Geologic Hazards Science Center

Data and Tools

Filter Total Items: 49
Date published: June 2, 2021

Initial Observations of Landslides triggered by the 2018 Anchorage, Alaska earthquake

This data release provides the locations of 43 landslides that occurred during the 2018 Anchorage, Alaska earthquake mapped from high-resolution lidar (1-m). Lidar data can be accessed via the Alaska Division of Geological and Geophysical Surveys elevation portal (https://elevation.alaska.gov).

Date published: June 1, 2021

Map data from landslides triggered by Hurricane Maria in a section of Naranjito, Puerto Rico

Hurricane Maria caused widespread landsliding throughout Puerto Rico during September 2017. Previous detailed landslide inventories following the hurricane include Bessette-Kirton et al. (2017, 2019). Here we continue that work with an in-depth look at a portion of northwest Naranjito, which is a municipality in the northeastern part of the main island.

Date published: May 13, 2021

Data Release for the 2018 Update of the U.S. National Seismic Hazard Model: Where, Why, and How Much Probabilistic Ground Motion Maps Changed

This dataset presents where, why, and how much probabilistic ground motions have changed with the 2018 update of the National Seismic Hazard Model (NSHM) for the conterminous U.S. (CONUS) vs. the 2014 NSHM.

Date published: May 5, 2021

Ground motion Fourier and response spectra from Utah earthquakes, 2010--2020

Records from strong motion stations were downloaded from FDSN and CESMD data centers with a search radius of approximately 220 km from Salt Lake City. Waveforms were processed to deconvolve instrument response and for baseline corrections. Signal was separated from noise using an automated P-wave picker.

Date published: May 4, 2021

Soil moisture monitoring following the 2009 Station Fire, California, USA, 2016-2019

This data release includes 2016-2019 soil moisture timeseries for two drainage basins ("Arroyo Seco" and "Dunsmore Canyon") that burned during the 2009 Station Fire in Los Angeles County, California, USA.

Date published: April 9, 2021

Map data from landslides triggered by Hurricane Maria in the greater karst region of northwest Puerto Rico

Hurricane Maria caused widespread landsliding throughout Puerto Rico in September 2017. While the majority of landslide inventories following the hurricane focused on mountainous regions underlain by igneous and volcaniclastic bedrock (Bessette-Kirton et al.

Date published: April 5, 2021

Gridded estimates of postfire debris flow frequency and magnitude for southern California

"This data release contains gridded estimates of postfire debris flow probability and magnitude for six different rainfall and wildfire scenarios in southern California. The scenarios represent the present and possible future precipitation and fire regimes for the region. The results are provided for 1 km2 cells across the study area.

Date published: February 9, 2021

Map of landslide structures and kinematic elements at Barry Arm, Alaska in the summer of 2020

Two active landslides at and near the retreating front of Barry Glacier at the head of Barry Arm Fjord in southern Alaska (Figure 1) could generate tsunamis if they failed rapidly and entered the water of the fjord. Landslide A, at the front of the glacier, is the largest, with a total volume estimated at 455 M m3 (Dai et al, 2020).

Date published: January 25, 2021

Coseismic surface displacement and fault zone width measurements in the 2019 Ridgecrest earthquakes from WorldView optical image correlation

(1) Lateral displacement measurements made based on optical image correlation results from WorldView satellite images along with (2) local and regional rupture width measurements for the 2019 Mw6.4 and Mw7.1 Ridgecrest earthquakes, CA.  These datasets are associated with the publication:  Gold, R. D., DuRoss, C. B., & Barnhart, W. D., 2021, Coseismic surface displacement in the...

Date published: January 21, 2021

Earthquake geology inputs for the U.S. National Seismic Hazard Model (NSHM) 2023, version 1.0

This Data Release contains preliminary versions of two related databases: 1) A fault sections database ("NSHM2023_FaultSections_v1"), which depicts the geometry of faults capable of hosting independent earthquakes, and 2) An earthquake geology site information database ("NSHM2023_EQGeoDB_v1"), which contains fault slip-rate constraints at points. These...

Date published: September 1, 2020

Hillslope hydrologic monitoring data following Hurricane Maria in 2017, Puerto Rico, July 2018 to June 2020

This data release includes time-series, qualitative descriptions, and laboratory testing data from two monitoring stations installed in Puerto Rico following Hurricane Maria in 2017, which led to tens of thousands of landslides across the island (Bessette-Kirton et al., 2017). The stations were installed to investigate subsurface hydrologic response to rainfall and develop a quantitat

Date published: July 23, 2020

Waveform Data and Metadata used to National Earthquake Information Center Deep-Learning Models

This is the supporting data used to train machine learning models used by the National Earthquake Information Center to improve pick times and classify source characteristics.