Authors / CoAuthors
Cummins, P. | Baba, T. | Hong Kie, T.
Abstract
Since the 2004 Sumatra-Andaman earthquake and Indian Ocean Tsunami, there has been an increase both in the frequency of large earthquakes, and in the data for monitoring the seismic and sea level disturbances associated with them, especially in the Australasian region. The increased number of high-quality recordings available for these large earthquakes provides an important opportunity to assess methods for rapid determination of their source properties, which potentially could be used to support tsunami warning systems. In this presentation we will consider how well the available data allow us to characterise the rupture of a earthquake, consider how rapidly this could be done, and assess how well the resulting models can be used to predict far -field tsunami waveforms. The earthquakes conside red include the Tonga and Java earthquakes of 2006 (Mw=8.0 and 7.7, respectively), the earthquakes in the Kuriles Islands in 2006 and 2007 (Mw=8.3 and 8.1, respectively), and the 2007 earthquakes in the Solomon Islands and off Sumatra (Mw=8.1, 8.4 and 7.9, respectively). We also discuss some of the important implications the rupture models obtained for these earthquakes have for earthquake and tsunami hazard in the Australasia region. These implications include the possible need to re -consider the maximum credible size of megathrust earthquakes in the SW Pacific subduction zones, and the potential for triggering of further large earthquakes in the Indonesian subduction zone.
Product Type
nonGeographicDataset
eCat Id
65587
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Custodian
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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2601
Australia
Keywords
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- External Publication
- ( Theme )
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- earthquakes
- ( Theme )
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- tsunamis
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2008-01-01T00:00:00
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geoscientificInformation
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[-90.0, 0.0, 90.0, -150.0]
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