2010 Solomon Islands earthquake

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2010 Solomon Islands earthquake
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UTC  time2010-01-03 22:36:28
ISC  event 14287942
USGS-ANSS ComCat
Local date4 January 2010 (2010-01-04)
Local time09:36:28
Duration33 seconds
Magnitude7.1 Mw
Depth20 km (12 mi) [1]
Epicenter 8°52′S157°26′E / 8.87°S 157.44°E / -8.87; 157.44
Type Thrust
Areas affected Solomon Islands
Max. intensity MMI VI (Strong) [2]
Tsunami7 m (23 ft)
Foreshocks6.6 Mw Jan 3 at 21:48
Aftershocks6.8 Mw Jan 5 at 12:15
6.0 Mw Jan 5 at 13:11
6.2 Mw Jan 9 at 05:51
CasualtiesTwo injured

The 2010 Solomon Islands earthquake occurred with a moment magnitude of 7.1 on January 3 at 22:36:28 (UTC). A tsunami measuring approximately 10 feet (3.0 meters) affected some parts of the islands, while a maximum run-up height of 23.0 feet (7.0 meters) was recorded. The earthquake was the largest in a series of quakes to strike the Solomon Islands over the preceding days. [3] The 7.1 mainshock was preceded by a 6.6 magnitude foreshock some 48 minutes previous. As many as 1,000 people were left homeless on the island of Rendova after the earthquake and tsunami destroyed approximately 200 homes.

Contents

Earthquake

The shock was located 105 km (65 mi) southeast of Gizo, 210 km (130 mi) south west of Dadali, Santa Isabel and 295 km (183 mi) north west of Honiara, Guadalcanal. [4] The earthquake was centered under the sea floor near the town of Gizo, which was heavily damaged in the 2007 Solomon Islands earthquake. [5]

Characteristic

Analysis of trench deformation, tsunami run-up heights and wave height data from the ocean revealed that the earthquake was a slow-rupturing "tsunami earthquake". Such earthquakes rupture the upper 20 km portion of a subduction zone, while releasing less energy compared to an ordinary subduction zone earthquake. [6]

Effects

USGS ShakeMap of the Solomon Islands earthquake January 2010 Solomon Islands earthquake intensity USGS.jpg
USGS ShakeMap of the Solomon Islands earthquake

Landslides and tsunamis on the islands of Rendova and Tetepare. [3] A tsunami measuring up to 10 feet (3.0 meters) struck Rendova, destroying as many as 200 homes and leaving one-third of Rendova's population homeless. [3] A maximum runup of 7 m (23 ft) was recorded at Rendova Island. [6]

Approximately 1,000 residents have lost their residences, out of the total Rendovan population of just 3,600 people. The village of Retavo, which has a population of approximately 20 people, was hit by a 10-foot tsunami wave. [3] Another village, Baniata, reported that sixteen homes were destroyed and thirty-two were damaged by the earthquake and tsunami. [5] Due to early evacuations, there were no fatalities, but two people sustained minor injuries. [7]

See also

Related Research Articles

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<span class="mw-page-title-main">Gizo, Solomon Islands</span> Town in Western Province, Solomon Islands

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<span class="mw-page-title-main">2007 Bengkulu earthquakes</span> Earthquakes affecting Indonesia

The September 2007 Sumatra earthquakes were a series of megathrust earthquakes that struck the Sunda Trench off the coast of Sumatra, Indonesia, with three of magnitude 7 or greater. A series of tsunami bulletins was issued for the area. The most powerful of the series had a magnitude of 8.4, which makes it in the top 20 of the largest earthquakes ever recorded on a seismograph.

The 2009 Swan Islands earthquake occurred on May 28 at 02:24:45 AM local time with a moment magnitude of 7.3 and a maximum Mercalli intensity of VII. The epicenter was located in the Caribbean Sea, 64 kilometres (40 mi) northeast of the island of Roatán, 19 miles northeast of Port Royal, Isla de Bahias, 15 miles northwest of Isla Barbaretta, and 130 kilometres (81 mi) north-northeast of La Ceiba. Three aftershocks followed the earthquake within magnitude 4 range.

The 1995 Antofagasta earthquake occurred on July 30 at 05:11 UTC with a moment magnitude of 8.0 and a maximum Mercalli intensity of VII. The Antofagasta Region in Chile was affected by a moderate tsunami, with three people killed, 58 or 59 injured, and around 600 homeless. Total damage from the earthquake and tsunami amounted to $1.791 million.

The 2000 New Ireland earthquakes occurred off the coast of New Ireland Province, Papua New Guinea on November 16 and 17.

