期刊
GEOMORPHOLOGY
卷 99, 期 1-4, 页码 120-129出版社
ELSEVIER
DOI: 10.1016/j.geomorph.2007.10.015
关键词
tsunami; flood scours; return channels
Field observations and satellite images indicate that tsunami waves exhibit specific patterns during flooding and recession forming characteristic incisions in the coastal landscape. To study these incisions we analyze high resolution remote sensing images of the coastline of Indonesia, Thailand and Sri Lanka impacted by the tsunami of December 26th, 2004. The analysis sheds light on the different mechanisms by which currents scour incisions during the flooding and receding phases of a tsunami. During flooding the high velocity flow indents the levees of existing tidal channels and bays, leaving short flood scours. The receding water then dissects the coastline with equally spaced return channels widening toward the coast. (c) 2007 Elsevier B.V. All rights reserved.
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