激光雷达(LiDAR):获取高精度古地震探槽信息的一种新技术

3-D LASER SCANNER( LIDAR) : A NEW TECHNOLOGY FOR ACQUIRING HIGH PRECISION PALAEOEARTHQUAKE TRENCH INFORMATION

激光雷达技术是近几十年新发展起来的一种测量技术,已被广泛应用于工程测量、文物保护及地形测量等方面,近几年来活动构造的研究中也已逐步引入。作为活动构造研究的最基础的古地震研究一直还采用传统的地质素描技术进行探槽信息获取,数码照相技术的引入虽然解决了一些问题,但由于照相技术本身的限制,很难克服获取信息的变形和扭曲。激光雷达扫描系统的高信息量、高精度、便捷、安全和易操作等性能,为古地震研究开辟了获取数据信息的新手段和新技术。

LiDAR,as a newly developed surveying technology in recent decades,has been widely used in engineering survey,protection of cultural relics and topographic measurement,and it has also been gradually introduced to studies of tectonic activities. Although the digital photography technology has been used in the study of palaeoearthquake,the information would be still acquired by traditional geological sketch from trenches. Due to the limitation of photography itself,it is difficult to overcome the distortion of information. With its high information content,accuracy,convenience,safety and easy operation,Li DAR,as a new technology,broadens the access to data and information for palaeoearthquake study.