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An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time period. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. The word tremor is also used for non-earthquake seismic rumbling.
A pride parade is an outdoor event celebrating lesbian, gay, bisexual, transgender, and queer (LGBTQ) social and self acceptance, achievements, legal rights, and pride. The events also at times serve as demonstrations for legal rights such as same-sex marriage. Most pride events occur annually, and some take place around June to commemorate the 1969 Stonewall riots in New York City, a pivotal moment in modern LGBTQ social movements. The parades seek to create community and honor the history of the movement. In 1970, pride and protest marches were held in Chicago, Los Angeles, New York City, and San Francisco around the first anniversary of Stonewall. The events became annual and grew internationally. In 2019, New York and the world celebrated the largest international Pride celebration in history: Stonewall 50 - WorldPride NYC 2019, produced by Heritage of Pride commemorating the 50th anniversary of the Stonewall Riots, with five million attending in Manhattan alone.
The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). The fault divides into three segments, each with different characteristics and a different degree of earthquake risk. The slip rate along the fault ranges from 20 to 35 mm /yr. It was formed by a transform boundary.
The Southern California Earthquake Center (SCEC) is a collaboration of more than 1,000 scientists across 100 research institutions with a mission to: conduct research on earthquakes in Southern California and elsewhere by gathering data, conducting theoretical studies, and performing computer simulations; integrate information into a comprehensive, physics-based understanding of earthquake phenomena; and communicate that understanding to end-users and society at large as useful knowledge for reducing earthquake risk and improving community resilience..
Field Day is an annual amateur radio exercise, widely sponsored by IARU regions and member organizations, encouraging emergency communications preparedness among amateur radio operators. In the United States, it is typically the largest single emergency preparedness exercise in the country, with over 30,000 operators participating each year. Field Day is always the fourth full weekend of June, beginning at 18:00 UTC Saturday and running through 20:59 UTC Sunday.
March for Jesus is an annual interdenominational event in which Christians march through towns and cities.
An earthquake warning system or earthquake early warning system is a system of accelerometers, seismometers, communication, computers, and alarms that is devised for notifying adjoining regions of a substantial earthquake while it is in progress. This is not the same as earthquake prediction, which is currently incapable of producing decisive event warnings.
Lucile M. Jones is a seismologist and public voice for earthquake science and earthquake safety in California. One of the foremost and trusted public authorities on earthquakes, Jones is viewed by many in Southern California as the "seismologist-next-door," who is frequently called up on to provide information on recent earthquakes.
The 2008 Chino Hills earthquake occurred at 11:42:15 am PDT on July 29 in Southern California. The epicenter of the magnitude 5.4 earthquake was in Chino Hills, c. 28 miles (45 km) east-southeast of downtown Los Angeles. Though no lives were lost, eight people were injured, and it caused considerable damage in numerous structures throughout the area and caused some amusement park facilities to shut down their rides. The earthquake led to increased discussion regarding the possibility of a stronger earthquake in the future.
At 5:12 a.m. PST on Wednesday, April 18, 1906, the coast of Northern California was struck by a major earthquake with an estimated moment magnitude of 7.9 and a maximum Mercalli intensity of XI (Extreme). High-intensity shaking was felt from Eureka on the North Coast to the Salinas Valley, an agricultural region to the south of the San Francisco Bay Area. Devastating fires soon broke out in San Francisco and lasted for several days. More than 3,000 people died, and over 80 percent of the city was destroyed. The events are remembered as one of the worst and deadliest earthquakes in the history of the United States. The death toll remains the greatest loss of life from a natural disaster in California's history and high on the lists of American disasters.
The Earthquake Engineering Research Institute (EERI) is a leading technical society in dissemination of earthquake risk and earthquake engineering research both in the U.S. and globally. EERI members include researchers, geologists, geotechnical engineers, educators, government officials, and building code regulators. Their mission, as stated in their 5-year plan published in 2006, has three points: "Advancing the science and practice of earthquake engineering; Improving understanding of the impact of earthquakes on the physical, social, economic, political, and cultural environment; and Advocating comprehensive and realistic measures for reducing the harmful effects of earthquakes".
