Volcano Hazards Program Office

Data and Tools

Filter Total Items: 57
Date published: January 1, 2019

Database for the geologic map of Lassen Volcanic National Park and vicinity, California - Geodatabase

A database of geologic map of Lassen Volcanic National Park as described in the original abstract: The geologic map of Lassen Volcanic National Park (LVNP) and vicinity encompasses 1,905 square kilometers at the south end of the Cascade Range in Shasta, Lassen, Tehama, and Plumas Counties, northeastern California. Most of the map area is underlain by middle to late Pleistocene v

Date published: January 1, 2019

Gas and heat emission measurements at Solfatara Plateau Thermal Area, Yellowstone National Park (May-September 2017)

From May to September 2017 measurements of gas and heat emissions were made at Solfatara Plateau Thermal Area, an acid-sulfate, vapor-dominated area in Yellowstone National Park, Wyoming. An eddy covariance system measured half-hourly CO2, H2O and sensible and latent heat fluxes, air temperature and pressure, wind speed and direction and soil moisture. A Multi-GAS instrument measured

Date published: January 1, 2019

Volcanic hazard boundaries from the volcanic hazard assessment of Medicine Lake volcano, California

Medicine Lake volcano (MLV) is a very large shield-shaped volcano located in northern California where it forms part of the southern Cascade Range of volcanoes. It has erupted hundreds of times during its half-million-year history, including nine times during the past 5,200 years, most recently 950 years ago. This record represents one of the highest eruptive frequencies among Cascade v

Date published: January 1, 2019

Particle-size analysis results for a variety of natural and man-made materials used to assess the precision and accuracy of laboratory laser-diffraction particle-size analysis of fluvial sediment

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

Date published: January 1, 2019

Data release for results of societal exposure to California's volcanic hazards

The U.S. Geological Survey, California Volcano Observatory (CalVO) in collaboration with the State of California Governor’s Office of Emergency Services and the California Geological Survey, are working to understand the State’s exposure to volcanic hazards by integrating volcanic hazard information with geospatial data on at-risk populations, infrastructure, and resou

Date published: January 1, 2019

Digital elevation models of Mount St. Helens crater and upper North Fork Toutle River basin, based on 1987 and 1999 airborne photogrammetry surveys Digital elevation models of Mount St. Helens crater and upper North Fork Toutle River basin, based on 1987

The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava domes were extruded during the subsequent eruptive periods of 1980-1986 and 2004-2008. Nearly four decades after the emplacement of the 1980 debris avalanche, high sediment production persists in the North Fork Toutle R

Date published: January 1, 2019

Database of the Geologic Map of the Lassen Peak, Chaos Crags, and Upper Hat Creek Area, California - Database

A database of geologic map of Lassen Peak, Chaos Crags, and Upper Hat Creek volcanic area as described in the original abstract: The Lassen Peak, Chaos Crags, and Upper Hat Creek map area lies near the southern end of the Cascade Range in northern California. The map area includes parts of the three elements that together form the Lassen volcanic center: the Lassen dacitic dome field

Date published: January 1, 2019

Water level in a deep well on the summit of Kilauea Volcano, Hawaii

Between March 2002 and May 2011 periodic water level measurements were made in the well on the summit of Kilauea Volcano using a 2,000-foot calibrated electric tape (Waterline Envirotech Ltd.) with graduations of 0.01 foot. Water level measurements resumed in March 2018. Calibration of the electric tape at the USGS Hydrologic Instrumentation Facility (HIF) in November 2018 revealed a

Date published: January 1, 2019

Repeat microgravity data from Yellowstone National Park, Wyoming

These data are microgravity measurements collected in Yellowstone National Park. Data are collected suing multiple instruments, which each data file representing measurements from a specific instrument during a specific time period. The data dictionary explains the file format and contents, and the dataset will be updated as new data are collected.

Date published: January 1, 2019

Water level, temperature, and chemistry in a deep well on the summit of Kilauea Volcano, Hawaii

High-resolution (plus or minus (±) 0.1°C) temperature measurements were accomplished with a platinum resistance temperature (PRT) probe. The PRT probe, suspended from an armored logging cable, was lowered into the well over a sheave with a portable hand-cranked reel. Attached to the sheave were both mechanical and digital depth counters. The PRT output and digital depth

Date published: January 1, 2019

KW_chemistry_isotopes

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, unpreserve

Date published: January 1, 2019

California volcano locations, threat rank and hazard zones

The California volcano locations, threat rank and hazard zones data release contains two shapefiles for download or use as a web map service. The California Volcanic Center Locations shapefile was created to provide a generalized location of volcano hazard sources. The California Volcano Hazard Zones shapefile was created from previously published hazard zone reports. Specific details about...