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California

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Image: Support Column of Bridge
October 17, 1989

Support Column of Bridge

Support column of bridge across Struve Slough, Highway 1. Enlargement of hole where support enters the ground is an effect of lateral shaking, which caused the concrete to break up where the column joined the bridge and was instrumental in the roadbed collapse.

Image: Aerial View of Highway
October 17, 1989

Aerial View of Highway

Aerial view of collapsed sections of the Cypress viaduct of Interstate Highway 880.

Image: Head Scarp of Small Slide
October 17, 1989

Head Scarp of Small Slide

Head scarp of small slide at Redondo Beach. Scale is provided by the red-handled rock hammer, which is 30.5 cm (12 in.) long.

Image: Messages at Emergency Center
October 17, 1989

Messages at Emergency Center

Personal messages posted on van at Emergency Center.

A house with a broken foundation
October 17, 1989

House Torn Off Foundation

House torn off its foundation by the main shock.

Image: Landslide-Displaced Trees
October 17, 1989

Landslide-Displaced Trees

Landslide-displaced trees reflect earthquake-triggered slope failure along coastal bluff, New Brighton Beach area, Santa Cruz County.

Image: Fructure Cuts Roadbed
October 17, 1989

Fructure Cuts Roadbed

A fracture cuts the roadbed, curbs, and railings on the collapsed section of Highway 1 at Struve Slough.

Image: Aerial View of Highway
October 17, 1989

Aerial View of Highway

Aerial view of collapsed sections of the Cypress viaduct of Interstate Highway 880.

Image: Aerial View of Large Slides
October 17, 1989

Aerial View of Large Slides

Aerial view of large slides north of Fort Funston. A ground perspective of this slide is shown in photo 33.

Image: Car Crushed by Brick
October 17, 1989

Car Crushed by Brick

Vehicle crushed by collapse of unreinforced-brick masonry.

Image: Landslide Debris on Highway
October 17, 1989

Landslide Debris on Highway

Landslide debris blocks both eastbound lanes of Highway 17 near Summit Road.

Image: Liquefaction in Deposits of River
October 17, 1989

Liquefaction in Deposits of River

Liquefaction in recent deposits of the Pajaro River formed these sand volcanoes along extensional fissures in a field prepared for autumn planting near Pajaro, across the Pajaro River from Watsonville. Furrows are spaced about 1.2 m (4 ft) apart.

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USGS
April 15, 1997

Dr. Gordon Eaton, the national director of the U.S. Geological Survey in Reston, Va., will be one of the speakers at the Friday, April 18, 1997 dedication of Placer Hall on the California State University at Sacramento campus.

USGS
April 15, 1997

The presence of the U.S. Geological Survey in Placer Hall on the campus of California State University at Sacramento marks the latest chapter in the USGS’s long association with the study of earth sciences in California and cooperation with the state’s Division of Mines and Geology and its higher education system.

USGS
April 15, 1997

Methyl tert-butyl ether (MTBE) and its potential effects on air and water quality were the focus of a session Wed. and Thurs, April 16-17, 1997, at the American Chemical Society annual meeting in San Francisco, California. U.S. Geological Survey scientists will report on several studies of the occurrence and distribution of this compound in surface water and ground water during the session.

USGS
April 15, 1997

Methyl tert-butyl ether (MTBE) in the nation’s ground waters and surface waters will be the subject of papers and poster presentations by U.S. Geological Survey scientists at the American Chemical Society annual meeting, April 16-17, in San Francisco, Calif.

USGS
April 10, 1997

U.S. Geological Survey scientists are encouraged because they now know that they have the capability to explain the blind thrust faults of the Los Angeles region with seismic reflection methods, according to USGS researcher Dr. Rufus Catchings. 

USGS
March 17, 1997

A cooperative agreement with the University of Southern California (USC) for the operation of the Southern California Earthquake Center has been renewed by the U.S. Geological Survey.

USGS
February 18, 1997

LECTURE: -- "LIVING WITH GEOLOGIC HAZARDS IN SAN MATEO COUNTY" WILL BE THE SUBJECT OF THE NEXT U.S. GEOLOGICAL SURVEY’S FREE PUBLIC LECTURE.

USGS
February 13, 1997

"There is mounting evidence that Mars is a water-rich planet that may have experienced warmer climates, and therefore, life, in the past,"according to Michael Carr, an astrogeologist with the U.S.Geological Survey in Menlo Park, Calif.

USGS
January 19, 1997

LECTURE: -- "THE COLORADO RIVER IN THE GRAND CANYON" WILL BE THE SUBJECT OF THE NEXT U.S. GEOLOGICAL SURVEY’S FREE PUBLIC LECTURE.

USGS
January 8, 1997

Hydrologists and chemists from the U.S. Geological Survey will be on Mallard Island, near Pittsburg today, Jan. 8, collecting water and sediment samples from Bay-Delta waters to determine the amount of pesticides that are being washed into the Bay by this year’s floods on Bay-Delta rivers.

USGS
January 3, 1997

The floods have crested and are beginning to recede in most places in the Pacific Northwest. Nevertheless dozens of U.S. Geological Survey personnel, who were busy over the holidays measuring the high streamflows and keeping river stage monitors operating, are still busy in the field and in their offices. Field crews have been hampered by mudslides, road closures, and extremely dangerous condition

USGS
December 18, 1996

The good news is that sea water and wave action aren’t being too rough on some sections of the beach cliffs of the San Mateo County, Calif., coast; the bad news is that slumping caused by fresh water erosion is destroying some of the beach cliffs at rates of up to two meters per year, according to scientists with the U.S. Geological Survey in Menlo Park, Calif.