1994 northridge earthquake

The Antelope Valley Freeway in the aftermath of the 1994 Northridge earthquake. In 1994, the Los Angeles region was rocked by a massive 6.7 earthquake that crumbled freeways and left the city in panic. A magnitude 6.8 (Ms) earthquake centered under the community of Northridge in the San Fernando Valley shook the entire Los Angeles metropolitan area at 4:31 a.m. local time on Monday, January 17, 1994. Select from premium 1994 Northridge Earthquake of the highest quality. January 20, 1994 — Interstate 5 Freeway overpass as seen from The Old Road in the Newhall Pass. Shake Map Northridge 1994.jpg 612 × 718; 114 KB. Known as the Northridge Earthquake, it caused at least 57 fatalities (a subsequent study put the death toll at 72, including heart attacks) and injured thousands. Wikipedia. As I recall, I was then engaged in updating the basis of the City's entire Precise Benchmark Index from the National Geodetic Vertical Datum of 1929 (NGVD29) to the North American Vertical Datum of 1988 (NAVD88). The 1994 Northridge earthquake killed more than 50 people and created widespread devastation in Los Angeles. The Northridge earthquake occurred at 4:30 a.m. local time on January 17, 1994. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Our editors will review what you’ve submitted and determine whether to revise the article. The 1994 Northridge earthquake killed more than 50 people and created widespread devastation in Los Angeles. Let us know if you have suggestions to improve this article (requires login). 1994 Northridge earthquake. While every effort has been made to follow citation style rules, there may be some discrepancies. 1 Three counties, Los Angeles, Ventura and Orange were affected by the Information from its description page there is shown below. In retrospect, it appeared that the profession was caught largely unaware by the 1994 Northridge earthquake and did not expect the kinds of damage that occurred, particularly in the newer buildings, since the code had been modified significantly just 20 years before, along with other improvements in the intervening years. The earthquake's epicenter was in Northridge, CA, and it was a magnitude 6.7 shock that proved to be the most costly earthquake in United States history. Size of this PNG preview of this SVG file: 618 × 343 pixels. As a consequence of the severe losses caused by this event, the Federal Emergency Management Agency (now under the U.S. Department of Homeland Security) awarded the California Geological Survey nearly $20 million to accelerate the zoning of earthquake hazards under the Seismic Hazards Mapping Act of 1990. 1994 Northridge earthquake.svg 618 × 343; 1.32 MB. Northridge earthquake of 1994, earthquake that struck the densely populated San Fernando Valley in southern California, U.S., on Jan. 17, 1994. Northridge earthquake of 1994, earthquake that struck the densely populated San Fernando Valley in southern California, U.S., on Jan. 17, 1994. Earthquakes similar to or like. Northridge Earthquake Photo Collection Browse Collection About The Northridge Earthquake Photo Collection contains a series of photographs taken by Geography Department staff members in the days and months after the 1994 Northridge earthquake. Thousands of landslides occurred throughout the mountains surrounding the San Fernando Valley and as far north as Castaic Lake. Destroyed in the Northridge earthquake of Jan. 17, 1994. What's Changed Since the 1994 Northridge Earthquake On Jan. 17, 1994, a magnitude-6.7 earthquake revealed some of the safety issues that Southern California needed to address The Northridge earthquake is part of the temporal increase in earthquake activity in the Los Angeles area since 1970. Please refer to the appropriate style manual or other sources if you have any questions. The 1994 Northridge earthquake, however, resulted in … Earthquake Hazards Zone Application (EQ Zapp), Highway Corridor Landslide Hazard Assessment, School, Hospital, and Environmental Reviews, EQ Zapp (A-P Fault Zones and Seismic Hazard Zones), Information Warehouse (reports, maps, and data), Center for Engineering Strong Motion Data, Visit the California Integrated Seismic Network. The earthquake was a right-lateral strike-slip event, and involved the rupture of several different faults over a length of 75 to 85 km (47 