Found 23 datasets matching "oxygen isotopic analysis".
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Aliquots of collected water samples were prepared for isotopic analysis at the USGS laboratories in Menlo Park, CA by precipitating dissolved sulfate as barium sulfate, using the methods of...
Search relevance: 73.77 | Views last month: 0 -
Ice core from Greenland was melted, filtered, and homogenized. Its stable hydrogen (δ2H) and oxygen (δ18O) isotopic compositions were adjusted to approximately match those of USGS46 ice core water...
Search relevance: 67.53 | Views last month: 0 -
Samples from outside the crater lake were analyzed for their sulfur isotopic composition. Samples of sulfate alteration and native sulfur from the Kīlauea summit, Halema’uma’u crater (HMM), and...
Search relevance: 65.75 | Views last month: 0 -
Geochemical analysis of authigenic carbonates from the Cascadia Subduction Zone. Powdered carbonate samples for stable carbon (delta-C-13) and oxygen (delta-O-18) isotopes and carbonate phase were...
Search relevance: 63.86 | Views last month: 0 -
Historical water and gas chemistry data from geothermal areas are important for detecting long-term patterns, informing geothermal energy exploration, development, and use, and for contextualizing...
Search relevance: 62.43 | Views last month: 0 -
The stable hydrogen (delta 2H) and oxygen (delta 18O) isotopic compositions of more than 4,300 weekly composite samples of precipitation from thirteen National Atmospheric Deposition Program...
Search relevance: 53.78 | Views last month: 0 -
The stable hydrogen (delta 2H) and oxygen (delta 18O) isotopic compositions of more than 6,400 weekly composite samples of precipitation from nine National Atmospheric Deposition Program (NADP)...
Search relevance: 52.94 | Views last month: 1 -
The CLIMAP (Climate: Long-range Investigation, Mapping, and Prediction) Project was funded by the National Science Foundation as part of the International Decade of Ocean Exploration (IDOE)....
Search relevance: 51.40 | Views last month: 0 -
The Bonnet Carré Spillway (BCS), located about 28 miles northwest of New Orleans, Louisiana, was constructed in the early 1930s as part of an integrated flood-control system for the lower...
Search relevance: 49.35 | Views last month: 0 -
The stable hydrogen (delta 2H) and oxygen (delta 18O) isotopic compositions of more than 1,400 daily or weekly composite samples of precipitation from four National Atmospheric Deposition Program...
Search relevance: 48.84 | Views last month: 0 -
This data release documents water-quality data collected from April 2010 through December 2016 by the U.S. Geological Survey in cooperation with the San Antonio Water System from across the San...
Search relevance: 45.92 | Views last month: 0 -
This dataset includes field measurements and laboratory analyses of surface water, bottom water (sediment-water interface), surficial (0-2 cm) sediment, pore water (0-2 cm), and biota collected in...
Search relevance: 44.32 | Views last month: 0 -
Coastal eutrophication is a prevalent threat to the healthy functioning of ecosystems globally. While degraded water quality can be detected by monitoring oxygen, nutrient concentrations, and...
Search relevance: 39.32 | Views last month: 0 -
Assessment of geochemical cycling within tidal wetlands and measurement of fluxes of dissolved and particulate constituents between wetlands and coastal water bodies are critical to evaluating...
Search relevance: 36.61 | Views last month: 0 -
Chemical and isotopic analyses are reported for water samples collected from water supply wells, a geothermal well in the Puna Geothermal Venture (PGV) power plant, a hot spring in the Puna...
Search relevance: 35.31 | Views last month: 0 -
Kilauea, on the Island of Hawaii is one of the world’s most active volcanoes and it hosts one of the densest volcano monitoring networks. A deep well on the southwest rim of Kilauea’s caldera,...
Search relevance: 33.66 | Views last month: 0 -
Located in south-central Texas, the Geronimo Creek and Plum Creek watersheds have long been characterized by elevated nitrate concentrations. From April 2015 through March 2016, an investigation...
Search relevance: 32.49 | Views last month: 0 -
There are over 10,000 hydrothermal features in Yellowstone National Park (YNP), where waters have pH values ranging from about 1 to 10 and surface temperatures up to 95 °C. Active hydrothermal...
Search relevance: 30.96 | Views last month: 0 -
The Hamilton Wetland Restoration Project (HWRP) is a joint venture between the US Army Corps of Engineers (USACE; San Francisco District) and the California State Coastal Conservancy. The site is...
Search relevance: 27.75 | Views last month: 1 -
The Hamilton Wetland Restoration Project (HWRP) is a joint venture between the US Army Corps of Engineers (USACE; San Francisco District) and the California State Coastal Conservancy. The site is...
Search relevance: 26.78 | Views last month: 0
