Journal of the Graduate School of Biosphere Science, Hiroshima University Volume 45
2006-12-20 発行

海砂利採取船から排水される高濁度水中の微粒子の拡散

Dispersion of the small particles in the high turbidity water from sea sand mining boat
Tada, Kuninao
Wada, Sayaka
Ichimi, Kazuhiko
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abstract
The dispersion situation of the small particles in the high turbidity waters from sea sand mining boat was calculated using a simple numerical model. The transparency (Secchi disk depth) decreased remarkably near the discharge spot of high turbidity waters. When the operation of sea sand mining at intervals of two days was repeated, it was clear that the influence area of high turbidity waters spreaded widely. To suppress influence of sea sand mining in a minimum, it was suggested that the operation of sea sand mining at intervals of five days and above should be done.
subject
海砂採取
拡散計算
透明度
操業間隔
sand mining
dispersion model calculation
Secchi disk depth
operation interval
SelfDOI