to 53 mi). The 1994 "Northridge" earthquake hit the Los Angeles area about 4:30 AM on Martin Luther King Day. The percentage of buildings completely destroyed was relatively low in light of the strength of the ground motions. The Antelope Valley Freeway in the aftermath of the 1994 Northridge earthquake. INTRODUCTION: This paper describes the 1994 Northridge earthquake experience of the local emergency medical services (EMS) agency. Reducing the impact of these ground-failure hazards, not only save lives and property during future earthquakes, but leads to more sustainable economic communities. Most of the casualties occurred in wood-frame apartment buildings, popular in the San Fernando Valley, and particularly in those with weak first floors or lower-level parking garages. The rubble was recycled. Description. Northridge is located about 30 km northwest of Los Angeles. Once special studies are performed by qualified engineers and geologists, measures to physically mitigate these ground-failure hazards are included in the development plans before permits are issued. Updates? Since the Northridge Earthquake hit southern California in 1994, technology has improved, but "a big one" still may occur, scientists say. 1994 NORTHRIDGE EARTHQUAKE: DAMAGE TO A FOUR-STORY STEEL BRACED FRAME BUILDING AND ITS SUBSEQUENT UPGRADE Dominic J KELLY1, David R BONNEVILLE2 And Stacy J BARTOLETTI3 SUMMARY In 1988, the Hewlett-Packard Company (HP) initiated a seismic program consisting of a preliminary seismic evaluation plan and a post-earthquake response plan. What's Changed Since the 1994 Northridge Earthquake On Jan. 17, 1994, a magnitude-6.7 earthquake revealed some of the safety issues that Southern California needed to address At the moment of the 1994 Northridge Earthquake, centered in the San Fernando Valley of the City of Los Angeles, I staffed the geodetic desk of the City's Survey Division. 1994 Northridge earthquake. Of particular importance was the need to increase the seismic resistance of hospitals. From January 24 through March 15, 1994, 170 persons with laboratory evidence of acute coccidioidomycosis * were identified in Ventura County, California. During the earthquake, CGS ground motion instruments recorded horizontal accelerations of 1.25g and vertical accelerations of 1.2g (1g = force of gravity). The earthquake lasted for 10-20 seconds but that didn’t limit the damage in any substantial way because the earthquake had a magnitude of 6.7. Since the Northridge event, over 6,000 square miles of land covering the greater Los Angeles Metropolitan Area, including all of Orange County and half of Ventura County, and portions of the San Francisco Bay Area have been zoned under the Act. The Northridge earthquake also resulted in societal impacts that have fundamentally changed the approach for disaster mitigation. Timeline: The 1994 Northridge Earthquake A look at events of the Jan. 17, 1994, Northridge earthquake By Jason Kandel • Published January 16, 2014 • Updated on January 17, 2018 at 7:52 am Since it occurred on Martin Luther King Day and at 4:31 AM, the death tool was limited to 61 and injury count to 7,300. California engineers had classified and codified building irregularities as early as 1980s. Twenty-five years ago this week, a violent, pre-dawn earthquake shook Los Angeles from its sleep, and sunrise revealed widespread devastation, with dozens killed and $25 billion in damage. Shake Map Northridge 1994.jpg 612 × 718; 114 KB. Mike Hider (Saugus High 1983, son of Jerry Hider) said he "spent several days, 24 hours a day, hauling the concrete from those bridges right down the road to the intersection of Highway 126 and I-5. ADMIN; ATLAS; California Integrated Seismic Network: Southern California Seismic Network (Caltech, USGS Pasadena, and Partners) USGS National Earthquake Information Center, PDE; Additional Information Northridge was the epicenter of the 6.7 magnitude earthquake that occurred in the early morning of January 17, 1994 killing dozens of Earthquake Northridge California 1994. Twenty years ago, on Jan. 17, 1994, at 4:31 a.m., the Northridge earthquake struck Southern California — the 6.7-magnitude quake killed 60 people and … Earthquakes similar to or like 1994 Northridge earthquake. Earthquakes similar to or like. 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