2012 indian ocean earthquakes

Atmos. Res. Ecology & Society, 18 (4). and V.S. Internet Explorer). Han Yue and colleagues show that the 11 April event involved a complex four-fault rupture lasting several minutes, followed two hours later by a magnitude-8.2 aftershock. & Castro, R. R. Remote triggered seismicity caused by the 2011 M9.0 Tohoku-Oki, Japan earthquake. We examine the background seismicity and tectonics to better evaluate these models. Seismol. 1 … http://www.seismology.harvard.edu/research_sumatra2012.html (2012), Wang, D., Mori, J. Res. Epicentres and magnitudes of seismic events were obtained from the NEIC catalogue. http://www.eqh.dpri.kyoto-u.ac.jp/src/etc/sumatra.htm (2012), Meng, L. Ampuero, J.-P., Duputel, Z., Luo, Y. In Maulida, I. Meilano, E. Gunawan and J. Efendi, Analysis of 2012 M8.6 Indian Ocean earthquake coseismic slip model based on GPS data, 1730, 040006 (2016) Google Scholar 7. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Soc. Science 337, 724–726 (2012), Incorporated Research Institutions for Seismology. The 2012 April 11 Indian Ocean M8.6 earthquake and the … These great ruptures on a lattice of strike-slip faults that extends through the crust and into the upper mantle represent large lithospheric deformation that may eventually create a localized boundary between the Indian and Australian plates. The 2012 east Indian Ocean earthquake that had a moment magnitude of 8.6 is the largest strike-slip event ever recorded. 17 Deciphering the Mystery of the Great Indian Ocean Earthquakes Kelly Wiseman and Roland Bu¨rgmann 17.1 Introduction On April 11, 2012, there were two magnitude 8+ earth-quakes off the west coast of northern Sumatra, Indone The April 11, 2012, M w 8.6 Indian Ocean earthquake (08:38:37 UTC)—the largest instrumentally recorded strike-slip earthquake—ruptured a complex sequence of 3–4 orthogonal fault segments (McGuire & Beroza 2012; Meng ). A., Ammon, C. J., Farrell, J. J. Geophys. Get time limited or full article access on ReadCube. Google Scholar, Pankow, K. L., Arabasz, W. J., Pechman, J. C. & Nava, S. J. S152–S173 (2007), Gardner, J. K. & Knopoff, L. Is the sequence of earthquakes in southern California, with aftershocks removed, Poissonian? Seismic waveform data presented in Supplementary Information were obtained from the Incorporated Research Institutions for Seismology (IRIS) Data Management Center. https://doi.org/10.1016/j.tecto.2014.01.024. Lee, W. H. K. ) 665–690 (Academic, 2002), Shelly, D. R., Peng, Z., Hill, D. P. & Aiken, C. Triggered creep as a possible mechanism for delayed dynamic triggering of tremor and earthquakes. J. Int. In the meantime, to ensure continued support, we are displaying the site without styles 122, 537–550 (1995), Dziewonski, A. M., Chou, T.-A. The earthquakes consequently put people in the region on high alert and may have triggered preparedness actions among the works under contract at the US Geological Survey. J. Geophys. Media in category "2012 Indian Ocean earthquake". & Johnson, P. Dynamic triggering of earthquakes. Res. The 11 April 2012 East Indian Ocean earthquake is unique because of its largest ever recorded aftershock. Here we show that the rate of occurrence of remote M ≥ 5.5 earthquakes (>1,500 kilometres from the epicentre) increased nearly fivefold for six days after the 2012 event, and extended in magnitude to M ≤ 7. Remote triggering of the Mw 6.9 Hokkaido Earthquake as a Result of the Mw 6.6 Indonesian Earthquake on September 11, 2008. Nature 490, 250–253 (2012) CAS ADS Article Google Scholar 6 Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily. The unprecedented delayed triggering power of this earthquake may arise from its strike-slip source geometry, or because it struck at a time of an unusually low global earthquake rate and increased the number of nucleation sites that were very close to failure. Schubert, G. ) 258–288 (Treatise on Geophysics 4, Elsevier, 2007), Dahlen, F. A. 39, L10302 (2012), Parsons, T. & Velasco, A. We thank T. Hanks, R. Harris, A. Michael, T. Parsons and P. Stark for their comments on a preliminary draft. Geophys. Here we show that the rate of occurrence of remote M ≥5.5 earthquakes (>1,500 kilometres from the epicentre) increased nearly fivefold for six days after the 2012 event, and extended in magnitude to M ≥7. To obtain The Indian Ocean is an ocean located on Earth. Dynamic triggering: stress modeling and a case study. Article  & Woodhouse, J. H. Determination of earthquake source parameters from waveform data for studies of global and regional seismicity. Soc. On the afternoon of April 11, 2012, one of the most powerful earthquakes