非结构网格三维斜压模型研究人类活动对海南岛清澜潮汐汊道水动力影响

清澜潮汐汊道为海南岛东部一个典型的泻湖-潮汐汊道-沙坝系统,由于其优越的自然条件而成为开发的重点区域。近几年的人类活动主要包括:口门西侧的围填工程,航道的疏浚和八门湾泻湖内的围塘工程。采用SELFE模型,结合观测资料,研究了不同人类活动对潮汐汊道的潮波、潮通量与涨落潮历时、河口重力环流、盐水入侵和河口羽流的影响。结果表明不同的人类活动其对动力的影响不同,口门西侧围填工程减小了潮汐汊道的潮差,对潮通量和盐水入侵影响很小;航道疏浚则加大了潮差和潮通量,加强了河口环流和盐水入侵;泻湖内围塘工程使潮差有所增大,但减小了潮通量,对盐水入侵的影响不显著。口门西侧围填工程改变了河口羽流的路径,而航道疏浚则使河口羽流更加向海扩散。

Impact of human activities on hydrodynamics of Qinglan tidal inlet system using three-dimensional baroclinic model SELFE with unstructured grid

As a typical lagoon-inlet-sand barrier system in the east of Hainan Island,Qinglan Inlet has been a development focus due to its advantageous natural environment.Human activities in recent years include: land reclamation at the west of inlet gorge,channel dredging and reclamation at the lagoon.Through applying SELFE model,based on observation data,this study examines the effects of various human interventions on tidal wave propagation,tidal flux and asymmetry of flood and ebb tidal duration,estuarine circul...