Spectral Characterisation of Tsunamis and Seiches Caused by Tectonism and Volcanism in Rabaul, Papua New Guinea

C. Sinadinovsk, M. Somerville, K. McCue and B. Talai

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2001, vol. 24, issue 3, 285-294

Abstract: Tsunamis originating in Indonesia and Papua New Guinea can be locally devastating and also occasionally threaten coastal areas of northern Australia. Tsunamis may be caused by earthquakes, volcanoes or submarine landslides. In Rabaul a unique set of records exists of tsunamis and seiches generated by tectonic earthquakes, volcanic earthquakes and a volcanic eruption. Spectral analysis of the digitised waveforms has been undertaken to compare the effects of the different sources and to estimate the characteristic natural periods of Rabaul Harbour. Seiches in Rabaul Harbourhave dominant periods of 20 to 30 min, a period band that is also typical for coastal recordings of tsunamis. Copyright Kluwer Academic Publishers 2001

Keywords: spectral characterization; digitising analogue records; Rabaul; Papua New Guinea; AGSO (search for similar items in EconPapers)
Date: 2001
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DOI: 10.1023/A:1012274601026

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