The Puente Hills Fault is an active geological fault that is located in the Los Angeles Basin in California. The thrust fault was discovered in 1999 and runs about 40 km (25 mi) in three discrete sections from the Puente Hills region in the southeast to just south of Griffith Park in the northwest. The fault is known as a blind thrust fault, as the fault plane does not extend to the surface. Large earthquakes on the fault are relatively infrequent but computer modeling has indicated that a major event could have substantial impact in the Los Angeles area. The fault is now thought to be responsible for one moderate earthquake in 1987 and another light event that took place in 2010, with the former causing considerable damage and deaths.
Thrill the World is an annual international dance event and world record breaking attempt, in which participants simultaneously emulate the zombie dance seen in the music video of Michael Jackson's "Thriller". The dancers perform in unison at locations throughout the world, and can range from kids and pre-teens to the elderly. Ines Markeljevic created the event "Thrill Toronto" where she taught a group of 62 zombies the dance in a mere couple of hours and they set the first Guinness World Records for Largest Thriller Dance in one location, at a community hall in Canada. Ines Markeljevic is dance instructor and entrepreneur from Toronto, Canada, whose personal mission is to unite the world through dance.
The 2010 Baja California earthquake occurred on April 4 with a moment magnitude of 7.2 and a maximum Mercalli intensity of VII. The shock originated at 15:40:41 local time south of Guadalupe Victoria, Baja California, Mexico.
An ARkStorm is a hypothetical scientifically realistic "megastorm" scenario developed and published by the Multi Hazards Demonstration Project (MHDP) of the United States Geological Survey, based on historical occurrences. It describes an extreme storm that could devastate much of California, causing up to $725 billion in losses, and affect a quarter of California's homes. The event would be similar to exceptionally intense California storms that occurred between December 1861 and January 1862, which dumped nearly 10 feet (3,000 mm) of rain in parts of California over a period of 43 days. The name "ARkStorm" means "atmospheric river (AR) 1,000 (k)" as the storm was originally projected as a 1-in-1000-year event.
The Safe America Foundation is a 501(c)(3) non-profit organization working nationally and headquartered in Marietta, Georgia. The organization was founded in 1994 and partners with corporate, government, public and private sector organizations and non-profit organization to improve the awareness of safety and preparedness in the United States. The Safe America Foundation operates an Emergency Preparedness program and Driver Education program.
School Safety Preparedness Drill (SSPD) is an annual earthquake preparedness drill being organised in schools of North and North Eastern states of India commemorating 4 April 1905 Kangra earthquake.
A safety drill is a drill that is practised to prepare people for an emergency.
At 7:09 AM MDT on March 18, 2020, a 5.7 magnitude earthquake hit Salt Lake City, Utah, United States, with an epicenter 6 km (3.7 mi) north-northeast of Magna, Utah, beneath the site of the planned Utah Inland Port. It was the first major earthquake to occur within the Salt Lake Valley since the city was founded, the state's strongest earthquake since the 1992 St. George earthquake, and the first earthquake of comparable magnitude to occur near Salt Lake City since 1962, when a magnitude 5.0 earthquake struck a similar location in Magna.
The 2020 Sparta earthquake was a relatively uncommon intraplate earthquake that occurred near the small town of Sparta, North Carolina, on August 9, 2020 at 8:07 am local time. The earthquake had a moment magnitude of 5.1, and a shallow depth of 7.6 kilometres (4.7 mi). Shaking was reported throughout the Southern, Midwestern, and Northeastern United States. It was the strongest earthquake recorded in North Carolina in 104 years, the second-strongest in the state's history, and the largest to strike the East Coast since the 2011 Virginia earthquake.
References
- ↑ Alliance, Earthquake Country. "Millions of California Residents to Participate in ShakeOut, the World's Largest Earthquake Drill". www.prnewswire.com. Retrieved 2018-01-23.
- ↑ Jia-Rui Chong and Bob Pool, "Fake 'Big One' hits Southland", Los Angeles Times , November 14, 2008.
- ↑ "Massive earthquake drill planned in California". Xinhua News Agency. June 4, 2008. Archived from the original on June 8, 2008. Retrieved 2008-06-24.
- ↑ "Great ShakeOut called great success", Orange County Register , October 21, 2010.
- ↑ "Get Ready to ShakeOut!". shakeout.org. Retrieved June 24, 2010.
- ↑ "Great California ShakeOut: 9.4 million Drop, Cover, and Hold On", Insurance Journal , November 5, 2013.
- ↑ "Californians Hold Annual 'ShakeOut' Earthquake Drill".
- ↑ "ShakeOut Statistics".