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1984 Morgan Hill Earthquake
The 1984 Morgan Hill earthquake (also known as the Halls Valley earthquake) occurred on April 24 at in the Santa Clara Valley of Northern California. The shock had a moment magnitude of 6.2 and a maximum Mercalli intensity scale, Mercalli intensity of VIII (''Severe''). The epicenter was located near Mount Hamilton (California), Mount Hamilton in the Diablo Range of the California Coast Ranges. Nearby communities (including Morgan Hill, California, Morgan Hill) sustained serious damage with financial losses of at least United States dollar, US$7.5 million. Earthquake The earthquake occurred along the Calaveras Fault, with the epicenter northeast of San Jose, California, San Jose, and at a depth of . The shock was felt in Sacramento, California, Sacramento in California's central valley. Damage The earthquake was reported to be felt over an area of . Morgan Hill, California, Morgan Hill was the worst affected, with a number of mobile homes sliding off foundations, and moderate d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calaveras Fault
The Calaveras Fault is a major branch of the San Andreas Fault System that is located in northern California in the San Francisco Bay Area. Activity on the different segments of the fault includes moderate and large earthquakes as well as aseismic creep. The last large event was the magnitude 6.2 1984 Morgan Hill event. The most recent moderate earthquakes were the magnitude 5.1 event on 25 October 2022, and the magnitude 5.6 2007 Alum Rock event. It is believed to link with the Hayward fault, as well as the West Napa Fault, north of the Carquinez Strait. It passes through or near the cities of Alamo, Danville, San Ramon, Dublin, Pleasanton, Sunol, Milpitas, San Jose, Gilroy, and Hollister. Location To the east of the Hayward-Rodgers Creek fault, the Calaveras fault extends , splaying from the San Andreas fault near Hollister and terminating at Danville at its northern end. It runs east of the San Andreas, diverging from it in the vicinity of Hollister, California, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacramento, California
) , image_map = Sacramento County California Incorporated and Unincorporated areas Sacramento Highlighted.svg , mapsize = 250x200px , map_caption = Location within Sacramento County in California , pushpin_map = California#USA , pushpin_label = Sacramento , pushpin_map_caption = Location within California##Location in the United States , pushpin_relief = yes , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_name1 = California , subdivision_type2 = County , subdivision_name2 = Sacramento ---- , subdivision_type3 = Region , subdivision_name3 = Sacramento Valley , subdivision_type4 = CSA , subd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1984 Earthquakes
Events January * January 1 – The Bornean Sultanate of Brunei gains full independence from the United Kingdom, having become a British protectorate in 1888. * January 7 – Brunei becomes the sixth member of the Association of Southeast Asian Nations (ASEAN). * January 10 ** The United States and the Vatican City, Vatican (Holy See) restore full diplomatic relations. ** The Victoria, Seychelles, Victoria Agreement is signed, institutionalising the Indian Ocean Commission. *January 24 – Steve Jobs launches the Macintosh 128K, Macintosh personal computer in the United States. February * February 3 ** Dr. John Buster and the research team at Harbor–UCLA Medical Center announce history's first embryo transfer from one woman to another, resulting in a live birth. ** STS-41-B: Space Shuttle Challenger, Space Shuttle ''Challenger'' is launched on the 10th Space Shuttle mission. * February 7 – Astronauts Bruce McCandless II and Robert L. Stewart make the first untethered spac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In California
The earliest known California earthquake was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also documented earthquakes. As Spanish missions were constructed beginning in the late 18th century, earthquakes records were kept. After the missions were secularized in 1834, records were sparse until the California Gold Rush in the 1840s. From 1850–2004, there was about one potentially damaging event per year on average, though many of these did not cause serious consequences or loss of life. Since the three damaging earthquakes that occurred in the American Midwest and the East Coast ( 1755 Cape Ann, 1811–12 New Madrid, 1886 Charleston) were well known, it became apparent to settlers that the earthquake hazard was different in California. While the 1812 San Juan Capistrano, 1857 Fort Tejo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Government Printing Office
The United States Government Publishing Office (USGPO or GPO; formerly the United States Government Printing Office) is an agency of the legislative branch of the United States Federal government. The office produces and distributes information products and services for all three branches of the Federal Government, including U.S. passports for the Department of State as well as the official publications of the Supreme Court, the Congress, the Executive Office of the President, executive departments, and independent agencies. An act of Congress changed the office's name to its current form in 2014. History The Government Printing Office was created by congressional joint resolution () on June 23, 1860. It began operations March 4, 1861, with 350 employees and reached a peak employment of 8,500 in 1972. The agency began transformation to computer technology in the 1980s; along with the gradual replacement of paper with electronic document distribution, this has led to a ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Seismological Centre
