All Rights Reserved. This item is part of JSTOR collection [1] This was not an aftershock, but a normal fault event within the outer rise of the subducting plate, triggered by the earlier event. JSTOR®, the JSTOR logo, JPASS®, Artstor®, Reveal Digital™ and ITHAKA® are registered trademarks of ITHAKA. The Aleutian Trench is an oceanic trench along a convergent plate boundary which runs along the southern coastline of Alaska and the Aleutian islands. It had a magnitude of 8.7 and triggered a tsunami of over 10 m on Shemya Island, but caused very little damage. Over 730 aftershocks shocked the area afterwards, one just eleven minutes after the mainshock. The focal mechanism corresponded to reverse faulting. Black, Published By: American Association for the Advancement of Science, New Series, Vol. The term was introduced by Hiroo Kanamori in 1972. Together the earthquake and tsunami caused 3,358 casualties. Science Careers, found in print and online, provides relevant career articles published weekly, thousands of job postings updated several times a week, and other career related services. The earthquake was associated with a 600 km long rupture along the plate boundary, based on the distribution of aftershocks. The main islands that were impacted were: Adak Island, Sheyma Island, and Attu Island. The great Rat Islands underthrusting earthquake (M w = 8.7), of February 4, 1965, represents subduction of the Pacific plate beneath the North American plate along a 600-km segment of the western end of the Aleutian Islands. The 1957 Andreanof Islands earthquake took place on March 9 with a moment magnitude of 8.6 and a maximum Mercalli intensity of VIII (Severe). This megathrust earthquake also triggered a devastating tsunami that caused damage along the Gulf of Alaska, the West Coast of the United States, and in Hawaii. The magnitude of the earthquake was put at Ms 6.75 by using the conventional magnitude measurement within a shorter duration of ~20 s. However, there is a large discrepancy between the magnitudes in Ms and Mw in this earthquake. The 1944 Tōnankai earthquake occurred at 13:35 local time on 7 December. An extended series of websites includes comprehensive career development resources. Inversion using the two different datasets shows a high correlation between the areas of high moment release and areas of high slip. The 1907 Sumatra earthquake occurred on January 4 at 05:19:12 UTC. 1). The Okhotsk Plate is a minor tectonic plate covering the Sea of Okhotsk, the Kamchatka Peninsula, Sakhalin Island and Tōhoku and Hokkaidō in Japan. Stolzenburg, William (2012). A basin wide tsunami followed, with effects felt in Alaska and Hawaii. Public engagement activities are creating an open dialogue with scientists on societal issues such as global climate change. They are particularly dangerous as a large tsunami may arrive at a coastline with little or no warning. This megathrust earthquake also triggered a devastating tsunami that caused damage along the Gulf of Alaska, the West Coast of the United States, and in Hawaii. The westernmost Aleutians megathrust earthquake followed a year later on February 4, 1965. Date & time: 18 Feb 1965 11:13:40 UTC###AGESTRINGCOPY### Magnitude: 5.8 Depth: 40.4 km Epicenter latitude / longitude: 51.415°N … We use the 1965 Rat Islands earthquake to compare seismic wave inversion results for moment-release distributions to tsunami wave inversion results for slip distribution. The epicenter was at a depth of 35 km (22 miles). This event may have been triggerred by the large displacement near the mainshock epicenter. This earthquake is regarded as a foreshock of the 2004 Indian Ocean earthquake, which had an epicenter about 60 km to the northwest. Request Permissions. It is probably the earliest earthquake for which rupture parameters have been estimated instrumentally. The 1965 Rat Islands earthquake occurred at 05:01 UTC, on 4 February (19:01, 3 February local time [1] ). Feb 4, 1965: Magnitude 8.7 quake in the Rat Islands, Alaska caused a 10.7-m-high tsunami on Shemya Island and no loss of life. Some dam-age to runways and buildings was re- ported. Quake Data | User Reports | Aftershocks | Earlier quakes in same area. Science, founded by Thomas A. Edison in 1880 and published by AAAS, today ranks as the world's largest circulation general science journal. The online Science Multimedia Center features Science Podcasts, images and slide shows, videos, seminars, and other interactive features. The 2000 New Ireland earthquakes occurred off the coast of New Ireland Province, Papua New Guinea on November 16 and 17. The northern end is thought to connect to the Sagaing Fault and the southern end to the Great Sumatran fault. [3], The earthquake was associated with a 600 km long rupture along the plate boundary, based on the distribution of aftershocks. It caused a damaging tsunami that was particularly severe near Padang, where a 150–200 ton English ship was driven 1 km inland up the Arau River. E … Aftershocks of the 4 February 1965 Rat Island Earthquake Science. A tsunami is a sea wave of local or distant origin that results from large-scale seafloor displacements associated with large earthquakes, major submarine slides, or exploding volcanic islands. It caused no severe damage or injuries due to its location relative to the sparsely-populated Alaska Peninsula, but managed to spawn a negligible tsunami that prompted evacuation of coastal residences. The 1906 Aleutian Islands earthquake occurred at 00:11 UTC on August 17. A light earthquake with magnitude 4.2 (ml/mb) was detected on Monday, Rat Islands, Aleutian Islands, Alaska (0 miles). A tsunami earthquake triggers a tsunami of a magnitude that is very much larger than the magnitude of the earthquake as measured by shorter-period seismic waves. One of the deadliest natural disasters in recent history, the 2004 … Body wave inversion techniques are used to determine the spatial and temporal heterogeneities associated with the Rat Islands earthquake. The online edition includes not only the full text of current issues, but also Science archives dating back to Edison's first edition in 1880.

Five Pictures Plate boundary Extra Info Subduction of the Pacific Plate beneath the North American Plate ---- Alaska-Aleutian Mega thrust On Adak Island, cracks occurred in prefabricated wood buildings; on Shemya Island, cracks were observed in an asphalt runway. Global efforts include programs and partnerships worldwide, from Asia to Europe to Africa, and extensive work in human rights using geospatial technology to corroborate abuses. The sharp boundary conditions of the epicenter locations suggest block faulting about the Rat Islands as a subsystem of the Aleutian Islands arc structure. Flooding from the tsunami caused $10,000 worth of damage on Amchitka Island. The 1881 Nicobar Islands earthquake occurred at about 07:49 local time on 31 December, with an epicentre beneath Car Nicobar. The rupture area for the 2005 Nias–Simeulue earthquake is similar to that estimated for the 1861 event.

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