Geotechnical and Strong Motion Earthquake Data from U.S. Accelerograph Stations, Ferndale, Cholame, and El Centro, California. Volume I: Fid-Bau Portal

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Geotechnical and Strong Motion Earthquake Data from U.S. Accelerograph Stations, Ferndale, Cholame, and El Centro, California. Volume I

Seismic and geotechnical data for seismograph stations located in Ferndale, Cholame (No. 2), and El Centro, California, are presented. At Ferndale, the investigations indicate that there is a surficial layer of silty clay with shear velocity (Vs) of about 500 fps, becoming stiffer between 25 and 42 feet with Vs of 800 fps. Between depths of 42 and 153 feet, Vs increases to a value of 2,000 fps. Materials from 153 to 172 feet are very dense, fine to coarse sands and gravels. At Cholame No. 2, the materials are primarily stiff to very stiff clays and silts overlying dense sands and silts. The upper 150 feet has a shear wave velocity between 500 and 1,000 fps. The sands below this have increasing velocity with depth and reach 2,000 fps at 200 feet. At El Centro, the subsurface soils are stiff to hard clays with very dense, fine sand. From the surface to a depth of 114 feet, Vs varies between 400 and 1,000 fps. From this depth to the bottom of the borings at 400 feet, there is a silty clay with occasional zones of very dense, silty, fine sand. The shear wave velocity varies from about 1,000 fps at 100 feet to about 1,500 fps at 400 feet.

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Geotechnical and Strong Motion Earthquake Data from U.S. Accelerograph Stations, Ferndale, Cholame, and El Centro, California. Volume I

Seismic and geotechnical data for seismograph stations located in Ferndale, Cholame (No. 2), and El Centro, California, are presented. At Ferndale, the investigations indicate that there is a surficial layer of silty clay with shear velocity (Vs) of about 500 fps, becoming stiffer between 25 and 42 feet with Vs of 800 fps. Between depths of 42 and 153 feet, Vs increases to a value of 2,000 fps. Materials from 153 to 172 feet are very dense, fine to coarse sands and gravels. At Cholame No. 2, the materials are primarily stiff to very stiff clays and silts overlying dense sands and silts. The upper 150 feet has a shear wave velocity between 500 and 1,000 fps. The sands below this have increasing velocity with depth and reach 2,000 fps at 200 feet. At El Centro, the subsurface soils are stiff to hard clays with very dense, fine sand. From the surface to a depth of 114 feet, Vs varies between 400 and 1,000 fps. From this depth to the bottom of the borings at 400 feet, there is a silty clay with occasional zones of very dense, silty, fine sand. The shear wave velocity varies from about 1,000 fps at 100 feet to about 1,500 fps at 400 feet.

Geotechnical and Strong Motion Earthquake Data from U.S. Accelerograph Stations, Ferndale, Cholame, and El Centro, California. Volume I

Seismic and geotechnical data for seismograph stations located in Ferndale, Cholame (No. 2), and El Centro, California, are presented. At Ferndale, the investigations indicate that there is a surficial layer of silty clay with shear velocity (Vs) of about 500 fps, becoming stiffer between 25 and 42 feet with Vs of 800 fps. Between depths of 42 and 153 feet, Vs increases to a value of 2,000 fps. Materials from 153 to 172 feet are very dense, fine to coarse sands and gravels. At Cholame No. 2, the materials are primarily stiff to very stiff clays and silts overlying dense sands and silts. The upper 150 feet has a shear wave velocity between 500 and 1,000 fps. The sands below this have increasing velocity with depth and reach 2,000 fps at 200 feet. At El Centro, the subsurface soils are stiff to hard clays with very dense, fine sand. From the surface to a depth of 114 feet, Vs varies between 400 and 1,000 fps. From this depth to the bottom of the borings at 400 feet, there is a silty clay with occasional zones of very dense, silty, fine sand. The shear wave velocity varies from about 1,000 fps at 100 feet to about 1,500 fps at 400 feet.

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Title:

Geotechnical and Strong Motion Earthquake Data from U.S. Accelerograph Stations, Ferndale, Cholame, and El Centro, California. Volume I

Publication date:

1975

Size:

344 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Geology & Geophysics , Soil & Rock Mechanics , Earthquakes , Soils , Subsurface investigations , Earth movements , Sands , Clays , Seismographs , California , Ferndale(California) , Cholame(California) , El Centro(California)

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