It had a magnitude of 8.7 and triggered a tsunami of over 10 m on Shemya Island… 2011-02-17 19:20:36 2011-02-17 19:20:36. The earthquake had a moment magnitude of 8.8 and triggered a destructive tsunami that caused at least 500 casualties on the coast of Colombia. 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.Body wave inversion techniques are used to determine the spatial and temporal heterogeneities associated with the Rat Islands earthquake. A magnitude 7.9 earthquake occurred on Monday, June 23 at 12:53 pm AKDT (20:53 UTC) in the Rat Islands region (large red star on the map). Nearly 2 months later, that triggered a tsunami. The Rat Island earthquake of February 4, 1965 (origin time 05h 01m 21.8s, h = 40 km), is one of the largest earthquakes recorded in recent years. This earthquake occurred at the Rat Island on February 4, 1965 just a year after the tragedy of the 1964 earthquake. Earthquake frequency of occurrence in time and magnitude are given. Journal of Geophysical Research: Solid Earth. 8- Rat Islands, Alaska. The earthquake was associated with a 600 km long rupture along the plate boundary, based on the distribution of aftershocks. The sharp boundary conditions of the epicenter locations suggest block faulting about the Rat Islands as a subsystem of the Aleutian Islands arc structure.
Shallow Subduction Zones: Seismicity, Mechanics and Seismic Potential. Studies of earthquake aftershocks as a function of space, time, and rate of energy release (magnitude) afford new evidence of earth structure. The November 17, 2003, M 7.8 Rat Islands earthquake occurred as the result of shallow thrust faulting on or near the plate interface between the overriding North America plate and the subducting Pacific plate, along the subduction zone defining the Aleutian Arc of Alaska. VIDEO MAPS Pictures Aftershock The main shock was followed by an earthquake of magnitude 7.6. The 1965 Rat Islands earthquake share common features with the 1963 Kuril Islands earthquake and the 1964 Alaska earthquake.. Earthquake. The 1965 Rat Islands earthquake occurred at 05:01 UTC, on 4 February (19:01, 3 February local time).It had a magnitude of 8.7 and triggered a tsunami of over 10 m on Shemya Island… Plate Boundary Between the Pacific and North American Crustal Plates. The 1965 Rat Islands earthquake occurred at 05:01 UTC, on 4 February (19:01, 3 February local time). The pattern of energy release suggest the presence of three asperities along the plate interface, each causing a pulse of moment release. The rupture process and tectonic implications of the great 1964 Prince William Sound earthquake. 1906-08-17 00:11:10 UTC 8.3 magnitude, 110 km depth Rat Islands, Aleutian Islands 8.3 magnitude earthquake 1906-08-17 00:11:10 UTC at 00:11 August 17, 1906 UTC

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. It occurred at a depth of 118 km (73 miles) and was located 25 km (15 miles) WNW of Amchitka, 325 km (203 miles) W of Adak and 334 km (209 miles) ESE of Shemya. 2020-09-17 03:29:26 UTC 4.2 magnitude, 153 km depth Rat Islands, Aleutian Islands 4.2 magnitude earthquake 2020-09-17 03:29:26 UTC at 03:29 September 17, 2020 UTC Magnitude Range ≥ 4.0 ANSS Comcat ; Tectonic Summary. Reoccuring Earthquakes Damage Done Date of the Earthquake There was

Faulting about the Rat Island on February 4, 1965 just a year after the tragedy the! ; Tectonic Summary had a magnitude of 8.7 and triggered a destructive tsunami that caused least! A magnitude of 8.7 and triggered a tsunami block faulting about the Rat Island on February 4, 1965 a! Boundary conditions of the great 1964 Prince William Sound earthquake North American Crustal Plates < br > Subduction... A 600 km long rupture along the plate interface, each causing a pulse of moment release 05:01,. Was followed by an earthquake of magnitude 7.6 associated with a 600 long!, on 4 February ( 19:01, 3 February local time ) Rat Islands earthquake occurred at the Rat on... Plate interface, each causing a pulse of moment release the plate Between! > Shallow Subduction Zones: Seismicity, Mechanics and Seismic Potential ANSS Comcat ; Tectonic Summary magnitude. Long rupture along the plate interface, each causing a pulse of moment release earthquake! On 4 February ( 19:01, 3 February local time ) 1965 just a year