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Grids in support of the U.S. Geological Survey Thermal Model for Seismic Hazard Studies Grids in support of the U.S. Geological Survey Thermal Model for Seismic Hazard Studies
A 3D temperature model is constructed in order to support the estimation of physical parameters within the USGS National Crustal Model. The crustal model is defined by a geological framework consisting of various lithologies with distinct mineral compositions. A temperature model is needed to calculate mineral density and bulk and shear modulus as a function of position within the crust...
Spatiotemporal Analysis of the Foreshock-Mainshock-Aftershock Sequence of the 6 July 2017 M5.8 Lincoln, Montana, Earthquake - Data Release Spatiotemporal Analysis of the Foreshock-Mainshock-Aftershock Sequence of the 6 July 2017 M5.8 Lincoln, Montana, Earthquake - Data Release
We used matched filter detection and multiple-event relocation techniques to characterize the spatiotemporal evolution of the sequence. Our analysis is from the 14 closest seismic stations to the earthquake sequence, which included seven permanent stations from the Montana Regional Seismic Network, one permanent station from the ANSS backbone network and three temporary seismic stations...
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Data Release for 2018 Update of the U.S. National Seismic Hazard Model Data Release for 2018 Update of the U.S. National Seismic Hazard Model
The 2018 Update of the U.S. National Seismic Hazard Model defines the potential for earthquake ground shaking for various probability levels across the conterminous United States and is applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. The updated model represents an assessment of the best available science in...
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Database of ground motions from tectonic and volcanic events, Hawaii, 2018 Database of ground motions from tectonic and volcanic events, Hawaii, 2018
This study involves a collection of peak ground motions from the 2018 M6.9 earthquake near Leilani Estates, Hawaii and the seismicity associated with the Kilauea Volcano eruption and summit collapse events. This study was intended to provide instrumental ground motion observations to evaluate ground motion models for use in the USGS Hawaii seismic hazard model. Significant variations in...
Database of ground motions from in-slab earthquakes near Anchorage, Alaska, 2008-2019 Database of ground motions from in-slab earthquakes near Anchorage, Alaska, 2008-2019
The dataset contains earthquake ground motions from intermediate-depth (in-slab) earthquakes occurring within 350 km of Anchorage, Alaska 2008-2019. Ground motions are processed as described in the accompanying journal article for rotation-independent horizontal-component ground-shaking at oscillator periods between 0.1 and 10 s.
Infiltration data collected post-Hurricane Maria across landslide source area materials, Puerto Rico, USA Infiltration data collected post-Hurricane Maria across landslide source area materials, Puerto Rico, USA
This Data Release includes information to support the characterization of surface/near-surface infiltration rates of selected landslide source area materials following Hurricane Maria across Puerto Rico, USA. The dataset includes comma-delimited measurements of field-saturated hydraulic conductivity (Kfs) collected over two field campaigns (Fall 2018 and Spring 2019) as well as...
Data Release for the Susceptibility of Oklahoma's Basement to Seismic Reactivation Published in NGEO 2019 Data Release for the Susceptibility of Oklahoma's Basement to Seismic Reactivation Published in NGEO 2019
Recent widespread seismicity in Oklahoma is attributed to the reactivation of pre existing, critically-stressed, and seismically unstable faults due to decades of wastewater injection. However, the structure and properties of the reactivated faults remain concealed by the sedimentary cover. Here, we explore the major ingredients needed to induce earthquakes in Oklahoma by characterizing...
Map of slope-failure locations in Puerto Rico after Hurricane Maria Map of slope-failure locations in Puerto Rico after Hurricane Maria
In Puerto Rico, tens of thousands of landslides, slumps, debris flows, rock falls, and other slope failures were triggered by Hurricane Maria, which made landfall on 20 September 2017. "Landslide" is used here and below to represent all types of slope failures. This dataset is a point shapefile of landslide headscarps identified across Puerto Rico using georeferenced aerial and satellite...
An updated stress map of the continental U.S. reveals heterogeneous intraplate stress An updated stress map of the continental U.S. reveals heterogeneous intraplate stress
Earthquake focal mechanisms and stress inversion results for the conterminous United States.
Spatially averaged coherencies (krSPAC) and Rayleigh effective-mode modeling of microtremor data from asymmetric arrays Spatially averaged coherencies (krSPAC) and Rayleigh effective-mode modeling of microtremor data from asymmetric arrays
The datasets for this investigation consist of microtremor array data collected at sites in San Jose, California, Pleasanton, California, and synthetic microtremor array data created as part of a blind shear-wave velocity modeling study as part of the Third International Symposium on the Effects of Surface Geology on Seismic Motion (ESG2006), Grenoble, France, 30 August - 1 September...