NDLI: Tsunami inundation area and run-up height in the Iwate coastal region following the Great East Japan Earthquake as estimated from aerial photographs and digital elevation data

Content Provider	Springer Nature Link
Author	Yanagawa, Ryoichi Koshi, Shuzo
Copyright Year	2016
Abstract	The Great East Japan Earthquake of 11 March 2011 unleashed a powerful tsunami that struck the coastal region and left death and extensive destruction in its wake. This event prompted many investigations to assess the damage and the extent to which the tsunami affected areas along and adjacent to the coast. In this paper, we use aerial photography and a digital elevation model to assess the inundation extent and run-up height of the tsunami along the coast of Iwate prefecture. First, the size of the area affected by the tsunami was calculated by using the observed borderline trace of its farthest reach inland. Then, elevations above sea level were determined for various points along the trace. This required a variety of approaches because of the variation in the topography and gradient of the slope along the coastline from flat to very steep. The results of our investigation showed that aerial photography can be used successfully to obtain a broad approximate assessment of the reach of a tsunami and associated damage, thereby avoiding the need for immediate on-site inspections. Furthermore, our results suggested that the tsunami run-up height in 2011 could have reached more than 40 m at places scattered along the Iwate coast.
Starting Page	2051
Ending Page	2073
Page Count	23
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	82
Issue Number	3
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-03-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Tsunami inundation area Tsunami run-up height Iwate coast Aerial photograph DEM Natural Hazards Hydrogeology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Civil Engineering Environmental Management
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

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