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The dataset documents results from testing of 1) vendor-supplied reference materials 2) NIST-traceable polysidperse glass bead reference materials 3) mixtures of commercially-available glass beads 4) mixtures of internal reference materials prepared from geologic material
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Chemistry and Isotope Data Sample Collection: Water samples were collected from approximately 100 feet (30 meters) below the water table using either a 4 foot or 6 foot long stainless-steel bailers with an inner diameter of 0.5 in. Samples for anion concentration measurements were poured into 60 ml polypropylene bottles through 0.45mm pore-diameter filter. Raw (unfiltered, unpreserved) samples for oxygen-18 and deuterium isotope analyses were stored in 30 ml glass bottles. Sample Analyses: The concentrations of sulfate (SO42-), chloride (Cl-), and fluoride (F-) in samples collected until October 2003 were determined with a Dionex DX-300 ion chromatograph, and since October 2003 with a Dionex ICS-2000 ion chromatograph...
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This release contains data collected during two uncrewed aircraft systems (UAS) flights to sample gas plume compositions within Halema’uma’u crater, Kīlauea Volcano, Hawai'i. Gas compositions were measured on October 26, 2019 with a multi-GAS (multiple Gas Analyzer System) instrumented DJI M600 Pro multi-rotor UAS. The first flight targeted emissions from deep within the crater and the UAS flew as much as 510 m below its crater-rim launch point (1161 m elevation). The second flight focused on sampling emissions from gas vents in the northern crater wall. The multi-GAS payload included sensors to measure water vapor, carbon dioxide (CO2), and sample pressure (PP Systems SBA-5), sulfur dioxide (SO2; City Technology,...
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Kīlauea, on the Island of Hawai`i 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, often referred to informally as the “NSF Well” or the “Keller Well” was drilled in 1973 to a depth of 1,262 meters from an elevation of 1,103 meters. The ultimate goal of the drilling project was to “test predictions made from surface-based geophysical surveys and seek evidence of a hydrothermal system over a known magma body” (Zablocki et al., 1974; Keller et al., 1979). Following drilling the open hole filled up with drilling mud and in October 1998 the hole was cleared of the mud using a large pump to a depth of about...
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Sample Analyses: Samples were analyzed for their trace element chemistry using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) at the Corman Center for Mass Spectrometry, Rensselaer Polytechnical Institute, New York. After XRF concentrations were determined following the methods laid out in the “X-ray Fluorescence (XRF)” portion of this data release, a small piece (~5 mm by 5-8 mm) was cut from the wavelength dispersive (WDXRF) pellets and mounted on a one-inch glass puck with 25-30 other samples. Samples were polished down to ~0.5 micron with diamond paste and placed in an ablation chamber that holds two sample pucks, 18 reference standards, and a drift monitor on a third puck. Samples were...
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