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Understanding Lateral Marsh Edge Erosion with Terrestrial Laser Scanning (TLS)

Department of Ecosystem Science and Management, Texas A&M University, College Station, TX 77845, USA
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Remote Sens. 2019, 11(19), 2208; https://doi.org/10.3390/rs11192208
Received: 19 August 2019 / Revised: 18 September 2019 / Accepted: 19 September 2019 / Published: 21 September 2019
(This article belongs to the Special Issue Lidar for Ecosystem Science and Management)
Coastal wetlands are a crucial buffer zone between land and sea but lateral erosion threatens their long-term sustainability. Better understanding of the forces leading to lateral marsh retreat will benefit the assessment of management options applied to mitigate the erosion. Terrestrial Laser Scanning (TLS), Light Detection and Ranging (lidar), and associated technologies are increasingly being used to assess this erosion. The central objective of this study was to identify a methodology for measuring marsh edge erosion with a TLS and correlate that erosion with exposed roots and incident wave energy. We quantified edge erosion across multiple temporal and spatial scales using a TLS, showing greater than one meter of lateral erosion over a 318-day period. We then evaluated the relationships between the erosion and incident wave energy along with erosion and vegetation roots. Wave height and erosion was strongly related (r2 = 0.99), while vegetation roots did not show an apparent effect. We discuss the challenges that arise from using TLS equipment, TLS data sets, and the use of voxels to measure marsh edge erosion. View Full-Text
Keywords: lidar; terrestrial laser scanner; voxelization; marsh edge erosion; wind waves lidar; terrestrial laser scanner; voxelization; marsh edge erosion; wind waves
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MDPI and ACS Style

Huff, T.P.; Feagin, R.A.; Delgado, A., Jr. Understanding Lateral Marsh Edge Erosion with Terrestrial Laser Scanning (TLS). Remote Sens. 2019, 11, 2208.

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