Loma Prieta earthquake

Loma Prieta earthquake
H.G. Wilshire, U.S. Geological Survey · Public domain · source
Name	Loma Prieta earthquake
Date	October 17, 1989
Magnitude	6.9
Depth	18 km
Epicenter	Loma Prieta Peak
Type	Oblique-slip
Countriesaffected	United States
Damage	$10 billion
Casualties	63

Loma Prieta earthquake. The Loma Prieta Peak earthquake occurred on October 17, 1989, during the World Series between the San Francisco Giants and the Oakland Athletics at Candlestick Park, causing widespread damage and loss of life in the San Francisco Bay Area, particularly in Santa Cruz County, Monterey County, and San Benito County. The earthquake was felt as far north as Eureka and as far south as Los Angeles, and was also felt in Nevada and Oregon. The earthquake was studied by USGS scientists, including David Oppenheimer and Thomas H. Heaton, who worked with Caltech and Stanford University researchers.

● Introduction

The Loma Prieta earthquake was a significant seismic event that occurred on October 17, 1989, at 5:04 p.m. local time, during the World Series between the San Francisco Giants and the Oakland Athletics at Candlestick Park. The earthquake was named after Loma Prieta Peak, the location of the earthquake's epicenter, which is situated in the Santa Cruz Mountains near Los Gatos and Soquel. The earthquake was studied by scientists from USGS, Caltech, and Stanford University, including Lucile Jones and Ross Stein, who worked with NEIC and ISC to determine the earthquake's magnitude and impact. The earthquake was also felt in nearby cities, including San Jose, Fremont, and Hayward, and was reported by KTVU, KRON-TV, and KPIX-TV.

● Geology of

the Earthquake The Loma Prieta earthquake occurred on a previously unknown section of the San Andreas Fault, which runs for over 1,200 km through California and is capable of producing large earthquakes, such as the 1906 San Francisco earthquake. The earthquake was an oblique-slip event, with a combination of strike-slip and dip-slip motion, and was characterized by a complex rupture process, involving multiple fault segments, including the San Andreas Fault and the Calaveras Fault. The earthquake was studied by geologists from USGS, including David Schwartz and James Lienkaemper, who worked with DOC and CGS to determine the earthquake's geological characteristics. The earthquake was also studied by researchers from UC Berkeley, UCLA, and USC, including John Vidale and Donna Eberhart-Phillips.

● Impact and Damage

The Loma Prieta earthquake caused widespread damage and loss of life in the San Francisco Bay Area, particularly in Santa Cruz County, Monterey County, and San Benito County. The earthquake damaged or destroyed over 12,000 buildings, including homes, businesses, and infrastructure, such as bridges and highways, including Interstate 880 and U.S. Route 101. The earthquake also caused significant damage to public transportation systems, including the BART and Caltrain systems, and was reported by FHWA and FTA. The earthquake was studied by engineers from ASCE and SEAOC, including Abolhassan Astaneh-Asl and Sashi Kunnath, who worked with NSF and NIST to determine the earthquake's impact on buildings and infrastructure.

● Emergency Response and Relief

The emergency response to the Loma Prieta earthquake was led by local, state, and federal agencies, including the FEMA, Cal OES, and the American Red Cross. The response efforts were supported by search and rescue teams from California and other states, including LACFD and FDNY, and were coordinated by EMAC and NEMA. The earthquake relief efforts were also supported by non-governmental organizations, including the Salvation Army and the United Way, and were reported by CNN, NBC News, and ABC News.

● Aftermath and Reconstruction

The aftermath of the Loma Prieta earthquake saw a significant reconstruction effort, with the rebuilding of damaged or destroyed buildings and infrastructure, including the Cypress Viaduct and the San Francisco-Oakland Bay Bridge. The reconstruction efforts were led by local, state, and federal agencies, including the Caltrans and the FHWA, and were supported by engineers and architects from ASCE and AIA. The earthquake also led to significant changes in building codes and emergency preparedness plans, including the development of the UBC and the IBC, and was studied by researchers from NIBS and NFPA.

● Scientific Significance and Legacy

The Loma Prieta earthquake was a significant scientific event, providing valuable insights into the geology and seismology of the San Andreas Fault and the San Francisco Bay Area. The earthquake was studied by scientists from USGS, Caltech, and Stanford University, including William Ellsworth and Gregory Beroza, who worked with NSF and NASA to determine the earthquake's scientific significance. The earthquake also led to significant advances in earthquake science, including the development of new seismic hazard assessment tools and early warning systems, such as the ShakeAlert system, and was reported by Science and Nature. The earthquake's legacy continues to be felt, with ongoing research and monitoring of the San Andreas Fault and the San Francisco Bay Area by scientists from USGS, Caltech, and Stanford University, including Jeanne Hardebeck and Eric Dunham. Category:Earthquakes in California