Eolian sand transport monitored by terrestrial laser scanning

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Published Date

21-06-2010

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Source:

Proceedings ISPRS Commission V Mid-Term Symposium ?Close Range Image Measurement Techniques?, Newcastle upon Tyne, UK, 21-24 June 2010; IAPRS, XXXVIII (5), 2010

Faculty

Aerospace Engineering

Department

Remote Sensing

Abstract

Morphodynamic changes at sandy coasts, as are dominant in The Netherlands, are typically monitored at yearly intervals by means of LIDAR. Meanwhile it is recognized that beach morphodynamics is not a regular process but is strongly correlated to meteorological conditions. A time series of 14 terrestrial laser scans of a beach experiment is analyzed, obtained during a time period of 88 hours characterized by changing weather conditions including strong wind and rain. It is shown that after a conversion to a suited spherical grid, different deformation regimes can be identified and that elevation changes rates below a millimeter an hour can be detected.