基于MSS/ETM影像辐射沙脊群沙脊地貌遥感演变分析  

Sand Ridge Geomorphic Remote Sensing Evolution Analysis of Radial Sand Ridges Based on MSS/ETM

作　　者：金宇豪 丁贤荣[2] 葛小平[2] 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]河海大学水文与水资源学院,江苏南京210098

出　　处：《地理空间信息》2015年第6期79-81,88,共4页Geospatial Information

基　　金：国家海洋公益性行业科研专项资助项目(201005006-3);江苏省自然科学基金资助项目(BK2012414)

摘　　要：利用遥感分析方法,基于MSS/ETM影像,研究辐射沙脊群演变情况,实现复杂多变辐射沙脊群沙脊地貌的动态检测。重点选用了1973-2011年近40 a的10期低潮位遥感影像,研究了沙脊主轴结构走向、二分水演变和沙洲稳定性。研究结果表明,辐射沙脊群以南北分界点为中心轴顺时针转动,主体沙脊东沙、高泥向远离海岸方向摆动;条子泥总体稳定,先北后南摆动。沙脊结构以大丰、如东一带海岸带为中心,辐射沙脊群主体沙脊向北、东北、东、东南方向呈辐射状发散趋势。Based on remote sensing technologies and MSS/ETM images, a new method was used to analyze the evolution of radial sand ridges, and then near real-time monitoring on dynamic geomorphology of the complicated and changeable area was carried out in this paper.Focusing on selection of 10 low-tidal level remote sensing images from 1973 to 2011 to study the structure of the radial sand ridges, evolution of Erfenshui and tidal flats stability, near real-time remote sensing images were used as the main basic data. The results show that radial sand ridges are turned clockwise, which take the central axis of the north and south boundaries as clockwise rotation point. Dongsha and Gaoni swing away from the coast. Tiaozini is generally stable, showing the new trends of North-erosion and South-deposition. The structure of the sand ridges center on Dafeng, Rudong coastal area and main sand ridge follow the trend of radially divergent.

关 键 词：地貌特征线 地貌演变 辐射沙脊群 沙脊 

分 类 号：P237.9[天文地球—摄影测量与遥感]