防災地形分類図と考古学―災害・防災考古学に地形学から期待すること
Archaeological Contributions to the Geomorphological Hazard Map making for Disaster Prevention
阿子島 功
( AKOJIMA Isao )
Abstract：The archaeological excavation method supports the applied Geomorphological map making for disaster prevention as the details of geomorphological history and processes in lowland and hills during the last some 1,000 years are not always known.
The current Flood Hazard Maps in Japan come to show the simulation of high risk area in the case of the supposed extreme rainfall that is the 1-in- about 1000 years rainfall. To prove the existence or no-existence of 1 in 1000 years flood, only the archaeological method is effective now.
In the flexible soil mapping based on boring and geomorphic reading, the knowledge of the micro-relief at some time in the past which archaeological survey excavated is helpful.
Diagnosis of stability and un-stability of landslide slope and its movement history are also known in some excavated archaeological sites.
The current Flood Hazard Maps in Japan come to show the simulation of high risk area in the case of the supposed extreme rainfall that is the 1-in- about 1000 years rainfall. To prove the existence or no-existence of 1 in 1000 years flood, only the archaeological method is effective now.
In the flexible soil mapping based on boring and geomorphic reading, the knowledge of the micro-relief at some time in the past which archaeological survey excavated is helpful.
Diagnosis of stability and un-stability of landslide slope and its movement history are also known in some excavated archaeological sites.
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