2013 Volume 69 Issue 2 Pages I_651-I_655
In this study, bathymetric data is obtained frequently from operational record (the position by GPS and the depth by fishfinder) of small fishing boats in the nearshore area. Medium-term trends of ebb-tidal delta (ETD) progradation and short-term topographical changes on ETD are detected in comparison of frequent bathymetric data from 2007 to 2012. Analysis of ETD terminal slope (depth of 9-11 m) resulted in 7-9 m/year of annual rate of prograding seaward until June 2011. Bathymetric change analysis shows that concentrated erosion (approximately 2 m vertically) occurred within ETD by effect of high wave condition due to T1106 in July 2011. Longshore sediment transport is estimated from volumetric change of erosion zone on ETD.
PROCEEDINGS OF COASTAL ENGINEERING, JSCE
PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING
