机载激光雷达在水下地貌识别与断裂构造精细解译中的应用

• Published in: Hăiyang dĭzhĭ yu dĭsĭjĭ dĭzhĭ Vol. 42; no. 2; pp. 190 - 199
• Main Authors: LIU, Gang, JIN Dingjian, WU, Fang, YU, Kun, LI, Qi, ZHANG, Wenkai, WANG, Jianchao
• Format: Journal Article
• Language: Chinese
• Published: Beijing Marine Geology and Quaternary Geology 01.01.2022; 中国自然资源航空物探遥感中心,北京 100083
• Subjects: Airborne equipment; Bathymetry; Coastal structures; Coastal waters; Coasts; Data processing; Digital cameras; Digital imaging; Fault detection; Fault lines; Fractures; Geologic depressions; Geomorphology; Headlands; High resolution; Identification; Image acquisition; Image resolution; Landforms; Lidar; Marine geology; Ocean floor; Offshore; Photogrammetry; Remote sensing; Resolution; Sandspits; Shallow water; Surveys; Tectonics; Topography; Underwater structures; Beijing China; China; Hainan Island; CZMIL Nova Ⅱ;机载激光雷达测深;海底地貌;海底断裂;精细解译
• ISSN: 0256-1492
• DOI: 10.16562/j.cnki.0256-1492.2021061502

机载激光雷达水深测量是高效获取高精度近岸海底地形的一种新型技术，具有测量精度高、效率高、作业区域广的特点。通过分析CZMIL Nova Ⅱ机载激光雷达测深系统获取的南海某岛高分辨率海底地形数据，发现除地貌类型的识别以外，该数据还可用于海底断裂构造的高精度解译。通过对激光雷达测深渲染图像的解译，发现工作区海底地貌由沙嘴、海岬、海湾、古波切台、岸坡、断陷洼地、峡谷、平原和断块残丘组成；海底发育走向NW、NNW、NNE和NEE的 4组主要断裂，环绕海岛的岸线和水下地貌受多组断裂的控制；海底断裂系统在地表的延伸部分得到了CZMIL Nova Ⅱ系统数字相机同步拍摄的陆地高分辨率图像的验证。本项研究将陆地构造的遥感解译方法拓展到高程渲染图像的水下断裂解译，在清澈水域的海岸带调查工作中具有很大的应用潜力。