Effects of the change of topographic and wind conditions by constructing sand fence on shifting sand damage at sandy beach in Shonan coast, kanagawa Pref., Japan

Abstract

Micro topographic change, wind conditions (wind velocity,wind direction) and the accumulation of shifting sands etc. were surveyed to verify the effect of the change of topographic and wind conditions by constructing sand fence on shifting sand damage in 2008 and 2014 at Shonan beach, Kanagawa Pref., Japan. As a result, It was considered that the factors of shifting sand damage were (a) existance of artifitial wind or sand barrier, (b) change of wind reduction range by the position of wind barrier. It was also cleared that the manner of accumulated amount of sand was different in each conditions (a) and (b) . Those results showed important suggestions for maintenance and management of coastal forest behind beach.