ever recorded — and now revealed to be among the weirdest — struck in the Indian Ocean, off the coast of Sumatra… Geophys. Lett. F.F.P., R.S.S. & Ohmi, S. Rupture Process of the April 11, 2012 Sumatra (Mw 8.6) Earthquake Imaged with Back-Projection of Hi-net Data. In this paper, we review the regional tectonics and past seismicity on the Indo-Australian Plate in order to understand the seismotectonic setting of the April 2012 Indian Ocean earthquakes. Copyright © 2014 Elsevier B.V. All rights reserved. At their boundary, the Indian and Australian Plates converge at 11 mm (0.4 in) per year in a NNW-SSE direction, which is accommodated by a broad zone of diffuse deformation. & Bodin, P. Triggering of earthquake aftershocks by dynamic stresses. Three groups now report the analysis of seismic data from the days and months before and after these events, as well as the events themselves. and JavaScript. (2021), Journal of Geophysical Research: Solid Earth Bull. The 11 April 2012 earthquakes (Mw 8.6 and Mw 8.2) were sourced within the Northern Wharton Basin in the northeastern part of the Indo-Australian diffuse plate boundary. F.F.P. 97 (1a). Seismol. The 2012 east Indian Ocean earthquake that had a moment magnitude of 8.6 is the largest strike-slip event ever recorded. Regional geology and tectonic history favor failure on pre-existing structures. Seismicity in the western United States remotely triggered by the M7.4 Landers, California, earthquake of June 28, 1992. This unusually active oceanic intraplate region has generated many large earthquakes in the past, most of which are believed to have occurred by strike-slip motion, triggered by the NW–SE oriented compressional stresses acting across the Indian and Australian plates. Res. & Gomberg, J. (2020). They conclude that the Australian plate, driven by slab-pull forces at the Sunda trench, is gradually detaching from the Indian plate. The 11 April 2012 earthquakes (M w 8.6 and M w 8.2) were sourced within the Northern Wharton Basin in the northeastern part of the Indo-Australian diffuse plate boundary. Bull. Google Scholar, Kilb, D., Gomberg, J. The 11 April 2012 east Indian Ocean earthquake triggered large aftershocks worldwide. Nature Geosci. Sumatra Earthquake (2004)– 9.1. These global aftershocks were located along the four lobes of Love-wave radiation; all struck where the dynamic shear strain is calculated to exceed 10−7 for at least 100 seconds during dynamic-wave passage. Get the most important science stories of the day, free in your inbox. (PDF 1395 kb), Pollitz, F., Stein, R., Sevilgen, V. et al. Interviews were carried out during the period of numerous aftershocks, which put The 2012 Indian Ocean earthquakes were followed by tsunami warnings and numerous other quakes. Large earthquakes trigger very small earthquakes globally during passage of the seismic waves and during the following several hours to days1,2,3,4,5,6,7,8,9,10, but so far remote aftershocks of moment magnitude M ≥ 5.5 have not been identified11, with the lone exception of an M = 6.9 quake remotely triggered by the surface waves from an M = 6.6 quake 4,800 kilometres away12. Intra-oceanic seismicity off Sumatra boosted by the Banda–Aceh megathrust. Am. Geology 32, 537–540 (2004), Article  J. Geophys. Res. Tax calculation will be finalised during checkout. pp. The region is regularly hit by earthquakes. The 11 April 2012 earthquake (Mw 8.6) in the Indian Ocean, about 100 km west off the Sumatra subduction zone, is the largest intraplate strike‐slip earthquake in the known history. The 2012 Indian Ocean Earthquake sequence, which was the largest intraplate earthquake in recorded history, yielded seismic moment of 1.2-1.3 × 10 22 N m and 0.2-0.3 × 10 22 N m for the main shock (Mw 8.6) and the after shock (Mw 8.2), respectively. 114, B00A06 (2009), Velasco, A. During the 2012 apocalypse, massive earthquakes hit between Asia and Africa, which caused major damage and volcanoes erupted in several areas across the lands, including underwater volcanoes, destroying parts of the Indian Ocean. Nature Here we show that the rate … The 11 April 2012 east Indian Ocean earthquake triggered large aftershocks worldwide. J. Geophys. By submitting a comment you agree to abide by our Terms and Community Guidelines. V.S. contributed equally to earthquake catalogue analysis. initiated the study and performed all seismic-wave analysis. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. 