NDLI: Correlative relationships between tsunami height and strong ground motion parameters: Japanese earthquakes

Content Provider	Springer Nature Link
Author	Petukhin, A. G. Gusev, A. A. Chebrov, V. N.
Copyright Year	2015
Abstract	When a large earthquake occurs off a coast, the resulting ground motion can soon be followed by the arrival of tsunami waves. This interrelationship can be useful for issuing tsunami alerts. This study aims at detecting correlative relationships between the intensity (runup) of a tsunami at a site along the coast and ground motion parameters at the same site due to the earthquake that produced the tsunami. Our estimates were derived by combining historical and instrumental data for eight sites along the Pacific coast of Japan. Our regression analysis of collected and systematized data used the tobit model, which is able to incorporate all tsunami data, including those below the tsunami-detection threshold. We show that if such tsunamis are neglected by the standard regression model, the result is to overestimate the height of predicted tsunamis. Analysis of the regression results shows that when a tsunami-generating earthquake has occurred a tsunami with runup that is equal to or greater than 50 cm should be expected if peak ground motion velocities greater than 7 cm/s have been recorded at the same site, with the probability of the failure to predict being 16%.
Starting Page	387
Ending Page	401
Page Count	15
File Format	PDF
ISSN	07420463
Journal	Journal of Volcanology and Seismology
Volume Number	9
Issue Number	6
e-ISSN	18197108
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-12-24
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geophysics/Geodesy Geochemistry Geology
Content Type	Text
Resource Type	Article
Subject	Geology Geochemistry and Petrology Geophysics

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