闽江口悬浮泥沙动态分区的遥感分析  

Division on dynamic areas of suspended silt in Minjiang River mouth by remote sensing analysis

作　　者：窦亚伟[1] 林敏基[1] 

机构地区：[1]国家海洋局第三海洋研究所,厦门361005

出　　处：《台湾海峡》1991年第2期150-155,共6页Journal of Oceanography In Taiwan Strait

摘　　要：本文应用卫星遥感原理,结合丰富的地面资料,对闽江口悬浮泥沙动态分区进行研究,结果表明:闽江口悬浮泥沙动态可划分为4区:①悬沙输移区;②悬沙扩散冲淤区;③悬沙扩散沉降区;④悬沙漂移区。闽江口内、外拦门沙处于悬沙扩散冲淤区内,地形地貌背景、水动力条件和泥沙动态复杂多变。The turbid water mass in the Minjiang River mouth is frequently disintegrated into the Wuzhu, Chuanshi, Outer Bar and Meihua turbid tongues in ebb tides. Each of them is composed of the axial current, lingual body and frontal surface under a complex process of the confluence and distributary between adjacent channels and silt diffusion. The current field reappears these traces, forming a complex and flowered system which consists of the confluences in the southern side and diffusion in the northern of the Chuanshi main stream, and at last the parallel diffusion of all axial currents. The transit area (Ⅰ), diffusion area with silting and scouring (Ⅱ), diffusion area with settling (Ⅲ) and drift area (Ⅳ) of the suspended silt are distinguished in the Minjiang River mouth, based on the features of the turbid tongues, current field as well as Landsat images. The Inner and Outer Bars in the Minjiang River mouth are located in area Ⅱ, in which the topographic and geomorphologic backgrounds, hydrodynamic conditions and dynamic state of silt are complex and variable. The bars of the Minjiang River mouth are being harnessed for the development of the Fuzhou Port. KEYWORDS Suspended matter, dynamics, Fujian

关 键 词：闽江口 泥沙 分区 遥感 

分 类 号：TV148.1[水利工程—水力学及河流动力学]