The magnitude 6.7 Northridge Earthquake occurred on January 17, 1994 at 4:31 AM, killing more than 60, injuring more than 9,000, and causing widespread damage throughout the west San Fernando Valley. For longtime Whittier residents, Oct. 1, 1987, is the day they’ll never forget. The ground shook horizontally and vertically for up to 10 seconds, most strongly in an area 30 miles (48 kilometers) in diameter around LA’s Northridge neighborhood, according to the public-private partnership Earthquake Country Alliance. It was felt as far away as Las Vegas.
The reports include plots of the uncorrected accelerations (phase 1 data), instrumented and baseline‑corrected acceleration, velocity and displacement (phase 2 data), as well as response and Fourier amplitude spectra (phase 3 data).
Like the Northridge earthquake, the smaller Whittier Narrows event of 1987 (M = 5.9) occurred on a blind thrust fault.
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It was 7:42 a.m. when the 5.9-magnitude Whittier Narrows earthquake struck. It is very similar to the fault that caused the magnitude 6.7 Northridge earthquake, which killed 57 people, left 20,000 people homeless and did $40 billion in damage. Principal faults exposed at the surface (purple lines) and urbanized areas of southern California (gray shaded area) are shown for comparison. October 17, 1989: $10 billion. 6.7 Northridge earthquake struck the Los Angeles region shortly before dawn on Monday January 17, 1994. Buildings crumbled in the 1994 Northridge earthquake, rated the most expensive in U.S. history. The deadly Whittier Narrows earthquake jolted Southern California at 7:42 a.m. on Oct. 1, 1987, marking the Los Angeles area’s most destructive earthquake in nearly two decades. See more ideas about Whittier california, Mary ellen mark and Northridge earthquake.
1981. 1994. Could Produce 7.0 Earthquake Like the 1987 Whittier Narrows Earthquake (M w 5.9), the Northridge earthquake was caused by the sudden rupture of a previously unknown, entirely subsurface, ‘blind’ thrust fault. This earthquake is similar to the Mw5.9 October 1, 1987 Whittier Narrows earthquake, located approximately 18 miles to the northwest. How-ever, the Whittier Narrows main shock was a pure east-west thrust faulting earthquake. Proceedings of American Institute of Steel Construction (AISC) Special Task Committee on the Northridge Earthquake Meeting, 14-15 March 1994. In many ways, Cal State Northridge began like many other Valley institutions: Trees were cleared and foundations poured at sites that were once orange, lemon or avocado groves. The Northridge Earthquake, Post Earthquake Investigation Report, California Department of Transportation, Division of Structures, 276pp. Jul 16, 2018 - Explore filipeferrazcou's board "Los Angeles 1987" on Pinterest. Building damage in the 1994 Northridge Earthquake was widespread, including collapses of both old and new structures. Campbell, K.W. Caltrans. CSUN History. 2. Earthquake Processed Data Reports document the results of digitization and processing of significant CSMIP records. Jul 16, 2018 - Explore filipeferrazcou's board "Los Angeles 1987" on Pinterest.