Probabilistic Tsunami Hazard Assessment from Incomplete and Uncertain Historical Catalogues with Application to Tsunamigenic Regions in the Pacific Ocean

Probabilistic Tsunami Hazard Assessment from Incomplete and Uncertain Historical Catalogues with... The paper presents a new method for empirical assessment of tsunami recurrence parameters, namely the mean tsunami activity rate $$\lambda_{\text{T}}$$ λ T , the Soloviev–Imamura frequency–magnitude power law $$b_{\text{T}}$$ b T -value, and the coastline-characteristic, maximum possible tsunami intensity $$i_{ \text{max} }$$ i max . The three coastline-characteristic recurrence parameters are estimated locally by maximum likelihood techniques using only tsunami event catalogues. The method provides for incompleteness of the tsunami catalogue, uncertainty in the tsunami intensity determination, and uncertainty associated with the parameters in the applied tsunami occurrence models. Aleatory and epistemic uncertainty is introduced in the tsunami models by means of the use of mixture distributions. Both the mean tsunami activity rate $$\lambda_{\text{T}}$$ λ T of the Poisson occurrence model, and the $$b_{\text{T}}$$ b T -value of the Soloviev–Imamura frequency–intensity power law are random variables. The proposed procedure was applied to estimate the probabilities of exceedance and return periods for tsunamis in the tsunamigenic regions of Japan, Kuril–Kamchatka, and South America. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pure and Applied Geophysics Springer Journals

Probabilistic Tsunami Hazard Assessment from Incomplete and Uncertain Historical Catalogues with Application to Tsunamigenic Regions in the Pacific Ocean

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Publisher
Springer International Publishing
Copyright
Copyright © 2017 by Springer International Publishing
Subject
Earth Sciences; Geophysics/Geodesy
ISSN
0033-4553
eISSN
1420-9136
D.O.I.
10.1007/s00024-017-1564-4
Publisher site
See Article on Publisher Site

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