UTC time | 2006-02-22 22:19:07 |
---|---|
ISC event | 8096170 |
USGS-ANSS | ComCat |
Local date | February 23, 2006 |
Local time | 00:19 CAT |
Magnitude | 7.0 Mw [1] |
Depth | 11 kilometres (7 mi) |
Epicenter | 21°19′26″S33°34′59″E / 21.324°S 33.583°E |
Type | Dip-slip [2] |
Areas affected | Southern Mozambique |
Max. intensity | MMI IX (Violent) |
Aftershocks | 5.7 Mw Feb 23 at 01:23 [2] |
Casualties | 4 dead, 36 injured [2] |
The 2006 Mozambique earthquake occurred at 22:19 UTC on 22 February. It had a magnitude of 7.0 on the moment magnitude scale and caused 4 deaths and 36 injuries. The epicenter was near Machaze in Manica Province of southern Mozambique, just north of the Save River. It was the largest historical earthquake in Mozambique and the first earthquake in southern Africa to have an identified surface rupture. [3]
Southern Mozambique is at the southern end of the East Africa Rift system, where the African plate appears to be breaking into several smaller plates. [4] The Somali plate is moving westward relative to the Nubian Plate at a rate of several millimetres a year at the latitude of this earthquake. Most earthquakes in this zone are a result of either normal or strike-slip faulting.
The earthquake was felt throughout Mozambique and over a wide area of eastern southern Africa, including South Africa, Swaziland, Zambia, Zimbabwe and Botswana. [4] Close to the epicentre the shaking reached VIII in intensity on the Mercalli intensity scale. [5] In the cities of Beira, Inhambane and Maputo the intensity reached V.
The focal mechanism of the earthquake is consistent with normal faulting on a westerly dipping fault plane. Field investigations identified 15 km of surface rupture in the form of a west-facing scarp, with up to 2.05 m of vertical displacement, although it was not possible to prove the full extent of surface faulting due to lack of time and the presence of minefields. [3] Investigations using Interferometric synthetic aperture radar (InSAR), combined with field and seismological observations, have identified two fault segments with slightly differing strikes, with the hypocenter and most of the displacement being on the more southerly of the segments. [6]
Little damage was recorded, with only 294 buildings reported as damaged in the area between Espungabera, Beira and Chimoio. [5] A total of four deaths were recorded, one in Espungabera, one in Machaze and two in Beira, with a further thirty-six injured.
The 1999 Düzce earthquake occurred on 12 November at 18:57:22 local time with a moment magnitude of 7.2 and a maximum Mercalli intensity of IX (Violent), causing damage and at least 845 fatalities in Düzce, Turkey. The epicenter was approximately 100 km (62 mi) to the east of the extremely destructive 1999 İzmit earthquake that happened nearly three months earlier. Both strike-slip earthquakes were caused by movement on the North Anatolian Fault.
The 2006 Kamchatka earthquake occurred on April 21, 2006 at 12:25 PM local time. This shock had a moment magnitude of 7.6 and a maximum Mercalli intensity of X (Extreme). The hypocenter was located near the coast of Koryak Autonomous Okrug at an estimated depth of 22 km, as reported by the International Seismological Centre. This event caused damage in three villages and was followed by a number of large aftershocks. Two M6.6 earthquakes struck on April 29 at 16:58 UTC and again on May 22 at 11:12 UTC. These earthquakes caused no deaths; however, 40 people were reported injured.
The 1992 Landers earthquake occurred on Sunday, June 28 with an epicenter near the town of Landers, California, in San Bernardino County. The shock had a moment magnitude of 7.3 and a maximum Mercalli intensity of IX (Violent).
The 2002 Denali earthquake occurred at 22:12:41 UTC November 3 with an epicenter 66 km ESE of Denali National Park, Alaska, United States. This 7.9 Mw earthquake was the largest recorded in the United States in 37 years. The shock was the strongest ever recorded in the interior of Alaska. Due to the remote location, there were no fatalities and only one injury.
The 2007 Alum Rock earthquake occurred on October 30 at 8:04 p.m. Pacific Daylight Time in Alum Rock Park in San Jose, in the U.S. state of California. It measured 5.6 on the moment magnitude scale and had a maximum Mercalli intensity of VI (Strong). The event was then the largest in the San Francisco Bay Area since the 1989 Loma Prieta earthquake, which measured 6.9 on the moment magnitude scale, but was later surpassed by the 2014 South Napa earthquake. Ground shaking from the Alum Rock quake reached San Francisco and Oakland and other points further north. Sixty thousand felt reports existed far beyond Santa Rosa, as far north as Eugene, Oregon.
The 1915 Pleasant Valley earthquake occurred at 22:53:21 on October 2 in north-central Nevada. With a moment magnitude of 6.8, a surface wave magnitude of 7.7, and a maximum Mercalli intensity of X (Extreme), it was the strongest earthquake ever recorded in the state.
The 1911 Kebin earthquake, or Chon-Kemin earthquake, struck Russian Turkestan on 3 January. Registering at a moment magnitude of 8.0, it killed 452 people, destroyed more than 770 buildings in Almaty, Kazakhstan, and resulted in 125 miles (201 km) of surface faulting in the valleys of Chon-Kemin, Chilik and Chon-Aksu.
