粤西水东湾潮汐通道—落潮三角洲的动力地貌过程

MORPHODYNAMIC PROCESSES OF TIDAL INLET AND EBB-TIDAL DELTA IN THE BARRIER- LAGOON SYSTEM: SHUIDONG AREA, WEST GUANGDONG PROVINCE

本文论述了广东省水东沙坝泻湖海岸体系中潮汐通道和落潮三角洲的动力地貌过程,包括通道的潮汐与波浪动力特点、落潮三角洲区域动力与泥沙运动、拦门沙成因及落潮三角洲近期冲淤动态等,最后对通道稳定性和拦门沙开挖可能性进行讨论,认为该通道稳定性好,拦门沙只要采取深挖措施且开挖方向较合理,有可能取得成效。

Based on the data of investigation in 1982-1985 at the Shuidong Area, 'West Guangdong Province, the morphodynamic processes of tidal inlet and ebb-tidal delta in the barrier-lagoon system are presented, including the inlet dynamic features, the wave climate, the longshore sediment transport, the dynamics and sediment motion on the ebb-tidal delta.the origin of entrance bar and the recent erosion or silting in the ebb-tidal delta. This study attempts to answer the two questions, i.e. the stability of the tidal inlet and the possibility of dredging for the. course on the entrance bar in the Shuidong Harbour.The results show that the stability of the tidal inlet is ideal and that the dredging action on the entrance bar can be successful if the dredging is deep enough and the course position is reasonable.