Geologist
Email:
scorbett@usgs.gov
Office Phone:
650-439-2819
Fax:
650-329-4936
ORCID:
0000-0003-3277-1021
Location
345 Middlefield Rd
|
On February 14th, 2019, a strong atmospheric river storm (AR4 on the Atmospheric River scale of Ralph et al., 2019) struck California. The heavy rainfall caused landslides in both northern and southern California (Hatchett et al., 2020). This data release includes two subsets of mapped shallow landslide source locations in the vicinity of western Riverside County, California, where sufficient post-event imagery was available within Google Earth (image date: August 15, 2019). The data release includes: 1) .csv files containing the point locations of shallow hillslope landslides, 2) .zip files containing shapfiles (.shp) of the mapped study areas. Ralph, F., Rutz, J. J., Cordeira, J. M., Dettinger, M., Anderson,...
Categories: Data;
Tags: Bee Canyon,
California,
Geomorphology,
Riverside County,
USGS Science Data Catalog (SDC), All tags...
United States,
climatologyMeteorologyAtmosphere,
debris flow,
geomorphology,
geoscientificInformation,
landslide inventory,
landslides, Fewer tags
|
Two UAS surveys were flown within the 2020 Glass fire extent designated as Glass 1 with 338 images and Glass 3 with 352. Both sites were flown at 50m AGL using a 3DR Solo with a Ricoh GR II in a nadir position. The imagery was processed in WebODM with the following parameters: mesh-octree-depth=13, orthophoto-resolution=1,pc-filter=0,pc-quality=ultra. An orthomosiac and height-above-ground (HAG) raster were derived from both photogrammetry projects. The raster data released herein is a selected area of interest from both study sites. The point clouds are the full, raw dense-clouds; the centroids point file is a collection of hand digitized locations of the in-situ plots from each study site; and the csv is the observed...
|
From late December 2022 to January 2023, a series of atmospheric river storms produced widespread landsliding in the San Francisco Bay area of California. USGS scientists performed reconnaissance field work to document the extent of landsliding in the region and compiled reports of landslides from media and California Highway Patrol (CHP) reports. This data release documents locations of road cut and shallow hillslope landslides triggered between December 31, 2022 and January 18, 2023. This inventory is not intended to be a complete inventory, but a reporting of observations made with limited time and resources. The point locations include descriptions and associated attributes, described in the metadata. Media...
Categories: Data;
Tags: California,
Geomorphology,
Hydrology,
San Francisco Bay Area,
USGS Science Data Catalog (SDC), All tags...
United States,
atmospheric rivers,
debris flow,
geomorphology,
landslide inventory,
landslides, Fewer tags
|
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
|
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
|
View more...
|