Beach changes triggered by construction of detached breakwaters in a part of a pocket beach: The example of tojo and maebara coasts in Kamogawa City in Chiba prefecture

Takaaki Uda, Toshinori Ishikawa, Satoko Seino, Shusuke Watanabe, Masumi Serizawa, Toshiro San-Nami

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Abstract

Beach changes triggered by the construction of detached breakwaters in the pocket beach of 3.8 km length were investigated, taking the Tojo and Maebara :oasts in Kamogawa City in Chiba Prefecture as the example. Shoreline changes were analyzed through the comparison of aerial photographs taken in between 1966 and 1998. Measurements of foreshore slope and sampling test of foreshore materials were carried out. Calm wave zones were formed behind the detached breakwaters and this induced longshore sand transport from outside to the lee side of the detached breakwaters. Fine sand was selectively washed away to form steep slope in the zone far from the detached breakwaters, whereas in the lee side of the detached breakwaters fine sand accumulated to form very gentle slope.

Original languageEnglish
Pages (from-to)217-226
Number of pages10
JournalChikei/Transactions, Japanese Geomorphological Union
Volume22
Issue number2
Publication statusPublished - Apr 1 2001

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breakwater
beach
coast
sand
shoreline change
aerial photograph
city
sampling

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes

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Beach changes triggered by construction of detached breakwaters in a part of a pocket beach : The example of tojo and maebara coasts in Kamogawa City in Chiba prefecture. / Uda, Takaaki; Ishikawa, Toshinori; Seino, Satoko; Watanabe, Shusuke; Serizawa, Masumi; San-Nami, Toshiro.

In: Chikei/Transactions, Japanese Geomorphological Union, Vol. 22, No. 2, 01.04.2001, p. 217-226.

Research output: Contribution to journalArticle

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