THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism
Based on the keyboard model of tsunamigenic earthquakes, an analysis was performed of the physical aspects of the 26 December 2004 earthquake off Sumatra and of the seismic source of the great tsunami generated in the Indian Ocean. A simplified keyboard model with vertical displacements of keyboard...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Tsunami Society International
2012-01-01
|
Series: | Science of Tsunami Hazards |
Subjects: | |
Online Access: | http://www.tsunamisociety.org/312MazovaEtAl.pdf |
id |
doaj-ab6e61edee204bdc828b417e2df19f41 |
---|---|
record_format |
Article |
spelling |
doaj-ab6e61edee204bdc828b417e2df19f412021-04-02T03:15:55ZengTsunami Society InternationalScience of Tsunami Hazards8755-68392012-01-01312112128THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source MechanismR MazovaB Kisel’manN BaranovaL LobkovskyBased on the keyboard model of tsunamigenic earthquakes, an analysis was performed of the physical aspects of the 26 December 2004 earthquake off Sumatra and of the seismic source of the great tsunami generated in the Indian Ocean. A simplified keyboard model with vertical displacements of keyboard blocks was used for the numerical simulation in defining the tsunami’s generation source and, based on known bathymetry, its subsequent propagation across the Indian Ocean basin. The numerical simulation of the seismic source took into account the oblique character of subduction zone, which was characteristic for this particular earthquake. Furthermore, the analysis evaluated the different scenarios of keyboard blocks motions - corresponding to real seismic and hydro acoustic studies of the earthquake process - as reported in the literature. Adequateness of the calculations performed was verified by comparison of real altimetry records of satellite “Yason-1” with virtual altimetric record, obtained by us for each calculation. The computational analysis helped explain the complex character of the tsunami and of its propagation and energy flux distribution in the Indian Ocean basin.http://www.tsunamisociety.org/312MazovaEtAl.pdfIndian Ocean tsunaminumerical modelingsatellite altimetrykeyboard model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
R Mazova B Kisel’man N Baranova L Lobkovsky |
spellingShingle |
R Mazova B Kisel’man N Baranova L Lobkovsky THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism Science of Tsunami Hazards Indian Ocean tsunami numerical modeling satellite altimetry keyboard model |
author_facet |
R Mazova B Kisel’man N Baranova L Lobkovsky |
author_sort |
R Mazova |
title |
THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism |
title_short |
THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism |
title_full |
THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism |
title_fullStr |
THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism |
title_full_unstemmed |
THE INDIAN OCEAN TSUNAMI OF 26 DECEMBER 2004 Analysis of Seismic Source Mechanism |
title_sort |
indian ocean tsunami of 26 december 2004 analysis of seismic source mechanism |
publisher |
Tsunami Society International |
series |
Science of Tsunami Hazards |
issn |
8755-6839 |
publishDate |
2012-01-01 |
description |
Based on the keyboard model of tsunamigenic earthquakes, an analysis was performed of the physical aspects of the 26 December 2004 earthquake off Sumatra and of the seismic source of the great tsunami generated in the Indian Ocean. A simplified keyboard model with vertical displacements of keyboard blocks was used for the numerical simulation in defining the tsunami’s generation source and, based on known bathymetry, its subsequent propagation across the Indian Ocean basin. The numerical simulation of the seismic source took into account the oblique character of subduction zone, which was characteristic for this particular earthquake. Furthermore, the analysis evaluated the different scenarios of keyboard blocks motions - corresponding to real seismic and hydro acoustic studies of the earthquake process - as reported in the literature. Adequateness of the calculations performed was verified by comparison of real altimetry records of satellite “Yason-1” with virtual altimetric record, obtained by us for each calculation. The computational analysis helped explain the complex character of the tsunami and of its propagation and energy flux distribution in the Indian Ocean basin. |
topic |
Indian Ocean tsunami numerical modeling satellite altimetry keyboard model |
url |
http://www.tsunamisociety.org/312MazovaEtAl.pdf |
work_keys_str_mv |
AT rmazova theindianoceantsunamiof26december2004analysisofseismicsourcemechanism AT bkiselman theindianoceantsunamiof26december2004analysisofseismicsourcemechanism AT nbaranova theindianoceantsunamiof26december2004analysisofseismicsourcemechanism AT llobkovsky theindianoceantsunamiof26december2004analysisofseismicsourcemechanism AT rmazova indianoceantsunamiof26december2004analysisofseismicsourcemechanism AT bkiselman indianoceantsunamiof26december2004analysisofseismicsourcemechanism AT nbaranova indianoceantsunamiof26december2004analysisofseismicsourcemechanism AT llobkovsky indianoceantsunamiof26december2004analysisofseismicsourcemechanism |
_version_ |
1724173938084282368 |