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Modelling of historical tsunami in eastern Indonesia: 1674 Ambon and 1992 Flores case studies

Pranantyo, Ignatius Ryan; Cummins, Phil; Griffin, Jonathan; Davies, Gareth; Latief, Hamzah

Description

In order to reliably assess tsunami hazard in eastern Indonesia, we need to understand how historical events were generated. Here we consider two such events: the 1674 Ambon and the 1992 Flores tsunamis. Firstly, Ambon Island suffered a devastating earthquake that generated a tsunami with 100 m run-up height on the north coast of the island in 1674. However, there is no known active fault around the island capable of generating such a gigantic wave. Rumphius' report describes that the initial...[Show more]

dc.contributor.authorPranantyo, Ignatius Ryan
dc.contributor.authorCummins, Phil
dc.contributor.authorGriffin, Jonathan
dc.contributor.authorDavies, Gareth
dc.contributor.authorLatief, Hamzah
dc.contributor.editorMeilano I.Zulfakriza
dc.coverage.spatialTBC
dc.date.accessioned2020-01-03T00:33:37Z
dc.date.available2020-01-03T00:33:37Z
dc.date.created11 to 12 October 2016
dc.identifier.isbn9780735415317
dc.identifier.issn0094-243X
dc.identifier.urihttp://hdl.handle.net/1885/196479
dc.description.abstractIn order to reliably assess tsunami hazard in eastern Indonesia, we need to understand how historical events were generated. Here we consider two such events: the 1674 Ambon and the 1992 Flores tsunamis. Firstly, Ambon Island suffered a devastating earthquake that generated a tsunami with 100 m run-up height on the north coast of the island in 1674. However, there is no known active fault around the island capable of generating such a gigantic wave. Rumphius' report describes that the initial wave was coming from three villages that collapsed immediately after the earthquake with width as far as a musket shot. Moreover, a very high tsunami was only observed locally. We suspect that a submarine landslide was the main cause of the gigantic tsunami on the north side of Ambon Island. Unfortunately, there is no data available to confirm if landslide have occurred in this region. Secondly, several tsunami source models for the 1992 Flores event have been suggested. However, the fault strike is quite different compare to the existing Flores back-arc thrust and has not been well validated against a tide gauge waveform at Palopo, Sulawesi. We considered a tsunami model based on Griffin, et al., 2015, extended with high resolution bathymetry laround Palopo, in order to validate the latest tsunami source model available. In general, the model produces a good agreement with tsunami waveforms, but arrives 10 minutes late compared to observed data. In addition, the source overestimates the tsunami inundation west of Maumere, and does not account for the presumed landslide tsunami on the east side of Flores Island.
dc.description.sponsorshipThis research was partially funded by the Australian Department of Foreign Affairs and Trade (DFAT) through the Australian Awards Scholarship and Research School of Earth Sciences, the Australian National University’s student grant.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherConference Organising Committee
dc.relation.ispartofseries6th International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2016
dc.sourceAIP Conference Proceedings
dc.titleModelling of historical tsunami in eastern Indonesia: 1674 Ambon and 1992 Flores case studies
dc.typeConference paper
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume1857
dc.date.issued2017
local.identifier.absfor040604 - Natural Hazards
local.identifier.ariespublicationu6048437xPUB322
local.publisher.urlhttps://aip.scitation.org
local.type.statusPublished Version
local.contributor.affiliationPranantyo, Ignatius Ryan, College of Science, ANU
local.contributor.affiliationCummins, Phil, College of Science, ANU
local.contributor.affiliationGriffin, Jonathan, Geoscience Australia
local.contributor.affiliationDavies, Gareth, Geoscience Australia
local.contributor.affiliationLatief, Hamzah, Institut Teknologi Bandung
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage090005-1
local.bibliographicCitation.lastpage090005-7
local.identifier.doi10.1063/1.4987104
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2019-08-04T08:23:18Z
local.identifier.scopusID2-s2.0-85028431996
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/0094-243X/..."Publishers version/PDF may be used on author's personal website, arXiv, institutional website, institutional repository, funders designated repository or private forums on social academic network after 12 months embargo" from Sherpa/Romeo site as at 1 Jan 2020.
CollectionsANU Research Publications

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