Research Hydrologist
Email:
mreid@usgs.gov
Office Phone:
650-439-2891
ORCID:
0000-0002-5595-1503
Location
345 Middlefield Road
Mail Stop 910
Menlo Park
, CA
94025
US
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Data in this release record ground-surface positions obtained during post-disaster emergency response following the 2014 catastrophic Oso (SR 530) landslide, Snohomish County, Washington. Global Positioning System (GPS) data were collected using three USGS GPS-seismometer spider units deployed adjacent to (OSO1), upslope of (OSO2), and on (OSO3) the landslide (see image for locations) for about five weeks. Details of the post-disaster response as well as the spider units are described in the accompanying publication. Positions were determined in near real-time relative to a base-station GPS receiver (OSO0) located on stable ground less than 2 km from the landslide using static, differential GPS processing techniques....
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: GPS,
Geomorphology,
Oso,
Snohomish County,
USGS Science Data Catalog (SDC), All tags...
Washington,
landslide,
monitoring, Fewer tags
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Field data used to support numerical simulations of variably-saturated flow focused on variability in soil-water retention properties for the U.S. Geological Survey Bay Area Landslide Type (BALT) Site #1 in the East Bay region of California, USA
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: BALT-1,
California,
East Bay region,
GHSC,
Geologic Hazards Science Center, All tags...
LHP,
Landslide Hazards Program,
USGS,
USGS Science Data Catalog (SDC),
United States,
earth science,
hydraulic conductivity,
landslide hazard,
numerical simulations of variably-saturated flow,
permeameter,
pore-water pressure,
rainfall,
soil-moisture,
soil-suction,
soil-water retention, Fewer tags
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Hurricane Maria induced about 70,000 landslides throughout Puerto Rico, USA (Hughes and others, 2019). Data in this project pertain to two areas situated in Puerto Rico’s rugged Cordillera Central range. Combined, these areas account for more than half of the hurricane-induced landslides. One of these areas encloses two neighboring municipalities, Lares Municipio, and Utuado Municipio, and the second area encloses Naranjito Municipio. These data include one-meter (1-m) resolution raster grids derived from post-hurricane light detection and ranging (lidar) digital elevation models (DEM) available at the 3DEP LidarExplorer (https://apps.nationalmap.gov/lidar-explorer/#/). The elevation data as well as slope and flow...
Tags: Geomorphology,
Lares,
Naranjito,
Puerto Rico,
USGS Science Data Catalog (SDC), All tags...
Utuado,
geoscientificInformation,
hazard preparedness,
landslide susceptibility assessment,
landslides, Fewer tags
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We performed ring shear strength testing of three specimens from a glaciolacustrine silty clay unit involved in a large landslide that occurred March 22, 2014 near the town of Oso, Washington. Ring shear tests utilized apparatus DPRI-5 at Kyoto University, Japan and test results are presented herein. We refer to the specimens as the clay, clayey silt, and silt. Some tests were performed under controlled shear stress with shear stress increased at ~0.5 kPa/s until failure and failure was permitted to continue for decimeters to meters of cumulative shear displacement. These tests were performed on unfailed material and on fault gouge that developed during failure. Other tests were performed on fault gouge under constant...
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