桟橋に沿った海底底質と上下浜での海底底質の粒度組成 -両者の粒度組成による差異-

Abstract

大潟海岸の中央部に位置している, 京大観測用桟橋を用いて, ひと月に一回測深と海底底質採取を行っている。また, 上下浜で2001年8月6日に測深と海底底質採取を行った。そのうち夏期及び冬期以外で, 両地点の海底地形の変化と海底底質の粒度組成の岸沖方向変異を考察するとともに, 両地点のそれぞれの差異も考察した。また, 海底底質と新砂丘砂の相関関係も検討した。

The Observational Pier which is located at the center of Ogata 's coast, belongs to Kyoto University. This author is carring out sounding using the Pier, to gather sediment from the sea bottom, once a month. Also, this author has carried out sounding and the gathering of sediment off of the sea bottom at Jogehama, on Aug.6.2001.In doing this, this author has considered the changes in the sea bottom profile, and variation from the shore to theoffshore, in the grain size composition of the sediment of the sea bottom. This author has considered the differences between the two places. This author has considered the samples which were observed every year from spring to the fall season, too. Further, this author has examined the correlation between the sediment of the sea bottom and samples from recent dune sand.