1:45 PM - 2:00 PM
[HQR05-07] Landform features of Okinoshima of Munakata city
Keywords:Okinoshima, map, landform, landslide
From the GIS analysis of various kinds of geographic information, I created maps of land and seabed of it and examined the features of the landforms. Furthermore, I carried out morphological and geological surveys on site. Fundamental geospatial data of GSI, map information related to isobaths of JHA and airborne laser scanner data of Munakata city are used as the geographic information. Basic ground elevation maps, slope maps, relief maps and 3D images were created. A landform classification map of land was made by interpretation of each basic map and field survey. Especially in the southwest part, the distribution of steep cliff and landslip lobe, which indicates the existence of landslides, is distinctive. In addition, the three groups of lineaments that trend west-southwest can be interpreted on the ground. From the 3D images etc., it can be identified that the altitude of Okinoshima is about 340 m above the flat seabed. The topography of seabed in the southern part of Okinoshima, is a shallow flat table in the west side and a concave area inclining to the east in the east side. Other landform features that should be investigated in the future are also confirmed in Okinoshima.
In this presentation, I would like to introduce features of the landforms clarified from the analysis of maps by GIS on Okinoshima where access is restricted.