The 2004 Sumatra tsunami in the Southeastern Pacific Ocean: New Global Insight from Observations and Modeling

Rabinovich, A. B.; Titov, V. V.; Moore, C. W.; Eblé, M. C.

doi:10.1002/2017JC013078

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The 2004 Sumatra tsunami in the Southeastern Pacific Ocean: New Global Insight from Observations and Modeling

2017
By Rabinovich, A. B. ; Titov, V. V. ; Moore, C. W. ; ...
Source: Journal of Geophysical Research: Oceans, 122(10), 7992-8019

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Journal Title:

Journal of Geophysical Research: Oceans
Personal Author:

Rabinovich, A. B. ; Titov, V. V. ; Moore, C. W. ; Eblé, M. C.

Rabinovich, A. B. ; Titov, V. V. ; Moore, C. W. ; Eblé, M. C. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

The 2004 Sumatra tsunami was an unprecedented global disaster measured throughout the world oceans. The present study focused on a region of the southeastern Paciﬁc Ocean where the ‘‘west-ward’’ circumferentially propagating tsunami branch converged with the ‘‘eastward’’ branch, based on data from fortuitously placed Chilean DART 32401 and tide gauges along the coast of South America. By compar- ison of the tsunami and background spectra, we suppressed the inﬂuence of topography and reconstructedcoastal ‘‘spectral ratios’’ that were in close agreement with a ratio at DART 32401 and spectral ratios in other oceans. Findings indicate that even remote tsunami records carry spectral source signatures (‘‘birth-marks’’). The 2004 tsunami waves were found to occupy the broad frequency band of 0.25–10 cph with the promi-nent ratio peak at period of 40 min related to the southern fast-slip source domain. This rupture ‘‘hot-spot’’ of/C24350 km was responsible for the global impact of the 2004 tsunami. Data from DART 32401 provided val-
Keywords:

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Earth And Planetary Sciences (miscellaneous) Geochemistry And Petrology Geophysics Oceanography Space And Planetary Science
Source:

Journal of Geophysical Research: Oceans, 122(10), 7992-8019
DOI:

https://doi.org/10.1002/2017JC013078
ISSN:

2169-9275;2169-9291;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:afb0387bb370b547cadf8ed8542f5f25c0f9874ca4b5b028f138f8df1cdd79bf
Download URL:

https://repository.library.noaa.gov/view/noaa/54431/noaa_54431_DS1.pdf
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