Sand Ripples and Bedforms

Oral

1330 - Study On Characteristics And Cause Of Sand Waves In The Kanmon Waterway

Presenting Author(s)

• 

  Masaru Yamashiro, PhD

  Associate Professor
  Kyushu University

Additional Author #1(s)

• KO

  Kosaku Oka

  Kyushu University

Additional Author #2(s)

• NH

  Noriaki Hashimoto, PhD

  Professor
  Kyushu Univ

Additional Author #3(s)

• 

  Yasuyuki Nakagawa, PhD

  Professor
  Kyushu University

Additional Author #4(s)

• MY

  Masaki Yokota, PhD

  lecturer
  Kyushu Sangyo University

Additional Author #5(s)

• YI

  Yukifumi Ikki

  Ministry of Land, Infrastructure, Transport and Tourism

Additional Author #6(s)

• MT

  Masaru Takayama

  Ministry of Land, Infrastructure, Transport and Tourism

The Kanmon waterway is one of the most important international routes in Japan. In the waterway, sand waves, which may hamper the ship navigation, develop on the bottom at some places. In this study, the characteristics and cause of the sand waves in the waterway were investigated. The results imply that the long-term fluctuation of tidal currents accompanied by the long-term fluctuation of sea level departure affects the development of sand waves, and that the path variation of Kuroshio (a major warm current) causes the long-term fluctuation of sea level departure in the waterway.