The 1971 Bingöl earthquake was a Mw6.6–6.7 earthquake that occurred at 18:44:02 local time on 22 May. It had a surface-wave magnitude of 6.9 and a maximum intensity of IX (Violent) on the Mercalli intensity scale, killing 755–1,000 people. Bingöl was largely destroyed, as well as many houses in the nearby Bingöl plain. Surface displacement of 38 km (24 mi) and various other surficial effects were directly caused by the earthquake.
The 1881 Nicobar Islands earthquake occurred at about 07:49 local time on 31 December, with an epicentre beneath Car Nicobar. It occurred as two separate ruptures, the largest of which had an estimated magnitude of 7.9 on the moment magnitude scale and triggered a tsunami that was observed around the Bay of Bengal. It is probably the earliest earthquake for which rupture parameters have been estimated instrumentally.
The 1932 Changma earthquake occurred at 10:04:27 local time on 25 December. With an estimated magnitude of 7.6 on the surface-wave magnitude scale, and a maximum felt intensity of X (Extreme) on the Mercalli intensity scale, the quake destroyed 1,167 houses and caused 275 to 70,000 deaths and 320 injuries.
The 1892 Laguna Salada earthquake occurred at 23:20 Pacific Standard Time on February 23. It had an estimated moment magnitude of 7.1–7.2 and a maximum perceived intensity of VIII (Severe). The shock was centered near the Mexico–United States border and takes its name from a large dry lake bed in Baja California, Mexico. There were no reported casualties, but the event affected the then largely-uninhabited areas of northern Mexico and Southern California.
An earthquake occurred in the northern Aegean Sea between Greece and Turkey on May 24, 2014. It had a moment magnitude of 6.9 and a maximum Mercalli intensity of VIII (Severe). Serious damage was reported on the Turkish island of Imbros and the cities of Edirne and Çanakkale, as well as on the Greek island of Lemnos. The earthquake was felt in Bulgaria and southern Romania. Several aftershocks followed the main shock, the strongest measuring 5.3 ML. This aftershock struck the Gulf of Saros at 12:31 local time.
The 1999 Aïn Témouchent earthquake occurred on December 22 at 18:36:56 local time in northern Algeria. The dip-slip event had a moment magnitude of 5.6 and a maximum Mercalli intensity of VII. At least 22 were killed, 175 were injured, and 15,000–25,000 were made homeless. The Belgian Centre for Research on the Epidemiology of Disasters' EM-DAT database and the USGS' National Geophysical Data Center both list financial losses of $60.93 million.
The 1930 Bago (Pegu) earthquake, also known as the Swa earthquake struck Myanmar on 5 May. The moment magnitude (Mw ) 7.4 earthquake had a focal depth of 35 km (22 mi) and maximum Rossi–Forel intensity of IX. The earthquake was the result of rupture along a 131 km (81 mi) segment of the Sagaing Fault—a major strike-slip fault that runs through the country. Extensive damage was reported in the southern part of the country, particularly in Bago and Yangon, where buildings collapsed and fires erupted. At least 550, and possibly up to 7,000 people were killed. A moderate tsunami was generated along the Burmese coast which caused minor damage to ships and a port. It was felt for over 570,000 km2 (220,000 sq mi) and as far as Shan State and Thailand. The mainshock was followed by many aftershocks; several were damaging; additional earthquakes occurred in July and December, killing dozens. The December earthquake was similarly sized which also occurred along the Sagaing Fault.
The Haiyuan Fault is a major active intracontinental strike-slip (sinistral) fault in Central Asia.
The 1988 Lancang–Gengma earthquakes, also known as the 11.6 earthquakes by the Chinese media were a pair of devastating seismic events that struck Lancang and Gengma counties, Yunnan, near the border with Shan State, Burma. The earthquake measured moment magnitude (Mw ) 7.0 and was followed 13 minutes later by a 6.9 Mw shock. These earthquakes were assigned a maximum China seismic intensity of IX and X, respectively. Between 748 and 939 people were killed; more than 7,700 were injured. Both earthquakes resulted in US$270 million in damage and economic losses. Moderately large aftershocks continued to rock the region, causing additional casualties and damage.
In 1954, the state of Nevada was struck by a series of earthquakes that began with three magnitude 6.0+ events in July and August that preceded the Mw 7.1–7.3 mainshock and M 6.9 aftershock, both on December 12. All five earthquakes are among the largest in the state, and the largest since the Cedar Mountain earthquake of 1932 and Pleasant Valley event in 1915. The earthquake was felt throughout much of the western United States.
The 1973 Luhuo earthquake struck near the town of Zhaggo in Garzê Tibetan Autonomous Prefecture of Sichuan Province, China on February 6, 1973, with a magnitude of 7.6 Ms. The earthquake had a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale. It resulted in between 2,175 and 2,204 deaths and a further 2,743 injuries. Serious and widespread destruction occurred in Luhuo County.
The 1979 Saint Elias earthquake affected Alaska at 12:27 AKST on 28 February. The thrust-faulting Mw 7.5 earthquake had an epicenter in the Granite Mountains. Though the maximum recorded Modified Mercalli intensity was VII, damage was minimal and there were no casualties due to the remoteness of the faulting. Damage also extended across the border in parts of Yukon, Canada.
In 1990, present day South Sudan was rocked by a series of violent earthquakes. It started with the largest event (Mw 7.2), and continued with multiple very large aftershocks for the next couple of months. The earthquake sequence ruptured over a length of 50 km (31 mi). It contains some of the largest recorded earthquakes anywhere in Africa.