[H-TT19] Environmental Remote Sensing

[HTT19-P02] ACCURACY INVESTIGATION OF COASTAL BATHYMETRIC MAPPING USING SATELLITE MULTISPECTRAL IMAGES

*Anri Kabe¹, Hiroko Umakawa¹, Yuriko Hagiwara¹, Yutaka Horaku¹ (1.PASCO Corporation)

Keywords:remote sensing, coastal, SPOT6, satellite, multispectral image, bathymetric

Large-scale Large-area coastal bathymetry and seabed classification mapping, it is one of the most important information for coastal monitoring and human activities etc. but costly as increase in its survey area. Therefore there have been many studies to reduce its costs by using satellite observations. Especially bathymetry mapping from satellite-based multispectral data is in expectation to acquire both of coastal bathymetry and seabed classification with less expensive. In this paper, we had bathymetry and seabed classification mapping using satellite multispectral data, then an investigation of accuracy on water depth and seabed classification with field survey data therewith, sort through the issue for practical application. For the investigation, we acquired SPOT6 multispectral image over 13.7km2 area of west side of Izu-Peninsula, and surveyed bathymetrically by rigged a multi-beam bathymetry underneath a small ship simultaneously. Moreover, we record video footage of sea-bottom over the area by an underwater camera to confirm our classification accuracy of seabed.