Unified Interior Regions

California

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Image: Landslide North of Fort Funston
October 17, 1989

Landslide North of Fort Funston

Landslide north of Fort Funston. Slide mass contains approximately 2,830 cubic meters (3,700 cubic yards) and is 30 m (100 ft) high. Photo 35 provides an aerial view of this slide.

Image: Residents Camped in Yards
October 17, 1989

Residents Camped in Yards

Many residents camped in their yards after the earthquake.

Image: Structural Failure of House
October 17, 1989

Structural Failure of House

Construction on fill and the absence of adequate shear walls contributed to the failure of this structure.

Image: Collapsed Wall
October 17, 1989

Collapsed Wall

Close-up of collapsed wall of unreinforced masonry, Medico Dental Building in the Pacific Garden Mall.

Image: Support Columns of Highway
October 17, 1989

Support Columns of Highway

Support columns of Highway 1 bridge across Struve Slough protrude through roadbed. This resulted from collapse of the roadbed after the effects of lateral shaking shown in photo 98.

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: Liquefaction in Deposits of River
October 17, 1989

Liquefaction in Deposits of River

Liquefaction in recent deposits of San Lorenzo River caused cracking and differential settling of river levee southeast of Riverside Avenue Bridge. Bridge piers and the north abutment area were also damaged by liquefaction.

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.

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USGS
May 29, 1997

Selected, local editions of U.S. Geological Survey topographic maps will be available for purchase at the USGS exhibit that will be part of the San Francisco Bay Trail Project’s National Trails Day Festival, Saturday, June 7, at Robert Crown Memorial State Beach and Crab Cove Visitor’s Center in Alameda.

USGS
April 15, 1997

Peat soils in the Sacramento-San Joaquin Delta and their relationship to water quality; the history and consequences of long-term groundwater use in the Mojave Desert; the hydrology, biology and geology of San Francisco Bay; 

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.