Quantitative Analysis of the Waterline Method for Topographical Mapping of Tidal Flats: A Case Study in the Dongsha Sandbank, China
Open Access
- 20 November 2013
- journal article
- research article
- Published by MDPI AG in Remote Sensing
- Vol. 5 (11), 6138-6158
- https://doi.org/10.3390/rs5116138
Abstract
Although the topography of tidal flats is important for understanding their evolution, the spatial and temporal sampling frequency of such data remains limited. The waterline method has the potential to retrieve past tidal flat topography by utilizing large archives of satellite images. This study performs a quantitative analysis of the relationship between the accuracy of tidal flat digital elevation models (DEMs) that are based on the waterline method and the factors that influence the DEMs. The three major conclusions of the study are as follows: (1) the coverage rate of the waterline points and the number of satellite images used to create the DEM are highly linearly correlated with the error of the resultant DEMs, and the former is more significant in indicating the accuracy of the resultant DEMs than the latter; (2) both the area and the slope of the tidal flats are linearly correlated with the error of the resultant DEMs; and (3) the availability analysis of the archived satellite images indicates that the waterline method can retrieve tidal flat terrains from the past forty years. The upper limit of the temporal resolution of the tidal flat DEM can be refined to within one year since 1993, to half a year since 2004 and to three months since 2009.Keywords
This publication has 27 references indexed in Scilit:
- Continental Scale Mapping of Tidal Flats across East Asia Using the Landsat ArchiveRemote Sensing, 2012
- Beach Profiling and LIDAR Bathymetry: An Overview with Case StudiesJournal of Coastal Research, 2011
- Sediment transport over an accretional intertidal flat with influences of reclamation, Jiangsu coast, ChinaMarine Geology, 2011
- Topographic Mapping of the German Tidal Flats Analyzing SAR Images With the Waterline MethodIEEE Transactions on Geoscience and Remote Sensing, 2009
- Semantic-Sensitive Satellite Image RetrievalIEEE Transactions on Geoscience and Remote Sensing, 2007
- Semantics-enabled framework for knowledge discovery from Earth observation data archivesIEEE Transactions on Geoscience and Remote Sensing, 2005
- Beach topography mapping—a comparsion of techniquesJournal of Coastal Conservation, 2000
- Generation of high precision DEMs of the Wadden Sea with airborne interferometric SARIEEE Transactions on Geoscience and Remote Sensing, 2000
- Measurement of Recent Intertidal Sediment Transport in Morecambe Bay using the Waterline MethodEstuarine, Coastal and Shelf Science, 1999
- Cover A digital elevation model of the inter-tidal areas of the Wash, England, produced by the waterline methodInternational Journal of Remote Sensing, 1998