Unified Interior Regions

California

The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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Filter Total Items: 517
Date published: January 1, 2017

Backscatter [Fugro]--Offshore of Gaviota Map Area, California

This part of DS 781 presents 2-m-resolution data collected by Fugro Pelagos for the acoustic-backscatter map of the Offshore of Gaviota Map Area, California. The GeoTiff is included in "Backscatter_[Fugro]_OffshoreGaviota.zip," which is accessible from https://doi.org/10.5066/F7TH8JWJ. These data accompany the pamphlet and map sheets of Johnson, S...

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 flood-hazard depth and duration projections: 1-year storm in Ventura County

Maximum depth of flooding surface (in cm) in the region landward of the present day shoreline that is inundated for the storm condition and sea-level rise (SLR) scenario indicated. Note: Duration datasets may have occasional gaps in open-coast sections.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of k

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 flood-hazard depth and duration projections: 20-year storm in Ventura County

Maximum depth of flooding surface (in cm) in the region landward of the present day shoreline that is inundated for the storm condition and sea-level rise (SLR) scenario indicated. Note: Duration datasets may have occasional gaps in open-coast sections.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of k

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 water-level projections: 20-year storm in Orange County

Model-derived total water levels (in meters) for the given storm condition and sea-level rise (SLR) scenario.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.0 for Souther

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 ocean-currents projections: 1-year storm in Ventura County

Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 wave-hazard projections: 100-year storm in Orange County

Model-derived significant wave height (in meters) for the given storm condition and sea-level rise (SLR) scenario.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.0 for So

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 ocean-currents projections: average conditions in Los Angeles County

Projected Hazard: Model-derived ocean current velocities (in meters per second) for the given storm condition and sea-level rise (SLR) scenario.
Model Summary: The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-l

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 flood-hazard projections: 100-year storm in Orange County

Geographic extent of projected coastal flooding, low-lying vulnerable areas, and maxium/minimum flood potential (flood uncertainty) associated with the sea-level rise and storm condition indicated.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosi

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 wave-hazard projections: 20-year storm in Ventura County

Model-derived significant wave height (in meters) for the given storm condition and sea-level rise (SLR) scenario.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.0 for So

Date published: January 1, 2017

Ascii grids of predicted pH in depth zones used by domestic and public drinking water supply depths, Central Valley, California

The ascii grids associated with this data release are predicted distributions of continuous pH at the drinking water depth zones in the groundwater of Central Valley, California. The two prediction grids produced in this work represent predicted pH at the domestic supply and public supply drinking water depths, respectively and are bound by the alluvial boundary that defines the Central Valle...

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 flood-hazard depth and duration projections: average conditions in Ventura County

Maximum depth of flooding surface (in cm) in the region landward of the present day shoreline that is inundated for the storm condition and sea-level rise (SLR) scenario indicated. Note: Duration datasets may have occasional gaps in open-coast sections.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of k

Date published: January 1, 2017

CoSMoS (Coastal Storm Modeling System) Southern California v3.0 Phase 2 wave-hazard projections: 20-year storm in Santa Barbara County

Model-derived significant wave height (in meters) for the given storm condition and sea-level rise (SLR) scenario.
The Coastal Storm Modeling System (CoSMoS) makes detailed predictions (meter-scale) over large geographic scales (100s of kilometers) of storm-induced coastal flooding and erosion for both current and future sea-level rise (SLR) scenarios. CoSMoS v3.0 for So

Filter Total Items: 985
Map of the seafloor showing its characteristics which include long, linear features that are earthquake fault zones.
December 31, 2016

Offshore of Point Estero

Seafloor offshore of Point Estero (PE) showing east (EH) and west (WH) strands of the Hosgri fault zone. Arrow points to a seafloor slope (a 12,000 year old shoreline) that has been offset by the east Hosgri strand, indicating a slip rate of about 2.6 millimeters per year.

One woman explaining something to another who is listening and smiling.
December 31, 2016

Interior Secretary Sally Jewell and USGS geophysicist Stephanie Ross

At the 2016 AGU Fall Meeting, USGS geophysicist Stephanie Ross (right) speaks with Interior Secretary Sally Jewell about ways to help decision makers, emergency responders, and other stakeholders use scientific findings about tsunamis. Photo credit: USGS

Large waves crashing on rocks at beach.
December 31, 2016

Storm waves in Santa Cruz

Large storm waves crashing on the rocks near Santa Cruz, California

Map of offshore southern California showing the contours of the seafloor, with labels pointing to circles showing landslides.
December 31, 2016

Large submarine slides off southern California

Large submarine slides off southern California (outlined in small white dots). Low-resolution bathymetry shown in light grey (approximately 100 meters/pixel). High-resolution bathymetry shown in darker grey (less than 20 meters/pixel).

Yosemite Toad
December 31, 2016

Yosemite Toad Vocalization

Amphibians’ permeable skin makes them incredibly sensitive to changes in their environment. Scientists and conservationists alike are using them as “sentinel species” that could provide early warnings of ecosystem change and stress affecting them and other organisms. Next time you are out, stop and listen. Do you hear them?
 

banding of Panum pumice and obsidian
December 31, 2016

Flow banding of Panum pumice and obsidian

Flow banding of Panum pumice and obsidian of the same composition.

