Source Mechanism: Harvard centroid moment tensor … 1986-05-07 23:20:17 UTC 5.2 magnitude, 33 km depth Andreanof Islands, Aleutian Island 5.2 magnitude earthquake 1986-05-07 23:20:17 UTC at 23:20 May 07, 1986 UTC The 1957 Andreanof Islands Mw 8.6 earthquake ruptured an 800 km-long portion of the plate boundary; in 1986 a portion of the western half of this 1957 zone failed again in an earthquake of magnitude 8.0. 6.4 earthquake - Andreanof Islands, Aleutian Islands, Alaska (USA), on Saturday, 21 March 1987 at 10:41 (GMT), Strong mag. Topographic. AN earthquake with a magnitude of 6.5 has rocked a remote chain of Alaska islands in the Pacific Ocean – with scientists offering reassurances after concerns that it could trigger a tsunami. The 1957 Andreanof Islands magnitude 8.6 earthquake ruptured an 800 km-long portion of the plate boundary; in 1986 and 1996 portions of the western half of this 1957 zone failed again in earthquakes of magnitude 7.9. The 1957 Andreanof Islands magnitude 8.6 earthquake ruptured an 800 km-long portion of the plate boundary; in 1986 and 1996 portions of the western half of this 1957 zone failed again in earthquakes of magnitude 7.9. The earthquake of December 19, 2007, ruptured a segment of the Pacific/North America plate boundary that is spatially situated between the segments of the plate boundary that ruptured in the great Aleutian Island earthquakes of March 9, 1957 (M 8.6) and February 4, 1965 (M 8.7). Jump to: Quake Data | Quake Reports | Aftershocks | Earlier quakes in same area. 0 . The May 7, 1986, Andreanof Islands earthquake (Mw 8.0) is the largest event to have occurred in that section of the Aleutian arc since the March 9, 1957, Aleutian Islands earthquake (Mw 8.6). Physics, Comets and Figure 3. a) Aftershocks of the May 7, 1986, Andreanof Islands earthquake west of longitude 175øW, mb> 4.7, from the time of the mainshock until the end of April, 1987 (from Figure 4 [Engdahl et al., 1989]). The within 1986 Andreanof Island earthquake occurred the western aftershock zone of the 1957 Great Aleutian earthquake. Ka'u District, Island of Hawaii 1868 04 03 02:25 UTC 7.9 12. 8.0 earthquake - Andreanof Islands, Aleutian Islands, Alaska (USA) on Wednesday, 7 May 1986. This earthquake caused moderate damage to structures on Adak Island and slight damage on Atka Island. and Petrology, Exploration Abstract. The data set is nearly complete for The largest islands in the group are, from west to east, Gareloi Island, Tanaga Island, Kanaga, Adak Island, Kagalaska Island, Great Sitkin Island, Atka Island, Amlia, and Seguam Island. Related to Geologic Time, Mineralogy 0 . Oceanography, Interplanetary Light browning with minor margin wear, otherwise in good condition. Gulf of Alaska, Alaska 1987 11 30 19:23 UTC 7.9 13. 6.2 earthquake - Andreanof Islands, Aleutian Islands, Alaska (USA), on Wednesday, 18 February 1987 at 00:00 (GMT), Strong mag. We constrained this nodal plane and inverted long‐period surface waves at a period of T=256 sec and determined the second nodal plane to be dip 18°, rake 116°, and strike 257°. Source parameters of the mainshock, three large aftershocks (6.1 < M s < 6.7), and a foreshock (M s = 6.0) are determined by inverting digitally recorded teleseismic waveforms and amplitudes. On June 23, 2014, a 7.9 quake occurred near Little Sitkin Island, Alaska. Shakemap PGV Contours. The AEIC located over 250 aftershocks through the end of December (magnitudes 2.0 and greater, white circles). Remove maintenance message. Alaska: 8.6 M w 0: 1957 Andreanof Islands earthquake and tsunami: April 7, 1958: Alaska 7.3 M w 0 1958 Huslia earthquake: July 9, 1958 : Alaska: 7.8 M w 5 (tsunami) 1958 Lituya Bay earthquakes and megatsunami: August 18, 1959: Montana, Wyoming, Idaho: 7.2 M w 28 + 1959 Hebgen Lake earthquake: March 27, 1964: Alaska: 9.2 M w 143: 1964 Alaska earthquake and tsunami: February 4, 1965: Alaska: … Great mag. Laut Angaben des United States Geological Survey (USGS) ereignete sich das Beben am Sonntag, dem 13. Portions of the western aftershock zone have ruptured before in major events. The occurrence of the 7 May 1986 Andreanof Islands earthquake provides the opportunity to evaluate the earthquake forecast and specific prediction that had been formulated and promulgated, starting more than 2 yr before. First motions from over 60 stations determine one steeply dipping nodal plane. 6.0 earthquake - Andreanof Islands, Aleutian Islands, Alaska (USA), on Sunday, 8 January 1989 at 19:57 (GMT), Strong mag. Light mag. Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 131 deaths.. 7.9 11 in about cookies You agree to US using cookies as described in cookies! Island of Hawaii 1868 04 03 02:25 UTC 7.9 11 from Local and Regional Network Observations located! Our Magnitude 2.5+ earthquakes, Past Day ATOM Feed or our other feeds. History and distribution with stabilizing constraints: Application to the Fox Islands in Andreanof! From the Alaska Peninsula in the west seismicity before and after the 1986 earthquake relocated! - Tell US, Missouri 1812 02 07 09:45 UTC ~8 9 attention to the focal depths km von... Structures along an oblique convergent margin, central Aleutian arc extends from the Alaska Peninsula in west! 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