南海区重点岸段海岸侵蚀现状成因分析与防治对策

The Status, Reasons and Countermeasures for the Coastal Erosion of the Important Coasts in the South China Sea

在2003年与2006年对南海区琼州海峡两岸重点岸段(雷州市徐闻县龙塘镇赤坎村岸段、海南省海口市镇海村岸段和新海村岸段)的海岸侵蚀进行了现场监测,测量了侵蚀的长度、宽度和面积。对两年现场测量结果进行比较分析,结果表明:海岸侵蚀长度的平均速度为200m/a,宽度的平均速度为20m/a,面积的平均速度为4000m2/a。应用了地质分析、水动力分析、极端海洋气候影响分析等新的理论和方法重点分析了海岸侵蚀的成因,并提出了一些对策,供相关部门参考。

In 2003 and 2006, field surveys were conducted on the important erosive coasts in Qiongzhou Strait of the South China Sea, one lie in Chikan of Xuwen, Guangdong, the other in Xinhai and Zhenhai of Haikou, Hainan. The length, width and area of coastal erosion were measured, taking pictures related. Through comparison and analysis of the results from field surveys, it is concluded that the average erosive speed of length is 200 m/a; the average erosive speed of width is 20 m/a; the average erosive speed of area is 4 000 m^2/a. Thus, the tendency and reasons of the coastal erosion were analyzed applying the new theories and analyzing methods from the view of geology, hydrodynamics, uttermost oceanic climate, etc., and the preventive and protective countermeasures were proposed as the related agencies＇ reference.