<span class="mw-page-title-main">1833 Sumatra earthquake</span> Seismic event

The 1833 Sumatra earthquake occurred on November 25 at about 22:00 local time, with an estimated magnitude in the range of 8.8–9.2 Mw . It caused a large tsunami that flooded the southwestern coast of the island. There are no reliable records of the loss of life, with the casualties being described only as 'numerous'. The magnitude of this event has been estimated using records of uplift taken from coral microatolls.

The 1912 Mürefte earthquake occurred at 03:29 local time on 9 August. It had an estimated magnitude of 7.4 Mw and a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale, causing from 216 to 3,000 casualties.

The 1996 Chimbote earthquake occurred on February 21 at 07:51 local time about 130 km off the coast of northern Peru, near the Peru–Chile Trench. The earthquake had a moment magnitude of 7.5 and occurred at 25.0 km (15.5 mi) depth.

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<span class="mw-page-title-main">Tsunami earthquake</span> Type of earthquake which triggers a tsunami of far-larger magnitude

In seismology, a tsunami earthquake is an earthquake which triggers a tsunami of significantly greater magnitude, as measured by shorter-period seismic waves. The term was introduced by Japanese seismologist Hiroo Kanamori in 1972. Such events are a result of relatively slow rupture velocities. They are particularly dangerous as a large tsunami may arrive at a coastline with little or no warning.

<span class="mw-page-title-main">1943 Alahan Panjang earthquakes</span> Earthquakes in Indonesia

The 1943 Alahan Panjang earthquakes occurred on June 8 and June 9 UTC in Sumatra, then under Japanese occupation. This was an earthquake doublet.

The 1907 Sumatra earthquake occurred on January 4 at 05:19:12 UTC. The re-estimated moment magnitude (Mw) is 8.2 to 8.4, with an epicentre close to Simeulue, off Sumatra. An earlier study re-estimated a surface-wave magnitude (Ms) of 7.5 to 8.0. It triggered a widespread and damaging Indian Ocean wide tsunami that caused at least 2,188 deaths on Sumatra. The low observed intensity compared to the size of the tsunami has led to its interpretation as a tsunami earthquake. Higher levels of shaking observed on Nias are attributed to a large aftershock, less than an hour later. The tsunami gave rise to the S'mong legend, which is credited with saving many lives during the 2004 earthquake.

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.

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The 1843 Nias earthquake off the northern coast of Sumatra, Indonesia caused severe damage when it triggered a tsunami along the coastline. The earthquake with a moment magnitude (Mw ) of 7.8 lasted nine minutes, collapsing many homes in Sumatra and Nias. It was assigned a maximum modified Mercalli intensity of XI (Extreme).

The 1968 Aegean Sea earthquake was a Mw 7.0 earthquake that occurred in the early morning hours of February 20, 1968 local time about 57.1 km (35.5 mi) away from Myrina, Greece. This earthquake occurred between mainland Greece and Turkey, meaning both countries were impacted. 20 people died, and 39 people were injured to various degrees. It was the deadliest Greek earthquake since the 1956 Amorgos earthquake.

References

  1. ISC (19 January 2015), ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009), Version 2.0, International Seismological Centre
  2. "M 7.1 – 94 km SE of Gizo, Solomon Islands". United States Geological Survey. 3 January 2010. Retrieved 26 June 2021.
  3. 1 2 3 4 "1,000 homeless on Solomon Islands after tsunami". New York Daily News . Associated Press. January 5, 2010.
  4. "Magnitude 7.1 – SOLOMON ISLANDS". United States Geological Survey. Archived from the original on 2010-01-07.
  5. 1 2 Pacnews (January 6, 2010). "Further damage uncovered in Solomon Islands". Pacific Island News Association.
  6. 1 2 Andrew V. Newman, Lujia Feng, Hermann M. Fritz, Zachery M. Lifton, Nikos Kalligeris, Yong Wei (2011). "The energetic 2010 MW 7.1 Solomon Islands tsunami earthquake". Geophysical Journal International. 186 (2): 775–781. Bibcode:2011GeoJI.186..775N. doi: 10.1111/j.1365-246X.2011.05057.x . Retrieved 15 May 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. Newman, A. V.; Feng, L.; Fritz, H. M.; Lifton, Z. M.; Kalligeris, N.; Wei, Y. (2011). "The energetic 2010 MW 7.1 Solomon Islands tsunami earthquake". Geophysical Journal International. 186 (2): 775–781. Bibcode:2011GeoJI.186..775N. doi: 10.1111/j.1365-246X.2011.05057.x .

Further reading