00:00:00Z

This study was initiated to provide baseline data and to determine the utility of stable isotope analysis to evaluate the foraging strategies of an opportunistic reptile predator. Stable isotope...

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• Organization: Department of the Interior
• Updated: 2022-02-17T00:00:00Z

Elemental concentrations and stable oxygen and carbon isotope ratios are reported for five mammillary calcite specimens collected from the groundwater-filled fissures Devils Hole and Devils Hole...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2023-08-13

Stable water isotopes of precipitation across the USA and from summer and winter. Additionally isotopic data was included for river water within the Willamette River in Oregon. The d18O and d2H...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2002-01-01T00:00:00.000+00:00

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...

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• Organization: Department of the Interior
• Updated: 2025-04-29T00:00:00Z

These data are in nine tables relating to three species of arctic breeding geese studied on the Colville River Delta, Alaska, 2011-2014. The tables provide: 1-2) spring migration and arrival...

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• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-17

The BOREAS group TE-05 collected measurements in the NSA and SSA on gas exchange, gas composition and tree growth. This data set contains measurements of the concentration and stable carbon...

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