Map of the San Joaquin Valley displaying contours of land subsidence that occurred from 2008 to 2010.
December 31, 2016

2008-2010 Land Subsidence Contours, San Joaquin Valley, California

Land subsidence contours showing vertical changes in land surface in the central San Joaquin Valley area, California, during January 8, 2008-January 13, 2010. The top graph illustrates elevation changes computed from repeat geodetic surveys along Highway 152 for 1972-2004. The bottom graph depicts elevation changes computed from repeat geodetic surveys along the Delta-

...
map of San Joaquin Valley shaded by 2008-2010 subsidence in millimeters
December 31, 2016

Subsidence (2008-2010), San Joaquin Valley, California

Map showing estimated regions of subsidence derived from interferograms for 2008–2010 and selected surface-water conveyance infrastructure in the San Joaquin Valley area of the Central Valley, California.

Image shows a sample of elbaite on a black background
December 31, 2016

Elbaite

Elbaite is one of the best-known members of the tourmaline mineral family, particularly for its high-quality gemstones. Read more about the tourmaline mineral family here

Sample provided by Carlin Green, USGS. Sample originated from Himalaya Mine, California, and is 4

...
man pointing to image on computer screen in an office setting
December 31, 2016

Geologist explains photo analysis of Calif. coastal cliffs

USGS research geologist Jon Warrick explains how his team applied structure-from-motion analysis to photos from the California Coastal Records Project to measure coastal change. Jon Warrick explains a “difference map” constructed from structure-in-motion data. Red areas indicate loss of material (erosion); blue areas show addition of material (deposition).

December 13 - 14, 2016 Long Valley Caldera earthquake swarm recorde...
December 14, 2016

Dec. 13 - 14, 2016 Long Valley Caldera earthquake swarm recorded on...

December 13 - 14, 2016 Long Valley Caldera earthquake swarm recorded on instrument MDH1 webicorder. Swarm begins at 23:28 PST.

Filter Total Items: 934
USGS science for a changing world logo
September 20, 2011

Groundwater is among United States' most important natural resources. This hidden resource provides half of our drinking water, enables sustained economic growth to agriculture other industries, and contributes to the health of ecosystems throughout the country. 

USGS science for a changing world logo
August 23, 2011

Scientists around the world are exploring many different methods, including repeat photography, to better understand today's changing environmental conditions. Thursday's lecture,"Through the Lens of Time," explains the techniques in repeat, or “time-lapse,” photography being used to monitor landscapes by tracking and studying changing climates and environmental conditions.

USGS science for a changing world logo
August 22, 2011

A report cooperatively produced and published by the U.S. Geological Survey and the California Geological Survey contains a map and associated datasets that inventory 290 locations of reported natural asbestos occurrences in California.

Image: Coso Volcanic Field Tumulus
August 16, 2011

A new design for the USGS Volcano Science Center (VSC) web pages is now open for internal viewing. This site has not been fully developed yet, and there are still many holes to fill. The launch is meant to give VSC staff a preview into the new database-driven website design.

USGS science for a changing world logo
August 15, 2011

On Aug. 16, the USGS will debut a new film, “Lake of the Sky: USGS Tahoe Basin Science,” on scientific research in the Lake Tahoe Basin at the 15th Annual Lake Tahoe Summit "Stewardship and Sustainability in Challenging Fiscal Times" sponsored by Senator Diane Feinstein, at Homewood Mountain Ski Resort in California. 

USGS science for a changing world logo
August 15, 2011

A new and comprehensive geologic map of Lassen Volcanic National Park allows land managers, first responders and engineers to better assess volcanic hazards in the park and its vicinity, and provides a framework for all future earth science research in the area.

USGS science for a changing world logo
August 12, 2011

The public is invited to the Loomis Museum in Lassen Volcanic National Park on Wednesday, August 17 from 10:30 a.m. to 11:30 a.m. for the unveiling of a spectacular new map and booklet that interprets the detailed geology of the park. The U.S. Geological Survey and the Park are pleased to announce a special public presentation by USGS scientists to unveil their new landmark publication, the "

Screenshot Location of Lassen Volcanic Center
August 12, 2011

The U.S. Geological Survey and Lassen Volcanic National Park are pleased to announce a special public presentation by USGS scientists to unveil, the "Geologic Map of Lassen Volcanic National Park and Vicinity," a map and booklet that interprets the detailed geology of the park.

USGS science for a changing world logo
August 11, 2011

Science papers, posters, and other types of information used to inform and update Klamath Basin public and private sector stakeholders at the 2010 Klamath Basic Science Conference have been published by the USGS in an Open File Report that is now available online.

USGS science for a changing world logo
August 9, 2011

This July, researchers from the U.S. Geological Survey and National Park Service discovered that California Common Murre (Uria aalge californica) chicks had hatched on the Channel Islands for the first time since 1912.

USGS science for a changing world logo
August 1, 2011

Marine biologists are setting up camp in Forks this week, and sea otters will be their quarry on a three-week expedition. Researchers from the U.S. Geological Survey, Seattle Aquarium, Monterey Bay Aquarium and other institutions are studying the health of local sea otters to assess the condition of Washington’s nearshore ecosystem. 

CalVO staff assembled in the Rambo Auditorium, Menlo Park, CA...
August 1, 2011

Inquiries have come to the USGS regarding a potential eruption in the vicinity of Lavic Lake Volcanic Field (LLVF) in Southern California.