http://volcanoes.usgs.gov/
Location
COLUMBIA TECH CENTER
1300 SE Cardinal Court, Bldg. 10, Suite 100
Vancouver
, WA
98683
USA
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Files in this folder include: phase1 and phase2: directories containing input and output for the two simulations that were combined (from phase 1 and phase 2 of the eruption) to generate the deposit file displayed in Fig. 6c. DepositFile_ESRI_ASCII.txt A gridded file in ESRI ASCII format, containing the mass load in kg/m2 throughout the model domain from the combined phase-1 and phase2 eruptions. Header lines in the file indicate the (1) number of rows, (2) number of columns, (3) longitude of the lower left corner (i.e. the cell center of the lower left cell), (4) latitude of the lower left corner, (5) the cell spacing in dx and dy respectively, and (6) the no-data value. Data are written in 10f10.3...
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We installed an eddy covariance station on July 10, 2018 at Bison Flat, an acid-sulfate, vapor-dominated area (0.04-km2) in Norris Geyser Basin, Yellowstone National Park, WY to monitor variations in hydrothermal gas and heat emissions. Since then, this station has measured CO2, H2O and sensible and latent heat fluxes, air temperature and pressure, and wind speed and direction on a half-hourly basis. We also measured soil CO2 fluxes and temperatures on a grid using the accumulation chamber method and thermocouple probes, respectively, on July 11-12, 2018 and soil CO2 fluxes only on June 25, 2019. On July 10, 2018 and June 24, 2019, we collected fumarole gas samples for analysis of bulk chemical and carbon (d13C-CO2)...
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Large numerical grid used for finite element and finite volume analysis of induced seismicity in Paradox Basin. The grid construction used the boundaries of three sub-horizontal surfaces; the topography, and the top and bottom of the production formation is determined from drilling and seismic reflection profiling, yielding the surface topography and thickness variations in these data throughout the domain. The cell dimensions in the north and east directions are 200 m and the horizontal gridlines are oriented north-south and east-west. There are 245 elements in the east west direction, 241 elements in the north south direction, and 31 elements in the vertical, extending from the surface to 15 km depth. The grid...
Tags: Bedrock, Colorado,
Geophysics,
Hydrology,
Paradox Valley, Colorado,
USGS Science Data Catalog (SDC), All tags...
earthquake hazards,
induced seismicity,
poroelasticity,
three dimensional finite volume domain, Fewer tags
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During 2018, Kīlauea Volcano, on the Island of Hawaiʻi, had a large effusive eruption (~1 cubic kilometer of lava) on the lower East Rift Zone that caused widespread destruction (Neal and others, 2019; Dietterich and others, 2021). This lower flank eruption was accompanied by one of the largest collapses of the summit caldera in two hundred years, with portions of the caldera floor subsiding more than 500 m (Anderson and others, 2019; Neal and others, 2019). On July 25, 2019, approximately one year after the summit collapse sequence, a small pond of water was first observed in the deepest portion of the collapse pit, within Halemaʻumaʻu crater (Nadeau and others, 2020). The water level rose gradually over the...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Halemaʻumaʻu,
Kīlauea Crater,
USGS Science Data Catalog (SDC),
Volcanology,
groundwater level, All tags...
volcanic activity,
volcanology, Fewer tags
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This release presents volcanic gas monitoring data from periodic surveys and temporary instrument deployments at Newberry Volcano, Oregon. Measurements of plume-gas and ambient air compositions were obtained using single-gas industrial hydrogen sulfide (H2S) sensors and with multi-GAS (multiple Gas Analyzer System; Aiuppa et al., 2005; Shinohara, 2005; Lewicki et al., 2017) instruments that measure water vapor (H2O), carbon dioxide (CO2), sulfur dioxide (SO2), and H2S abundances. Discrete multi-GAS surveys were completed in 2017 at East Lake hot springs and Paulina hot springs. In response to reports of anomalous degassing in the summer of 2020 more extensive discrete multi-GAS surveys were completed around Newberry...
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