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Submergence and uplift associated with the giant 1833 Sumatran subduction earthquake : evidence from coral microatolls

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Submergence and uplift associated with the giant 1833 Sumatran subduction earthquake : evidence from coral microatolls

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dc.contributor.author Zachariasen, Judith
dc.contributor.author Sieh, Kerry
dc.contributor.author Taylor, Frederick W.
dc.contributor.author Edwards, R. Lawrence
dc.contributor.author Hantoro, Wahyoe S.
dc.date.accessioned 2012-09-11T01:55:21Z
dc.date.available 2012-09-11T01:55:21Z
dc.date.copyright 1999
dc.date.issued 2012-09-11
dc.identifier.citation Zachariasen, J., Sieh, K., Taylor, F. W., Edwards, R. L., & Hantoro, W. S. (1999). Submergence and uplift associated with the giant 1833 Sumatran subduction earthquake : evidence from coral microatolls. Journal of Geophysical Research, 104(B1), 895–919.
dc.identifier.issn 0148–0227
dc.identifier.uri http://hdl.handle.net/10220/8492
dc.description.abstract The giant Sumatran subduction earthquake of 1833 appears as a large emergence event in fossil coral microatolls on the reefs of Sumatra's outer-arc ridge. Stratigraphic analysis of these and living microatolls nearby allow us to estimate that 1833 emergence increased trenchward from about 1 to 2 m. This pattern and magnitude of uplift are consistent with about 13 m of slip on the subduction interface and suggest a magnitude (Mw ) of 8.8–9.2 for the earthquake. The fossil microatolls also record rapid submergence in the decades prior to the earthquake, with rates increasing trenchward from 5 to 11 mm/yr. Living microatolls show similar rates and a similar pattern. The fossil microatolls also record at least two less extensive emergence events in the decades prior to 1833. These observations show that coral microatolls can be useful paleoseismic and paleogeodetic instruments in convergent tectonic environments.
dc.language.iso en
dc.relation.ispartofseries Journal of geophysical research
dc.rights © 1999 American Geophysical Union. This paper was published in Journal of Geophysical Research and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at the following official URL: http://dx.doi.org/10.1029/1998JB900050. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
dc.subject DRNTU::Science::Geology::Volcanoes and earthquakes
dc.title Submergence and uplift associated with the giant 1833 Sumatran subduction earthquake : evidence from coral microatolls
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1029/1998JB900050
dc.description.version Published version

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