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Examination of three practical run-up models for assessing tsunami impact on highly populated areas

Muhari, Abdul and Imamura, Fumihiko and Koshimura, Sunchi and Post, Joachim (2011) Examination of three practical run-up models for assessing tsunami impact on highly populated areas. Natural Hazards and Earth System Sciences, 11, pp. 3107-3123. DOI: 10.5194/nhess-11-3107-2011.

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Official URL: http://www.nat-hazards-earth-syst-sci.net/11/3107/2011/

Abstract

This paper describes the examination of three practical tsunami run-up models that can be used to assess the tsunami impact on human beings in densely populated areas. The first of the examined models applies a uniform bottom roughness coefficient throughout the study area. The second uses a very detailed topographic data set that includes the building height information integrated on a Digital Elevation Model (DEM); and the third model utilizes different bottom roughness coefficients, depending on the type of land use and on the percentage of building occupancy on each grid cell. These models were compared with each other by taking the one with the most detailed topographic data (which is the second) as reference. The analysis was performed with the aim of identifying how specific features of high resolution topographic data can influence the tsunami run-up characteristics. Further, we promote a method to be used when very detailed topographic data is unavailable and discuss the related limitations. To this purpose we demonstrate that the effect of buildings on the tsunami flow can be well modeled by using an equivalent roughness coefficient if the topographic data has no information of building height. The results from the models have been utilized to quantify the tsunami impact by using the tsunami casualty algorithm. The models have been applied in Padang city, Indonesia, which is one of the areas with the highest potential of tsunami risk in the world.

Document Type:Article
Title:Examination of three practical run-up models for assessing tsunami impact on highly populated areas
Authors:
AuthorsInstitution or Email of Authors
Muhari, AbdulTsunami Engineering Laboratory, Disaster Control Research Center, Graduate School of Engineering, TOHOKU University, Japan
Imamura, FumihikoTsunami Engineering Laboratory, Disaster Control Research Center, Graduate School of Engineering, TOHOKU University, Japan
Koshimura, SunchiTsunami Engineering Laboratory, Disaster Control Research Center, Graduate School of Engineering, TOHOKU University, Japan
Post, JoachimJoachim.Post@dlr.de
Date:2 December 2011
Journal or Publication Title:Natural Hazards and Earth System Sciences
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:11
DOI:10.5194/nhess-11-3107-2011
Page Range:pp. 3107-3123
Status:Published
Keywords:Modelling, tsunami, risk, disaster, people
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Zivile Kriseninformation und Georisiken
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Civil Crisis Information and Geo Risks
Deposited By: Dr.rer.nat. Joachim Post
Deposited On:31 Jan 2012 15:48
Last Modified:12 Dec 2013 21:36

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