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Chemical and isotopic composition of gas, water, and solids from the 2019-2020 water lake in Halema’uma’u Crater, Kīlauea Volcano, Hawaii: Gas Chemistry

Metadata Updated: July 6, 2024

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, Ltd. T3ST/F), hydrogen sulfide (H2S; City Technology, Ltd. T3H), a GPS unit (Garmin GPS 18x), and a datalogger (Campbell Scientific CR300-WIFI). The responses of the CO2, SO2, and H2S sensors were checked at the crater rim after the flights using portable gas standards (CO2 = 1000 ppm ± 2%, SO2 = 10 ppm ± 10%, H2S = 10 ppm ± 10%). The CO2 response was within -1% of the standard gas value and the baseline-corrected SO2 and H2S responses were accurate within 2% and 4%, respectively, when an ideal gas pressure correction was applied to the sulfur sensors' output. Based on the sensor verification results, the accuracy of the CO2, SO2, and H2S measurements were limited by the accuracy of the gas standards. Please see the associated publication for interpretative results: [insert Nadeau et al. citation]

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Identifier USGS:62b35844d34ea7748d9b08ea
Data Last Modified 20230330
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id ecabc63c-d755-43ea-bb87-23a9a0776955
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -155.296,19.402,-155.28,19.41
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash e675d95d8a53f90a7832c2160eae1153db5f363cef5c947a74b7e38c151a6d5c
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -155.296, 19.402, -155.296, 19.41, -155.28, 19.41, -155.28, 19.402, -155.296, 19.402}

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