大论文33.Using LiDAR to characterize logjams in lowland rivers.pdfVIP

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大论文33.Using LiDAR to characterize logjams in lowland rivers.pdf

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Geomorphology 246 (2015) 531–541 Contents lists available at ScienceDirect Geomorphology journal homepage: www.elsevier. com/ locate/geomorph Using LiDAR to characterize logjams in lowland rivers Mahdi Abalharth a,d, Marwan A. Hassan a,⁎, Brian Klinkenberg a, Vivian Leung b, Richard McCleary c a Department of Geography, The University of British Columbia, Vancouver, British Columbia V6T 1Z2, Canada b Department of Earth and Space Sciences, University of Washington, Johnson Hall Rm-070, Box 351310 4000 15th Avenue NE, Seattle, WA 98195-1310, USA c British Columbia Ministry of Forest, Lands and Natural Resource Operations, 1259 Dalhousie Drive Kamloops, British Columbia V2C 5Z5, Canada d Remote Sensing Unit, eMap Division, Information Technology, Saudi Aramco, P.O. Box 20199, Al-Midra Tower, Dhahran 31311, Saudi Arabia a r t i c l e i n f o a b s t r a c t Article history: Logjams signiﬁcantly inﬂuence watershed hydrology, ﬂow regime, channel morphology and stability, and pro- Received 11 February 2015 cesses in lowland rivers. Consequently, logjams play a major role in the existence and conservation of the riparian Received in revised form 24 June 2015 and aquatic ecosystems along major waterways. In this paper, we attempt to detect and quantify logjams in river Accepted 25 June 2015 channels using LiDAR technology in conjunction with traditional ﬁeldwork. To the best of our knowledge, LiDAR- Available online 30 June 2015 based analysis has not been