The International Seismological Centre (ISC) is a non-governmental, nonprofit organisation charged with the final collection, definitive analysis and publication of global seismicity. The ISC was formed in 1964 as an international organisation independent of national governments that would carry on the work of the International Seismological Summary in collecting and analyzing seismic data from around the world, and particularly to handle increased flow of data from the World-Wide Standard Seismograph Network (WWSSN), also established that year. The ISC considers its prime task to be the collection and re-analysis of all available earthquake seismic date in order to produce definitive data on earthquakes. The ISC's catalog is considered "the most complete and authoritative final depository of global earthquake parameter data." Purpose The main scientific goal of the Centre is the definitive compilation of earthquake information and the readings on which they are based. Collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In California
The earliest known California earthquake was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also documented earthquakes. As Spanish missions were constructed beginning in the late 18th century, earthquakes records were kept. After the missions were secularized in 1834, records were sparse until the California Gold Rush in the 1840s. From 1850–2004, there was about one potentially damaging event per year on average, though many of these did not cause serious consequences or loss of life. Since the three damaging earthquakes that occurred in the American Midwest and the East Coast ( 1755 Cape Ann, 1811–12 New Madrid, 1886 Charleston) were well known, it became apparent to settlers that the earthquake hazard was different in California. While the 1812 San Juan Capistrano, 1857 Fort Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1979 Coyote Lake Earthquake
The 1979 Coyote Lake earthquake occurred at on August 6 with a Moment magnitude scale, moment magnitude of 5.7 and a maximum Mercalli intensity scale, Mercalli Intensity of VII (''Very strong''). The shock occurred on the Calaveras Fault near Coyote Lake (Santa Clara County, California), Coyote Lake in Santa Clara County, California and resulted in a number of injuries, including some that required hospitalization. Most of the $500,000 in damage that was caused was non-structural, but several businesses were closed for repairs. Data from numerous strong motion instruments was used to determine the type, depth, and extent of slip. A non-destructive aftershock sequence that lasted throughout the remainder of the month was of interest to seismologists, especially with regard to fault creep, and following the event local governments evaluated their response to the incident. Tectonic setting The San Andreas Fault system (SAF) is a network of right-lateral Fault (geology)#Strike-slip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Clara County
Santa Clara County, officially the County of Santa Clara, is the sixth-most populous county in the U.S. state of California, with a population of 1,936,259, as of the 2020 census. Santa Clara County and neighboring San Benito County together form the U.S. Census Bureau's San Jose-Sunnyvale-Santa Clara metropolitan statistical area, which is part of the larger San Jose-San Francisco- Oakland combined statistical area. Santa Clara is the most populous county in the San Francisco Bay Area and in Northern California. The county seat and largest city is San Jose, the 10th-most populous city in the United States, California's third-most populous city and the most populous city in the San Francisco Bay Area. Home to Silicon Valley, Santa Clara County is an economic center for high technology, and in 2015 had the third-highest gross domestic product (GDP) per capita in the world (after Zürich, Switzerland and Oslo, Norway), according to the Brookings Institution. Located on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coyote, California
Coyote is an unincorporated community in a narrowing of Santa Clara ValleySome locals refer to this section of the Santa Clara Valley as " Coyote Valley", although it is not shown as such on maps. astride Coyote Creek, between San Jose and Morgan Hill's Madrone district, in Santa Clara County, California. Part of Coyote is inside the city limits of San Jose. Its ZIP Code is 95013; there is a small U.S. Post Office. It is inside telephone area codes 408 and 669. History Once the site of the ''Twelve Mile House'' (a stagecoach station on the Butterfield Overland Mail route), Coyote is notable for its historic Grange Hall, close to the Post Office and the Metcalf Energy Center. The town's name was changed from Burnett to Coyote because residents saw many coyotes in the area.''Eye on the Bay'' television segment broadcast on September 21, 2008 on KPIXCBS 5 The town nearly disappeared after U.S. Route 101 was rerouted as a freeway about one kilometer (0.6 mile) east of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Martin, California
San Martin or San Martín ( Spanish for Saint Martin) is a village and census-designated place (CDP) in Santa Clara County, California, in the southern Santa Clara Valley. Located to the south of Morgan Hill and north of Gilroy, San Martin is characterized by ranches, wineries, and orchards, as well as large estates in the foothills of the Santa Cruz Mountains. History San Martin was named after St. Martin of Tours, the patron saint of Santa Clara Valley pioneer Martin Murphy, a Mexican citizen who built the first Catholic church in the area. The community has considered incorporating as a city since 2004, but concerns over the community's small size and its ability to pay for municipal services have held efforts back. Other options considered have been annexation by Morgan Hill. Geography San Martin is located at (37.087746, -121.600020). It is approximately south of San Jose, California, north of Gilroy, California, and inland from the Pacific Coast. Lying in a roug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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