Rupture process of the 2004 Sumatra-Andaman earthquake

Charles J. Ammon; Chen Ji; Hong Kie Thio; David Robinson; Sidao Ni; Vala Hjorleifsdottir; Hiroo Kanamori; Thorne Lay; Shamita Das; Don Helmberger; Gene Ichinose; Jascha Polet; David Wald

doi:10.1126/science.1112260

Rupture process of the 2004 Sumatra-Andaman earthquake

Charles J. Ammon, Chen Ji, Hong Kie Thio, David Robinson, Sidao Ni, Vala Hjorleifsdottir, Hiroo Kanamori, Thorne Lay, Shamita Das, Don Helmberger, Gene Ichinose, Jascha Polet, David Wald

Research output: Contribution to journal › Review article › peer-review

628 Scopus citations

Abstract

The 26 December 2004 Sumatra-Andaman earthquake initiated slowly, with small slip and a slow rupture speed for the first 40 to 60 seconds. Then the rupture expanded at a speed of about 2.5 kilometers per second toward the north northwest, extending 1200 to 1300 kilometers along the Andaman trough. Peak displacements reached ∼15 meters along a 600-kilometer segment of the plate boundary offshore of northwestern Sumatra and the southern Nicobar islands. Slip was less in the northern 400 to 500 kilometers of the aftershock zone, and at least some slip in that region may have occurred on a time scale beyond the seismic band.

Original language	English (US)
Pages (from-to)	1133-1139
Number of pages	7
Journal	Science
Volume	308
Issue number	5725
DOIs	https://doi.org/10.1126/science.1112260
State	Published - May 20 2005

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title = "Rupture process of the 2004 Sumatra-Andaman earthquake",

abstract = "The 26 December 2004 Sumatra-Andaman earthquake initiated slowly, with small slip and a slow rupture speed for the first 40 to 60 seconds. Then the rupture expanded at a speed of about 2.5 kilometers per second toward the north northwest, extending 1200 to 1300 kilometers along the Andaman trough. Peak displacements reached ∼15 meters along a 600-kilometer segment of the plate boundary offshore of northwestern Sumatra and the southern Nicobar islands. Slip was less in the northern 400 to 500 kilometers of the aftershock zone, and at least some slip in that region may have occurred on a time scale beyond the seismic band.",

author = "Ammon, {Charles J.} and Chen Ji and Thio, {Hong Kie} and David Robinson and Sidao Ni and Vala Hjorleifsdottir and Hiroo Kanamori and Thorne Lay and Shamita Das and Don Helmberger and Gene Ichinose and Jascha Polet and David Wald",

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T1 - Rupture process of the 2004 Sumatra-Andaman earthquake

AU - Ammon, Charles J.

AU - Ji, Chen

AU - Thio, Hong Kie

AU - Robinson, David

AU - Ni, Sidao

AU - Hjorleifsdottir, Vala

AU - Kanamori, Hiroo

AU - Lay, Thorne

AU - Das, Shamita

AU - Helmberger, Don

AU - Ichinose, Gene

AU - Polet, Jascha

AU - Wald, David

PY - 2005/5/20

Y1 - 2005/5/20

N2 - The 26 December 2004 Sumatra-Andaman earthquake initiated slowly, with small slip and a slow rupture speed for the first 40 to 60 seconds. Then the rupture expanded at a speed of about 2.5 kilometers per second toward the north northwest, extending 1200 to 1300 kilometers along the Andaman trough. Peak displacements reached ∼15 meters along a 600-kilometer segment of the plate boundary offshore of northwestern Sumatra and the southern Nicobar islands. Slip was less in the northern 400 to 500 kilometers of the aftershock zone, and at least some slip in that region may have occurred on a time scale beyond the seismic band.

AB - The 26 December 2004 Sumatra-Andaman earthquake initiated slowly, with small slip and a slow rupture speed for the first 40 to 60 seconds. Then the rupture expanded at a speed of about 2.5 kilometers per second toward the north northwest, extending 1200 to 1300 kilometers along the Andaman trough. Peak displacements reached ∼15 meters along a 600-kilometer segment of the plate boundary offshore of northwestern Sumatra and the southern Nicobar islands. Slip was less in the northern 400 to 500 kilometers of the aftershock zone, and at least some slip in that region may have occurred on a time scale beyond the seismic band.

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Rupture process of the 2004 Sumatra-Andaman earthquake

Abstract

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