Earth's Free Oscillations Excited by the 26 December 2004 Sumatra-Andaman Earthquake-Reference-Cited by-同舟云学术

Earth's Free Oscillations Excited by the 26 December 2004 Sumatra-Andaman Earthquake

Published:2005-05-20 Issue:5725 Volume:308 Page:1139-1144
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Park Jeffrey¹²³⁴⁵,Song Teh-Ru Alex¹²³⁴⁵,Tromp Jeroen¹²³⁴⁵,Okal Emile¹²³⁴⁵,Stein Seth¹²³⁴⁵,Roult Genevieve¹²³⁴⁵,Clevede Eric¹²³⁴⁵,Laske Gabi¹²³⁴⁵,Kanamori Hiroo¹²³⁴⁵,Davis Peter¹²³⁴⁵,Berger Jon¹²³⁴⁵,Braitenberg Carla¹²³⁴⁵,Van Camp Michel¹²³⁴⁵,Lei Xiang'e¹²³⁴⁵,Sun Heping¹²³⁴⁵,Xu Houze¹²³⁴⁵,Rosat Severine¹²³⁴⁵

Affiliation:

1. Department of Geology and Geophysics, Yale University, Post Office Box 208109, New Haven, CT 06520–8109, USA.

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

3. Department of Geological Sciences, 1850 Campus Drive, Evanston, IL 60208–2150, USA.

4. Departement de Sismologie, Institut de Physique du Globe de Paris (IPGP), 4 Place Jussieu, 75252 Paris Cedex 05, France.

5. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093–0225, USA.

Abstract

At periods greater than 1000 seconds, Earth's seismic free oscillations have anomalously large amplitude when referenced to the Harvard Centroid Moment Tensor fault mechanism, which is estimated from 300- to 500-second surface waves. By using more realistic rupture models on a steeper fault derived from seismic body and surface waves, we approximated free oscillation amplitudes with a seismic moment (6.5 × 10 22 Newton·meters) that corresponds to a moment magnitude of 9.15. With a rupture duration of 600 seconds, the fault-rupture models represent seismic observations adequately but underpredict geodetic displacements that argue for slow fault motion beneath the Nicobar and Andaman islands.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference62 articles.

1. Global seismicity of 2003: centroid–moment-tensor solutions for 1087 earthquakes

2. Harvard CMT solutions can be accessed at www.seismology.harvard.edu/CMTsearch.html.

3. Speed and size of the Sumatra earthquake

4. Rupture Process of the 2004 Sumatra-Andaman Earthquake

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

Cited by 216 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. GEOSCOPE Network: 40 Yr of Global Broadband Seismic Data;Seismological Research Letters;2023-12-04

2. Connecting community’s perspectives on tsunami risk to anticipated future tsunamis: a reflection from a progress of tsunami preparedness from a coastal community in Aceh-Indonesia after 19 years of the 2004 Indian Ocean Tsunami;Geoenvironmental Disasters;2023-10-11

3. Crustal structure beneath the Alcock Seamount in the Andaman Sea;Tectonophysics;2023-09

4. Observation of free oscillations after the 2010 Chile and 2011 Japan earthquakes by superconducting gravimeter in Kutch, Gujarat, India;Geodesy and Geodynamics;2023-01

5. A preliminary study on the ultra-wide band ambient noise of the deep underground based on observations of the seismometer and gravimeter;CHINESE J GEOPHYS-CH;2022