IMIS - Marine Research Groups | Compendium Coast and Sea

IMIS - Marine Research Groups

[ report an error in this record ]basket (1): add | show Print this page

one publication added to basket [355818]
Measuring surface moisture on a sandy beach based on corrected intensity data of a mobile terrestrial LiDAR
Jin, J.; De Sloover, L.; Verbeurgt, J.; Stal, C.; Deruyter, G.; Montreuil, A.-L.; De Maeyer, P.; De Wulf, A. (2020). Measuring surface moisture on a sandy beach based on corrected intensity data of a mobile terrestrial LiDAR. Remote Sens. 12(2): 209. https://dx.doi.org/10.3390/rs12020209
In: Remote Sensing. MDPI: Basel. ISSN 2072-4292; e-ISSN 2072-4292, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    beach monitoring; mobile terrestrial LiDAR; intensity calibration; beach surface moisture

Authors  Top 
  • Deruyter, G., more
  • Montreuil, A.-L., more
  • De Maeyer, P., more
  • De Wulf, A., more

Abstract
    Surface moisture plays a key role in limiting the aeolian transport on sandy beaches. However, the existing measurement techniques cannot adequately characterize the spatial and temporal distribution of the beach surface moisture. In this study, a mobile terrestrial LiDAR (MTL) is demonstrated as a promising method to detect the beach surface moisture using a phase-based Z&F/Leica HDS6100 laser scanner mounted on an all-terrain vehicle. Firstly, two sets of indoor calibration experiments were conducted so as to comprehensively investigate the effect of distance, incidence angle and sand moisture contents on the backscattered intensity by means of sand samples with an average grain diameter of 0.12 mm. A moisture estimation model was developed which eliminated the effects of the incidence angle and distance (it only relates to the target surface reflectance). The experimental results reveal both the distance and incidence angle influencing the backscattered intensity of the sand samples. The standard error of the moisture model amounts to 2.0% moisture, which is considerably lower than the results of the photographic method. Moreover, a field measurement was conducted using the MTL system on a sandy beach in Belgium. The accuracy and robustness of the beach surface moisture derived from the MTL data was evaluated. The results show that the MTL is a highly suitable technique to accurately and robustly measure the surface moisture variations on a sandy beach with an ultra-high spatial resolution (centimeter-level) in a short time span (12 × 200 m per minute).

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors