Print Email Facebook Twitter The Estimation and Evaluation of Shoreline Locations, Shoreline-Change Rates, and Coastal Volume Changes Derived from Landsat Images Title The Estimation and Evaluation of Shoreline Locations, Shoreline-Change Rates, and Coastal Volume Changes Derived from Landsat Images Author Do, T.K.A. (TU Delft Coastal Engineering; The University of Da Nang) de Vries, S. (TU Delft Coastal Engineering) Stive, M.J.F. (TU Delft Coastal Engineering) Date 2019 Abstract Shoreline-change data are of primary importance for understanding coastal erosion and deposition as well as for studying coastal morphodynamics. Shoreline extraction from satellite images has been used as a low-cost alternative and as an addition to traditional methods. In this work, satellite-derived shorelines and corresponding shoreline-change rates and changes in volumes of coastal sediments have been estimated and evaluated for the case of the data-rich North-Holland coast. This coast is globally unique for its long in situ monitoring record and provides a perfect case to evaluate the potential of shoreline mapping techniques. A total of 13 Landsat images and 233 observed cross-shore profiles (from the JAaRlijkse KUStmeting [JARKUS] database) between 1985 and 2010 have been used in this study. Satellite-derived shorelines are found to be biased in seaward direction relative to the JARKUS-derived shorelines, with an average ranging 8 m to 9 m over 25 years. Shoreline-change rates have been estimated using time series of satellite-derived shorelines and applying linear regression. The satellite-derived shoreline-change rates show a high correlation coefficient (R2> 0.78) when compared with the JARKUS-derived shoreline-change rates over a period of 20 and 25 years. Volume changes were calculated from the satellite-derived shoreline-change rates using assumptions defining a closure depth. Satellite-derived volume changes also show a good agreement with JARKUS-based values. Satellite-derived shorelines compare better with in situ data on beaches that have intertidal zone widths ranging from one- to two-pixel sizes (30 m-60 m). The results show that the use of Landsat images for deriving shorelines, shoreline-change rates, and volume changes have accuracies comparable to observed JARKUS-based values when considering decadal scales of measurements. This shows the potential of applying Landsat images to monitor shoreline change and coastal volume change over decades. Subject coastal volume changesLandsat imagesshoreline-change rateshoreline-position uncertainty To reference this document use: http://resolver.tudelft.nl/uuid:53fcf3c4-055d-4ae7-85e9-77e2949ca091 DOI https://doi.org/10.2112/JCOASTRES-D-18-00021.1 ISSN 0749-0208 Source Journal of Coastal Research: an international forum for the Littoral Sciences, 35 (1), 56-71 Part of collection Institutional Repository Document type journal article Rights © 2019 T.K.A. Do, S. de Vries, M.J.F. Stive Files PDF jcoastres_d_18_00021.1_1.pdf 1.5 MB Close viewer /islandora/object/uuid:53fcf3c4-055d-4ae7-85e9-77e2949ca091/datastream/OBJ/view