2012 Indian Ocean earthquakes: 2012年4月スマトラ島沖地震（スマトラとうおきじしん）は、2012年4月11日、現地時間15時38分（UTC午前8時38分）にインドネシア西部、スマトラ島北西沖のインド洋で発生したマグニチュード8.6の地震で A survey was conducted of 557 households in the areas that received tsunami warnings following the Indian Ocean earthquakes on 11 April 2012. & Tsai, V. C. Earthquake in a maze: compressional rupture branching during the 2012 Mw 8.6 Sumatra earthquake. 94, S348–S359 (2004), Article  Bull. 82, 2981–2987 (1977), Gomberg, J. Nature Geosci. 110, B04302 (2005), Velasco, A. Google Scholar, Gomberg, J., Bodin, P., Larson, K. & Dragert, H. Earthquake nucleation by transient deformations caused by the M = 7.9 Denali, Alaska, earthquake. 116, B02304 (2011), Engdahl, E. E. & Villaseñor, A. in International Handbook of Earthquake and Engineering Seismology (ed. Nature 408, 570–574 (2000), Gomberg, J., Reasenberg, P., Bodin, P. & Harris, R. Earthquake triggering by transient seismic waves following the Landers and Hector Mine, California earthquakes. The April 2012 earthquakes occurred in the Northern Wharton Basin (nWB). On 11 April 2012, two earthquakes struck the Andaman-Sumatran region of the Indian Ocean. https://doi.org/10.1038/nature11504, Seismological Research Letters Nature http://dx.doi.org/10.1038/nature11520 (this issue), Kanamori, H. The energy release in great earthquakes. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate. 2012 8.6 10 2012 Indian Ocean earthquakes Indonesia, Indian Ocean April 11 17 2013 8.3 0 2013 Okhotsk Sea earthquake Russia May 24 19 2014 8.2 6 2014 Iquique earthquake Chile April 1 12 2015 8.3 14 2015 Illapel earthquake On 11 April 2012 at 15:38 local time a large undersea earthquake with a magnitude of 8.6 struck offshore, 434km southwest from the Indonesian province of Banda Aceh in northern Sumatra. The 11 April 2012 earthquakes (M_w 8.6 and M_w 8.2) were sourced within the Northern Wharton Basin in the northeastern part of the Indo-Australian diffuse plate boundary. Am. & Beroza, G. A rogue earthquake off Sumatra. The India-Australia-Capricorn tectonic plate is said to be splitting apart by 0.06 inch or 1.7 We suggest that the unprecedented delayed triggering power of the 2012 earthquake may have arisen because of its strike-slip source geometry or because the event struck at a time of an unusually low global earthquake rate, perhaps increasing the number of nucleation sites that were very close to failure. An integrated perspective of the continuum between earthquakes and slow-slip phenomena. These structures include previously mapped N–S trending fracture zones within the Northern Wharton Basin and E–W lineations across the Ninetyeast Ridge. The giant tectonic plate in the Indian Ocean between Australia and India is breaking apart, researchers have recently discovered. Correspondence to The 2012 east Indian Ocean earthquake that had a moment magnitude of 8.6 is the largest strike-slip event ever recorded. Two hours later, it triggered another great earthquake of Mw 8.2 in its vicinity. Earthquake Leads Office Evacuation - Sector-V - Salt Lake City - Kolkata 2012-04-11 9367.JPG 4,288 × 2,848; 6.92 MB. Here, we analyze Global Positioning System (GPS), strain meter, and Hi-net short-period seismic data recorded in northeast Japan in the days after the 2012 M w (moment magnitude) 8.6 Indian Ocean earthquake (IOE). 4, 384–388 (2011), Peng, Z. Res. The main earthquake occurred with a magnitude of 8.6 Mw and was followed by a strong aftershock (8.2 Mw). Soc. Press, 1998), Gonzalez-Huizar, H. & Velasco, A. One of the deadliest natural disasters in recent history, the 2004 … Theoretical Global Seismology Ch. http://www.seismology.harvard.edu/research_sumatra2012.html, http://www.eqh.dpri.kyoto-u.ac.jp/src/etc/sumatra.htm, http://www.iris.edu/spud/backprojection/118733, http://earthquake.usgs.gov/earthquakes/eqinthenews/2012/usc000905e/neic_c000905e_gcmt.php, DynTriPy: A Python Package for Detecting Dynamic Earthquake Triggering Signals, Remote triggering in Iran: large peak dynamic stress is not the main driver of triggering, Characteristics of Frequent Dynamic Triggering of Microearthquakes in Southern California, Inverse Migration of Seismicity Quiescence During the 2019 Ridgecrest Sequence, Earthquake triggering model based on normal-stress-dependent Nagata law: application to the 2016 Mie offshore earthquake. Thank you for visiting nature.com. 4, 312–316 (2011), Lin, C.-H. The 11 April 2012 earthquakes (M w 8.6 and M w 8.2) were sourced within the Northern Wharton Basin in the northeastern part of the Indo-Australian diffuse plate boundary. 2012 Indian Ocean earthquakesの言い換えや別の言い方。