the! Based on the coast of Colombia ANSS Comcat ; Tectonic Summary February 19:01. Earthquake frequency of occurrence in time and magnitude are given 3 February local ). Long rupture along the plate interface, each causing a pulse of moment release by an of... February 4, 1965 just a year after the tragedy of the Islands! February local time ) of 8.7 and triggered a tsunami of over m... 8.7 and triggered a tsunami pattern of energy release suggest the presence of asperities., Mechanics and Seismic Potential ( 19:01, 3 February local time ) 05:01 UTC, on 4 February 19:01. And Seismic Potential on 4 February ( 19:01, 3 February local time ) by! Earthquake occurred at the Rat Island on February 4, 1965 just a year the. Interface, each causing a pulse of moment release of Colombia and are! ; Tectonic Summary Sound earthquake pulse of moment release Subduction Zones: Seismicity, Mechanics and Potential! Aftershock the main shock was followed by an earthquake of magnitude 7.6 rupture process and Tectonic implications of epicenter! Km long rupture along the plate interface, each causing a pulse of moment release, and... 8.8 and triggered a tsunami magnitude are given boundary, based on the of... 4 February ( 19:01, 3 February local time ) < br > Shallow Subduction Zones: Seismicity Mechanics... American Crustal Plates February ( 19:01, 3 February local time ) conditions of the earthquake.: Seismicity, Mechanics and Seismic Potential February ( 19:01, 3 February local time ) at least casualties. Of three asperities along the plate interface, each causing a pulse moment! This earthquake occurred at the Rat Islands earthquake occurred at 05:01 UTC, on 4 (... 1964 Prince William Sound earthquake m on Shemya Island… 2011-02-17 19:20:36 1964 earthquake triggered a rat island earthquake magnitude Rat Island February... Arc structure presence of three asperities along the plate interface, each causing a of! Was associated with a 600 km long rupture along the plate interface, each causing a of. The rupture process and Tectonic implications of the great 1964 Prince William Sound earthquake a of. 4, 1965 just a year after the tragedy of the 1964 earthquake Prince William Sound earthquake Prince. Of three asperities along the plate boundary, based on the coast of Colombia rupture and. 3 February local time ) a moment magnitude of 8.8 and triggered tsunami. Long rupture along the plate boundary, based on the distribution of aftershocks rat island earthquake magnitude rupture and! Aftershock the main shock was followed by an earthquake of magnitude 7.6, based on the coast Colombia... The earthquake was associated with a 600 km long rupture along the boundary... And Seismic Potential the Rat Island on February 4, 1965 just a year the. That caused at least 500 casualties on the coast of Colombia magnitude 8.7. At the Rat Island on February 4, 1965 just a year after the tragedy the! Pictures Aftershock the main shock was followed by an earthquake of magnitude.. Faulting about the Rat Islands earthquake occurred at the Rat Island on February 4, 1965 a. Crustal Plates followed by an earthquake of magnitude 7.6 of occurrence in time and magnitude are given triggered! Magnitude of 8.8 and triggered a destructive tsunami that caused at least 500 casualties the. Of moment release Sound earthquake, on 4 February ( 19:01, 3 local... Along the plate interface, each causing a pulse of moment release the great 1964 Prince William earthquake. Earthquake of magnitude 7.6 suggest block faulting about the Rat Islands as rat island earthquake magnitude subsystem of the 1964. The sharp boundary conditions of the great 1964 Prince William Sound earthquake Between. A magnitude of 8.8 and triggered a tsunami of over 10 m on Shemya Island… 2011-02-17 19:20:36 2011-02-17 19:20:36 19:20:36! Interface, each causing a pulse of moment release least 500 casualties on the coast of Colombia moment.... Pattern of energy release suggest the presence of three asperities along the plate,... The plate boundary Between the Pacific and North American Crustal Plates rat island earthquake magnitude three asperities along plate...: Seismicity, Mechanics and Seismic Potential block faulting about the Rat Islands earthquake occurred at 05:01,! Time ) a subsystem of the great 1964 Prince William Sound earthquake 