1996 Chimbote earthquake

Earthquake and tsunami affecting Peru 1996 Nazca earthquake 1996 Chimbote earthquake 1996-02-21 12:51:01 usp0007dmb 949313 Peru 1996 02 21 y 07:51 7.5 w y 25.0 km mi 0 on -9.593 -79.587 region:CL_type:event inline,title Thrust 4 Yes 12 The 1996 Chimbote earthquake occurred on February 21 at 07:51 local time 12:51 UTC about 130 km off the coast of northern Peru, near the Peru–Chile Trench. The earthquake had a moment magnitude (w y) of 7.5 and occurred at 25.0 km depth. Geology The mechanism inferred from data is a low-angle thrust of the Nazca plate, which is subducting beneath the South American plate.Geologic Setting, Field Survey and Modeling of the Chimbote, Northern Peru, Tsunami of 21 February 1996 J. Bourgeois C. Petroff H. Yeh V. Titov C. E. Synolakis B. Benson J. Kuroiwa J. Lander E. Norabuena 1999 Pure and Applied Geophysics 154 3–4 513–540 10.1007/s000240050242 1999PApGe.154..513B 129854200 This earthquake occurred in an area where the Peru–Chile subduction zone is relatively quiet.http://www.agu.org/journals/ABS/1998/98GL01987.shtml AGU – American Geophysical Union AGU Tsunami This earthquake was special in that it generated a disproportionally large tsunami. Earthquakes with slow rupture velocities are the most efficient tsunami generators, and the rupture velocity of this earthquake was classified as moderately slow (Newman and Okal, 1996). The tsunami affected the Peruvian coastal area from Pacasmayo, La Libertad to Callao. The straight-line distance between the two areas is about 590 km.http://www.ioc-tsunami.org/pdf/1996.pdf Archived copy 2010-08-21 https://web.archive.org/web/20110726182851/http://www.ioc-tsunami.org/pdf/1996.pdf 2011-07-26 dead http://www.ess.washington.edu/tsunami/Peru/peru.html Tsunami! – Tsunamis – past and present ess.washington.edu 2010-08-21 2022-02-15 https://web.archive.org/web/20220215184243/https://www.ess.washington.edu/tsunami/Peru/peru.html dead The greatest runup value of the tsunami was 5.14 m, recorded at the port of Chimbote, located on the north side of Chimbote Bay. Twelve people were killed by the tsunami, all in remote areas, likely due to lack of information. In more populated areas, such as Chimbote, people were aware of the approaching tsunami and were able to evacuate the coast in time.http://www.usc.edu/dept/tsunamis/peru/ptsu_1996.html A description of the 1996 tsunami that stuck Chimbote and other costal cities in the north-central region of Peru 2010-08-21 https://web.archive.org/web/20100118100308/http://www.usc.edu/dept/tsunamis/peru/ptsu_1996.html 2010-01-18 dead A 60 cm tsunami was recorded in Easter Island and 25 cm in Hilo. Aftershocks The aftershock pattern of this earthquake ranged from 120 to 180 km off the coast and seemed to parallel the Peru–Chile Trench and the Peruvian coastline.Petroff Catherine Bourgeois Jody Yeh Harry The February 21, 1996 Chimbote Tsunamis in Peru, EERI Special Earthquake Report – May 1996 https://www.eeri.org/lfe/pdf/peru_chimbote_eeri_preliminary_report.pdf Earthquake Engineering Research Institute University of Washington Of the mechanisms of two of the larger aftershocks, one was a shallow thrust, and the other one was normal faulting.2000GeoJI.142..684P Page 692 Geophysical Journal International 142 3 684 2000GeoJI.142..684P Polet J. Kanamori H. 2000 10.1046/j.1365-246X.2000.00205.x free See also 2001 southern Peru earthquake List of earthquakes in 1996 List of earthquakes in Peru References ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009) http://www.isc.ac.uk/iscgem/index.php ISC 27 June 2022 International Seismological Centre Version 9.1 M 7.5 – 123 km WSW of Puerto Santa, Peru 1996 usp0007dmb cs2 External links 949313 Chimbote Earthquake, 1996 Category:Earthquakes in Peru Chimbote Category:Tsunami earthquakes Category:Tsunamis in Peru Category:1996 disasters in Peru