・スマトラ島沖地震 (2012年4月) Weblioシソーラスはプログラムで自動的に生成されているため、一部不適切なキーワードが含まれていることもあ … Ocean Sci. Soc. 94, S293–S299 (2004), Koss, H. & Nettles, M. Global CMT Project Moment Tensor Solution: April 11, 2012, Off W Coast of Northern Sumatra, MW = 8.6. http://earthquake.usgs.gov/earthquakes/eqinthenews/2012/usc000905e/neic_c000905e_gcmt.php (2012), Jaeger, J. C. & Cook, N. G. W. Fundamentals of Rock Mechanics Vol. Bull. Terr. The following 5 files are in this category, out of 5 total. We use cookies to help provide and enhance our service and tailor content and ads. 64, 1363–1367 (1974), Friederich, W. & Dalkolmo, J. Complete synthetic seismograms for a spherically symmetric earth by a numerical computation of the Greens function in the frequency domain. April 2012 slip models based on seismological evidence suggest a complex mechanism. Science 336, 1118–1119 (2012), Kiser, E. Preliminary Rupture Modelling of the April 11, 2012 Sumatran Earthquakes. volume 490, pages250–253(2012)Cite this article. ISSN 1476-4687 (online). ADS  http://www.iris.edu/spud/backprojection/118733 (2012), Yue, H., Lay, T. & Koper, K. D. En échelon and orthogonal fault ruptures of the 11 April 2012 great interplate earthquake. 23, 283–290 (2012), McGuire, J. News & Views, Nature Fred F. Pollitz. Bottom line: An 8.7 magnitude earthquake in the Indian Ocean today (April 11, 2012) triggered a tsunami watch, but Pacific Tsunami Warning Center officials said later that the … In the aftermath of the 2004 megathrust earthquake along the nearby Sunda Trench, increased seismicity in the Northern Wharton Basin is attributed to the stress transfer from the Sumatra–Andaman plate boundary. Remote earthquakes in the six days preceding (top) and the six days following (bottom) the M=8.6 main shock in the East Indian Ocean on April 11, 2012. Although remote dynamic triggering of shallow earthquakes has been well documented, there are no previous reported cases of remote dynamic triggering of intermediate-depth earthquakes. Nature 437, 830 (2005), Hill, D. P. & Prejean, S. in Earthquake Seismology (ed. All authors discussed the results and helped write the manuscript. Am. The 2012 earthquake's epicenter was located within the Indo-Australian Plate, which is divided into three separate plates, the Indian, Australian and Capricorn Plates. The other M ≥ 8.5 mainshocks during the past decade are thrusts; after these events, the global rate of occurrence of remote M ≥ 5.5 events increased by about one-third the rate following the 2012 shock and lasted for only two days, a weaker but possibly real increase. Seismol. 94, S332–S347 (2004), Brodsky, E. E. & Prejean, S. G. New constraints on mechanisms of remotely triggered seismicity at Long Valley Caldera. This unusually active oceanic intraplate region has generated many large earthquakes in the past, most of which are believed to have occurred by strike-slip motion, triggered by the NW-SE … Nature 490, 250–253 (2012). Am. Muttarak, Raya and Pothisiri, Wiraporn (2013) The Role of Education on Disaster Preparedness: Case Study of 2012 Indian Ocean Earthquakes on Thailand's Andaman Coast. Remotely triggered seismicity on the United States west coast following the M w 7.9 Denali Fault earthquake. Back projections for MW 8.7 off W coast of Northern Sumatra. Bull. 3, 599–607 (2010), Peng, Z., Vidale, J. E., Wech, A. G., Nadeau, R. M. & Creager, K. C. Remote triggering of tremor along the San Andreas fault in central California. Fred Pollitz and colleagues show that, in the six days following 11 April, the global rate of remote earthquakes with magnitudes greater than 5.5 increased nearly fivefold, and events up to magnitude 7 seem to have been triggered. 1, 375–379 (2008), Gonzalez-Huizar, H., Velasco, A. 11 (Princeton Univ. You are using a browser version with limited support for CSS. Science 260, 1617–1623 (1993), CAS  537–550 ( 1995 ), Husen, S., Parsons, T. & Pankow, K. et.... We are displaying the site without styles and JavaScript L10302 ( 2012 ) Cite article! Cookies to help provide and enhance our service and tailor content and ads United. Australia and India is breaking apart, 2012 indian ocean earthquakes have recently discovered detaching from the Research... H. the energy release in great earthquakes west coast following the M w Denali... Magnitudes of seismic events were obtained from the Indian Ocean earthquake triggered large aftershocks worldwide Basin and lineations! 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( 2001 ), Lin, C.-H Incorporated Research Institutions for Seismology M7.4,. S. Rupture Process of the continuum between earthquakes and slow-slip phenomena the site without styles and JavaScript K. Global of. To ensure continued support, we are displaying the site without styles and JavaScript suggest a complex mechanism history!

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