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Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Joseph A Bard John O Langbein U.S. Geological Survey - ScienceBase U.S. Geological Survey Jonathan P Perkins U.S. Geological Survey, ALASKA REGION Volcano Science Center Categories Data (1) Tags (with Type=Theme and Scheme=USGS) geoscientificinformation (4) volcanic activity (3) dem (2) elevation (2) geology (2) lava (2) volcanoes (2) volcanology (2) calaveras fault (1) crustal deformation (1) earthquakes (1) fault creep (1) fires (1) geodesy (1) gorda plate (1) hazard preparedness (1) instruments and techniques (1) parkfield earthquake experiment (1) percolation (1) permeability (1) More... View Results as: JSON ATOM CSV

Digital elevation model of the lava dome in the crater of Mount St. Helens, November 12, 1986 The catastrophic, explosive eruption of Mount St. Helens, Washington, on May 18, 1980, is the most well-known eruption of the volcano. Less well known is the May 18th eruption marked the beginning of a period of eruptive activity that lasted through 1986. From October 1980 through October 1986, a series of 17 dome-building episodes added millions of cubic meters of lava to the crater floor. Most of the growth occurred when magma extruded onto the surface of the dome, forming short (650 to 1,300 feet), thick (65 to 130 feet) lava flows. This data release is a 1-meter resolution digital elevation model (DEM) and a corresponding hillshade raster derived from a previously unpublished 1:2,000 scale topographic contour... Tags: Cascade Range, DEM, Geography, Mount Saint Helens, Mount Saint Helens National Volcanic Monument, All tags... Pacific Northwest, USGS Science Data Catalog (SDC), United States of America, Volcanology, Washington, elevation, geology, geoscientificInformation, lava, volcanic activity, volcanoes, volcanology, Fewer tags Field-saturated hydraulic conductivity time series and sediment accumulations following the 2017 Nuns and Tubbs wildfires, Napa and Sonoma Counties, CA, USA This dataset comprises repeat surveys of field-saturated hydraulic conductivity and sorptivity following the October 2017 Nuns and Tubbs wildfires as part of an effort to document soil-hydraulic recovery. A summary table includes associated physiographic properties for each site, including: pre-burn vegetation, lithology, soil burn severity, location, soil texture, and associated van Genuchten parameters determined using Carsel and Parrish (1988). Soil-hydraulic properties were calculated using the model of Zhang (1997) and Vandervaere et al. (2000). We separately include the raw cumulative infiltration measurements used for the calculation of soil-hydraulic properties. Lastly, this dataset includes a survey of... Categories: Data; Tags: Geomorphology, Hydrology, Sedimentology, USGS Science Data Catalog (SDC), fires, All tags... geoscientificInformation, hazard preparedness, percolation, permeability, runoff, sedimentation, Fewer tags Digital elevation model of the lava dome in the crater of Mount St. Helens on October 20, 1988 The catastrophic, explosive eruption of Mount St. Helens, Washington, on May 18, 1980, is the most well-known eruption of the volcano. Less well known is the May 18th eruption marked the beginning of a period of eruptive activity that lasted through 1986. From October 1980 through October 1986, a series of 17 dome-building episodes added millions of cubic meters of lava to the crater floor. Most of the growth occurred when magma extruded onto the surface of the dome, forming short (650 to 1,300 feet), thick (65 to 130 feet) lava flows. This data release is a 2-meter resolution digital elevation model (DEM) and hillshade raster derived from a previously unpublished 1:4,000 scale topographic contour map, based on... Tags: Cascade Range, DEM, Geography, Geomorphology, Mount Saint Helens, All tags... Mount Saint Helens National Volcanic Monument, Pacific Northwest, USGS Science Data Catalog (SDC), United States of America, Volcanology, Washington, elevation, geology, geoscientificInformation, lava, volcanic activity, volcanoes, volcanology, Fewer tags Geodetic measurements using a two-color Electronic Distance Meter made in California, 1975 to 2005 Measurements of changes in the distance (or length) between monuments are provided. These measurements were made using a two-color Electronic Distance Meter (EDM) that can measure distances between 1 and 10 KM. Nominal precision of these data range from 0.3 mm to 1.0 mm dependent upon the baseline’s length. These measurements were made between mid-1975 to mid-2006. Data in this archive are from eight networks, each consisting of more the 9 baselines. The locations of these networks in California include far northwestern California, Hollister, CA., Long Valley Caldera in eastern California, Parkfield, Pearblossom, and Anza; the last two located in Southern California. For four of the networks (Hollister, Parkfield,... Tags: Calaveras Fault, Crustal Deformation, Crustal Deformation, Earthquakes, Earthquakes, All tags... Fault Creep, Geodesy, Geodesy, Geophysics, Gorda Plate, Parkfield Earthquake Experiment, San Andreas Fault, San Jacinto Fault, Seismology, Time series, USGS Science Data Catalog (SDC), Volcanic Activity, Volcanology, Volcanos, geoscientificInformation, instruments and techniques, Fewer tags