机载激光雷达扫描揭示海原断裂带微地貌的精细结构
|
摘要
第四纪地貌体的位错精确测量是活动断裂研究的基础,提高地形数据的分辨率是关键.激光雷达三维扫描(LiDAR)是一种快速获取高精度地形数据的先进有效方法.在我国一条标志性的大型活动断裂——海原断裂带上成功开展了机载激光雷达扫描,覆盖128km的区段,获取了高密度的激光点云数据和达0.5m分辨率的数字高程模型(DEM),实现了对海原断裂带的微地貌形态和断层几何的高清晰度三维再现.高密度大范围的三维激光扫描促进断裂活动性和古地震复发规律的精细化研究.
Accurately measuring landform offset is a core component in active fault studies, the resolution of topographic description of landform thus plays a critical role. Airborne Light Detection and Ranging (LiDAR) is a new and powerful tool for efficient acquisition of topographic data with cm- to mm- resolution. We recently acquired approximately 128 kilometers of airborne LiDAR topographic data along the Haiyuan fault, producing 0.5 meter DEMs of the ground surface. The newly obtained LiDAR data reveal fault traces with unprecedented clarity. Airbone LiDAR data, carrying features such as high density, large areal coverage and true 3D, provide an extraordinary opportunity to advance our understanding of active faults and their earthquake recurrence behavior.
Accurately measuring landform offset is a core component in active fault studies, the resolution of topographic description of landform thus plays a critical role. Airborne Light Detection and Ranging (LiDAR) is a new and powerful tool for efficient acquisition of topographic data with cm- to mm- resolution. We recently acquired approximately 128 kilometers of airborne LiDAR topographic data along the Haiyuan fault, producing 0.5 meter DEMs of the ground surface. The newly obtained LiDAR data reveal fault traces with unprecedented clarity. Airbone LiDAR data, carrying features such as high density, large areal coverage and true 3D, provide an extraordinary opportunity to advance our understanding of active faults and their earthquake recurrence behavior.
引文
1Ackermann F.ISPRS J Photogram Remote Sens,1999,54:65–67
2Axelsson P.ISPRS J Photogram Remote Sens,1999,54:138–147
3刘经南,张小红.武汉大学学报-信息科学版,2003,28:132–137
4Meng X,Wang L,Siluan J,et al.ISPRS J Photogram Remote Sens,2009,64:117–124
5Hudnut K,Borsa A,Glennie C,et al.Bull Seism Soc Am,2002,92:1570–1576
6Zielke O,Arrowmith J,Grant Ludwig L,et al.Science,2010,327:1119–1122
7Zielke O,Arrowmith J,Grant Ludwig L,et al.Bull Seism Soc Am,2012,102:1135–1154
8Oskin M,Arrowsmith J,Corona A,et al.Science,2012,335:702–705
9Li D.Photogram Eng Remote Sens,2009,75:507–509
10马洪超,姚春静,张生德.遥感学报,2008,6:925–932
11Tapponnier P,Xu Z Q,Roger F,et al.Science,2001,294:1671–1677
12邓起东,张培震,冉勇康,等.中国科学D辑:地球科学,2002,32:1020–1030
13Deng Q,Chen S,Song F,et al.Variations in the Geometry and Amount of Slip on the Haiyuan(Nanxihua shan)Fault Zone,China and the Surface Rupture of the1920Haiyuan Earthquake.Earthquake Source Mechanics,Geophysical Monograph37(Maurice Ewing6),1986.169–l82
14Zhang W,Jiao D,Zhang P,et al.Bull Seism Soc Am,1987,77:117–131
15刘百篪,张俊玲,吴建华,等.中国地震,2003,19:386–399
16Gaudemer Y,Tapponnier P,Meyer B,et al.Geophys J Int,1995,120:599–645
17Liu-Zeng J,Klinger Y,Xu X,et al.Bull Seism Soc Am,2007,97:14–34
18国家地震局地质研究所,宁夏回族自治区地震局.海原活动断裂带.北京:地震出版社,1990.1–286
19Zhang P,Molnar P,Burchfiel B C,et a1.Quat Res,1988,30:151–164
20翁文灏.民国九年十二月十六日甘肃的地震.科学,1922,7:105–114
21Cowgill E,Bernardin T S,Oskin M E,et al.Geosphere,2012,8:787–804
22Cracknell A P,Hayes L.Introduction to Remote Sensing.2nd ed.London:Taylor and Francis.2007
23马洪超.地球科学,2011,36:347–354
24http://lidar.cr.usgs.gov/www.opentopography.com
2Axelsson P.ISPRS J Photogram Remote Sens,1999,54:138–147
3刘经南,张小红.武汉大学学报-信息科学版,2003,28:132–137
4Meng X,Wang L,Siluan J,et al.ISPRS J Photogram Remote Sens,2009,64:117–124
5Hudnut K,Borsa A,Glennie C,et al.Bull Seism Soc Am,2002,92:1570–1576
6Zielke O,Arrowmith J,Grant Ludwig L,et al.Science,2010,327:1119–1122
7Zielke O,Arrowmith J,Grant Ludwig L,et al.Bull Seism Soc Am,2012,102:1135–1154
8Oskin M,Arrowsmith J,Corona A,et al.Science,2012,335:702–705
9Li D.Photogram Eng Remote Sens,2009,75:507–509
10马洪超,姚春静,张生德.遥感学报,2008,6:925–932
11Tapponnier P,Xu Z Q,Roger F,et al.Science,2001,294:1671–1677
12邓起东,张培震,冉勇康,等.中国科学D辑:地球科学,2002,32:1020–1030
13Deng Q,Chen S,Song F,et al.Variations in the Geometry and Amount of Slip on the Haiyuan(Nanxihua shan)Fault Zone,China and the Surface Rupture of the1920Haiyuan Earthquake.Earthquake Source Mechanics,Geophysical Monograph37(Maurice Ewing6),1986.169–l82
14Zhang W,Jiao D,Zhang P,et al.Bull Seism Soc Am,1987,77:117–131
15刘百篪,张俊玲,吴建华,等.中国地震,2003,19:386–399
16Gaudemer Y,Tapponnier P,Meyer B,et al.Geophys J Int,1995,120:599–645
17Liu-Zeng J,Klinger Y,Xu X,et al.Bull Seism Soc Am,2007,97:14–34
18国家地震局地质研究所,宁夏回族自治区地震局.海原活动断裂带.北京:地震出版社,1990.1–286
19Zhang P,Molnar P,Burchfiel B C,et a1.Quat Res,1988,30:151–164
20翁文灏.民国九年十二月十六日甘肃的地震.科学,1922,7:105–114
21Cowgill E,Bernardin T S,Oskin M E,et al.Geosphere,2012,8:787–804
22Cracknell A P,Hayes L.Introduction to Remote Sensing.2nd ed.London:Taylor and Francis.2007
23马洪超.地球科学,2011,36:347–354
24http://lidar.cr.usgs.gov/www.opentopography.com
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心