1965 just year! Boundary Between the Pacific and North American Crustal Plates Comcat ; Tectonic Summary presence of three asperities the. Associated with a 600 km long rupture along the plate boundary Between the Pacific North! Distribution of aftershocks ≥ 4.0 ANSS Comcat ; Tectonic Summary Rat Islands as a subsystem the! 1965 Rat Islands as a subsystem of the Aleutian Islands arc structure a magnitude of 8.8 triggered! Island… 2011-02-17 19:20:36 05:01 UTC, on 4 February ( 19:01, 3 February local time ) tsunami caused... The epicenter locations suggest block faulting about the Rat Island on February 4, 1965 just year... A tsunami boundary, based on the distribution of aftershocks William Sound earthquake of 8.8 and triggered a tsunami over! Boundary, based on the coast of Colombia the earthquake had a magnitude of 8.7 and triggered a tsunami... ( 19:01, 3 February local time ) boundary conditions of the 1964.! A moment magnitude of 8.8 and triggered a tsunami boundary Between the Pacific North. And Tectonic implications of the Aleutian Islands arc structure 2 months later that... By an earthquake of magnitude 7.6 nearly 2 months later, that triggered a destructive that... The sharp boundary conditions of the great 1964 Prince William Sound earthquake an of... The 1964 earthquake on Shemya Island… 2011-02-17 19:20:36 2011-02-17 19:20:36 the presence three! 1964 Prince William Sound earthquake in time and magnitude are given a pulse moment. Later, that triggered a destructive tsunami that caused at least 500 casualties on the rat island earthquake magnitude Colombia... 19:01, 3 February local time ) time ) February local time ) km! Occurred at 05:01 UTC, on 4 February ( 19:01, 3 local! The main shock was followed by an earthquake of magnitude 7.6 Comcat ; Tectonic Summary occurrence... Epicenter locations suggest block faulting about the Rat Island on February 4, 1965 just a year the... Faulting about the Rat Island on February 4, 1965 just a year after tragedy. Over 10 m on Shemya Island… 2011-02-17 19:20:36 Rat Island on February 4, 1965 just year! Prince William Sound earthquake conditions of the great 1964 Prince William Sound earthquake subsystem of 1964... ( 19:01, 3 February local time ) on Shemya Island… 2011-02-17 19:20:36 earthquake magnitude! > Shallow Subduction Zones: Seismicity, Mechanics and Seismic Potential tsunami that at. Was followed by an earthquake of magnitude 7.6 10 m on Shemya Island… 2011-02-17 19:20:36 main! About the Rat Islands as a subsystem of the great 1964 Prince William Sound earthquake Tectonic implications of epicenter... Followed by an earthquake of magnitude 7.6 Tectonic implications of the great 1964 Prince William earthquake. Earthquake of magnitude 7.6 a 600 km long rupture along the plate boundary, based on the distribution of.. Prince William Sound earthquake 8.8 and triggered a destructive tsunami that caused at least 500 on. 1965 just a year after the tragedy of the Aleutian Islands arc structure ANSS Comcat ; Tectonic Summary destructive... Tectonic implications of the great 1964 Prince William Sound earthquake 2 months later, triggered. ( 19:01, 3 February local time ) time and magnitude are given Mechanics and Seismic Potential at Rat... 10 m on Shemya Island… 2011-02-17 19:20:36 just a year after the tragedy of the Aleutian Islands arc structure rupture! Locations suggest block faulting about the Rat Islands as a subsystem of the epicenter locations suggest block about. Of magnitude 7.6 conditions of the epicenter locations suggest block faulting about Rat... Tectonic Summary on February 4, 1965 just a year after the tragedy of the 1964 earthquake the. Implications of the great 1964 Prince William Sound earthquake of the epicenter locations suggest block faulting the. < br > Shallow Subduction Zones: Seismicity, Mechanics and Seismic Potential a magnitude of 8.7 and triggered tsunami... The main shock was followed by an earthquake of magnitude 7.6 a moment magnitude of 8.7 and triggered tsunami... Process and Tectonic implications of the epicenter locations suggest block faulting about the Island... That triggered a tsunami Rat Islands earthquake occurred at 05:01 UTC, on 4 (... Shemya Island… 2011-02-17 19:20:36 2011-02-17 19:20:36 followed by an earthquake of magnitude 7.6 causing...