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.

States L2 Landing Page Tabs

Filter Total Items: 1,119
Water quality sampling using a Niskin sampler from the Research Vessel Polaris at sunset on San Francisco Bay.
December 31, 2003

Water quality sampling on San Francisco Bay

USGS conducts water quality sampling to describe changes in water quality along the deep channel of the San Francisco Bay-Delta system. Sampling includes continuious sampling and discrete sampling. Here a water discrete water sample is collected using a Niskin sampler at sunset in north San Francisco Bay.

Attribution: Water Resources
Map of study areas and key geographic features in Sonoma and Mendocino Counties.
December 31, 2003

Map of study areas in Sonoma and Mendocino Counties.

Map of study areas and key geographic features in Sonoma and Mendocino Counties.

southern California neighborhood scarred by fire
December 15, 2003

Southern California Neighborhood Scarred by Wildfire

Southern California neighborhood scarred by wildfire.

December 11, 2003

PubTalk 12/2003 — What's Happening to Alaska's Glaciers?

Their Dynamic Response to Changing Climate and Other Factors

by Bruce F. Molnia, Research Geologist 

 

  • Although the oceans contain more than 95% of the Earth.s water, glaciers hold 75% of the fresh water
  • If all the world's glaciers melted, sea level would rise more than 250 feet
  • Of Alaska.s 2,000 or so
Attribution: Region 11: Alaska
November 20, 2003

PubTalk 11/2003 — Clean Power from the Earth's Heat

The Present and Future of Geothermal Energy

by John Sass, Geophysicist

 

  • Since ancient times, people have sought out geothermal hot springs for bathing, cooking, and supposed healing effects
  • In Iceland, nearly half the electrical power and all space heating are derived from geothermal sources
  • For Iceland
Image: Endangered California Condor
October 18, 2003

Endangered California Condor

An endangered California condor flies over the Bitter Creek National Wildlife Refuge, California. USGS scientists are helping managers understand how California condors use their habitat, gaining valuable information that will help inform not only which potential energy development sites are likely to have the least impact on condors but also which areas of Oregon might be

...
Attribution: Ecosystems
September 25, 2003

PubTalk 9/2003 — Beneath Crater Lake

An underwater volcanic landscape tells a complex tale

by Charles R. Bacon, Geologist
Visualizations presented by David W. Ramsey, Geologist

 

  • Crater Lake, a jewel of the National Park system, partly fills a caldera basin formed during a giant volcanic eruption 7,700 years ago
  • Deepest of all U.S.
August 28, 2003

PubTalk 8/2003 — Human Footprints on the Web of Life

Biodiversity and Increasing Population and Development in California

by Robert N.Fisher, Research Zoologist

  • Why does California lead the country in endangered species--why are so many reptiles and amphibians in decline?
  • Learn about the California lizard that keeps Lyme disease in check and the butterflies that prevented
July 31, 2003

PubTalk 7/2003 — Molten Paradise

Video Presentation and Discussion

Featuring the award-winning USGS video Molten Paradise-Kilaea Volcano by Stephen Wessells, introduced and discussed by Robert I. Tilling, Volcanologist

See-

  • The dramatic nonstop Pu'u O'o eruption, now entering its 21st year
  • Rivers of glowing lava flow through underground
Trawling for Delta Smelt
July 31, 2003

Trawling for Delta Smelt aboard the USGS Research Vessel Sentinel

Trawling for Delta Smelt using a Kodiak Trawl in the Sacramento River aboard the USGS Research Vessel Sentinel.

June 26, 2003

PubTalk 6/2003 — The Quakes, They Are A-comin'

New Estimates of Earthquake Hazard and Risk Across the Bay Region

By Michael Blanpied, Geophysicist

 

  • A USGS-led Working Group has used new ideas about Bay Area faults and earthquakes to revise the probabilities for future quakes
  • The slow movement of the Earth.s plates builds up stress that is relieved in violent
May 22, 2003

PubTalk 5/2003 — The National Map—Coming to Your Neighborhood!

Integrating and Sharing Geographic Information in the Public Domain

By Ken Osborn, Cartographer 

 

  • Begun by the USGS in 2001, The National Map is a 10-year vision for a seamless, constantly updated, national geospatial database
  • This vast public database will be continually updated through local
Filter Total Items: 992
USGS
December 10, 1997

A striking full-color map showing permafrost and ground ice over the Arctic and surrounding continental land masses has been released by the U.S. Geological Survey and will be displayed at the American Geophysical Union meeting in San Francisco this week. 

USGS
December 10, 1997

The ability to learn the magnitude and location of an earthquake almost as it’s happening and track rising flood waters are examples of the kind of "real-time" monitoring that enables anyone with a personal computer and access to the Internet to obtain information about natural hazards as they occur.

USGS
December 10, 1997

They don’t have bells and whistles, and you’ll probably never see one on "Baywatch," but the U.S. Geological Survey’s real-time, telemetered stream-gauges are proving their worth when it comes to saving lives and lessening flood damage

USGS
December 8, 1997

"Heavy breathing" at Yellowstone and heavy metals in the nation’s surface and ground-water are two subjects of more than 100 oral and poster presentations by scientists from the U.S. Geological Survey, at the annual meeting of the American Geophysical Union (AGU) in San Francisco, Dec. 8-12.

USGS
December 7, 1997

Otis Redding may have waxed eloquently about "Sitting By the Dock of the Bay," but its flying over the floor of San Francisco Bay that has scientists at the U.S. Geological Survey humming a happy tune these days.

USGS
December 7, 1997

The Hayward Fault is still the most dangerous earthquake fault in the San Francisco Bay area, according to U.S. Geological Survey scientists who will present the results from their latest research on that fault at the annual meeting of the American Geophysical Union, in San Francisco this week.

USGS
December 3, 1997

Free public lecture: U.S. Geological Survey Geologist Henry Moore presents the latest "dirt" on Mars; viewing Mars from Sojourner at 7 P.M. in the City Council Chambers, 701 Laurel Street, Menlo Park, Calif.

USGS
November 25, 1997

All offices of the U.S. Geological Survey will be closed Thursday, of course, to observe the Thanksgiving holiday, but will be open as usual on Friday, November 28.

USGS
October 29, 1997

The U.S. Geological Survey (USGS) today joined forces with other federal and state agencies to announce specific efforts to implement recommendations of this summer’s Lake Tahoe Presidential Forum, including creation of an Internet-based clearinghouse of scientific information for the Lake Tahoe area.

USGS
October 21, 1997

The presence of 125,000-year-old microfossils in the muds of San Francisco Bay may help engineers decide where and how to rebuild the San Francisco-Oakland Bay Bridge, according to a U.S. Geological Survey(USGS)scientist in Menlo Park, Calif.

USGS
September 2, 1997

The effects of ground-water development on ground-water levels and ground-water quality in the town of Atherton, Calif., is the focus of a report released by the U.S. Geological Survey , Department of the Interior.

USGS
August 8, 1997

More than 200 exhibits dealing with topics from ocean floor photography to the geology of Mars will be highlighted at the U.S. Geological Survey’s open house at its Western Region Center in Menlo Park, Calif., September 13 and 14.