Reconstruction of 1852 Banda Arc megathrust earthquake and tsunami

TszMan L. Fisher () and Ron A. Harris
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TszMan L. Fisher: Brigham Young University
Ron A. Harris: Brigham Young University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2016, vol. 83, issue 1, No 32, 667-689

Abstract: Abstract In 1852, a 5-min long earthquake struck the Banda Arc region of Indonesia that was felt over most of Indonesia. It caused uplift of new islands and sent a tsunami across the Banda Sea that reached a height of 8 m at Banda Neira and was also registered at Ambon, Saparua and other islands. Records of the 1852 earthquake at multiple locations provide the constraints needed to reconstruct the disastrous event through numerical modeling using Clawpack. Tsunami heights at various locations are the primary observations we use to test modeling results. The best fit models indicate that the earthquake was most likely a megathrust event along the Tanimbar Trough of >Mw 8.4. At least 10–15 m of elastic strain has accumulated along the Tanimbar Through since the 1852 event, which is enough to cause an earthquake of similar size to the one in 1852. However, 10 times more people in the region are exposed to tsunami hazards than in the past.

Keywords: Megathrust earthquake; Tsunami modeling; Eastern Indonesia; Banda Arc; Tanimbar Trough; Historical earthquake (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/s11069-016-2345-6

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