Rupture Process of the 2004 Sumatra-Andaman Earthquake-Reference-Cited by-同舟云学术

Rupture Process of the 2004 Sumatra-Andaman Earthquake

Published:2005-05-20 Issue:5725 Volume:308 Page:1133-1139
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Ammon Charles J.¹²³⁴⁵,Ji Chen¹²³⁴⁵,Thio Hong-Kie¹²³⁴⁵,Robinson David¹²³⁴⁵,Ni Sidao¹²³⁴⁵,Hjorleifsdottir Vala¹²³⁴⁵,Kanamori Hiroo¹²³⁴⁵,Lay Thorne¹²³⁴⁵,Das Shamita¹²³⁴⁵,Helmberger Don¹²³⁴⁵,Ichinose Gene¹²³⁴⁵,Polet Jascha¹²³⁴⁵,Wald David¹²³⁴⁵

Affiliation:

1. Department of Geosciences, Pennsylvania State University, 440 Deike Building, University Park, PA 16802, USA.

2. Seismological Laboratory, California Institute of Technology, MS 252-21, Pasadena, CA 91125, USA.

3. URS Corporation, 566 El Dorado Street, Pasadena, CA 91101, USA.

4. Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK.

5. Chinese Academy of Sciences Key Laboratory of Crust-Mantle Materials and Environments, University of Science and Technology of China, Hefei, Anhui 230026, China.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference38 articles.

1. The diversity of the physics of earthquakes

2. Seismic efficiency can be defined as ER /(ER + EG) where ER is the energy radiated seismically and EG is the energy mechanically dissipated during the fracture.

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4. The Great Sumatra-Andaman Earthquake of 26 December 2004

5. Here we are considering periods shorter than about 2 s as short periods.

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