标题：Liquefaction damage in the Kanto region caused by the 2011 off the Pacific coast of Tohoku Earthquake in Japan, and the land condition of damaged areas detected by time-series geospatial information
期刊名称：Bulletin of the Geographical Survey Institute
印刷版ISSN：0373-7160
出版年度：2013
卷号：61
出版社：Geographical Survey Institute / Ministry of Land, Infrastructure and Transport
摘要：The 2011 off the Pacific coast of Tohoku Earthquake in Japan caused liquefaction in large parts of the Kanto Region, especially in the Tokyo Bay side area and the lower reaches of the Tone River. Liquefaction was concentrated in areas of land reclamation and former river channels, where it is easy to recognize using time-series geospatial information such as old topographical maps and old aerial photographs. The author conducted a field survey about the disaster situation at liquefaction sites in the middle and downstream areas of the Tone River, and conducted research about geographical conditions of the remarkable area affected by liquefaction damage using time-series geospatial information. The time-series geospatial information that was mainly utilized was old French style maps “Rapid Survey Maps”, old topographical maps, past aerial photos, Land Condition Maps and Landform Classification Maps for Flood Control. It is effective to use land historical information detected by time-series geospatial information for mapping of areas of vulnerability.
