Fig 1.
Location of the provinces of interest in Southern Thailand and identification of the coastal cell divisions for data processing along both coastlines.
The blue contoured area is the only area where manual digitisation was necessary. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 2.
Data derived from on a conglomerate of news reports and the IBTrACTS data available on the National Oceanic and Atmospheric Administration (https://www.ncdc.noaa.gov/ibtracs/).
Fig 3.
Shoreline change measured during the survey period along the Nakhon Si Thammarat coastline.
The dashed arrows indicate the location of major river outlets. Plain arrows are used for geographic locations. The total length of coast is 236.8 km.
Fig 4.
Shoreline change measured during the survey period along the mainland Krabi coastline.
Dashed arrows indicate the location of major river outlets. Plain arrows are used for geographic locations. The total length of coast is 203.8 km. (1) shows a predominantly sandy beach coastline, (2) mostly rocky coast and (3) mostly mangrove coasts.
Fig 5.
Sites selected for more detailed evaluation of processes influencing coastal dynamics.
Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 6.
Representations of the shoreline movements observed during the survey period in site 1.
A) Visualisation of the shoreline positions for the highest water level marks digitised with CoastSat. B) Shoreline movements measured using DSAS between two consecutives chronologically ordered digitised shorelines; negative values correspond to erosion and positive values to accretion. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 7.
Representations of shoreline movements observed during the survey period in site 2.
A) Visualisation of the shoreline positions for the highest water level marks digitised with CoastSat. B) Shoreline movements measured using DSAS between two consecutives chronologically ordered digitised shorelines; negative values correspond to erosion and positive values to accretion. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 8.
Representations of the shoreline movements observed during the survey period in site 3.
A) Visualisation of the shoreline positions for the highest water level marks digitised with CoastSat. B) Shoreline movements measured using DSAS between two consecutives chronologically ordered digitised shorelines; negative values correspond to erosion and positive values to accretion. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 9.
Representations of the shoreline movements observed during the survey period in site 4.
A) Visualisation of the shoreline positions for the highest water level marks digitised with CoastSat. B) Shoreline movements measured using DSAS between two consecutives chronologically ordered digitised shorelines; negative values correspond to erosion and positive values to accretion. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 10.
Representations of the shoreline movements observed during the survey period in site 5.
A) Visualisation of the shoreline positions for the highest water level marks digitised with CoastSat. B) Shoreline movements measured using DSAS between two consecutives chronologically ordered digitised shorelines; negative values correspond to erosion and positive values to accretion. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.
Fig 11.
Representations of the shoreline movements observed during the survey period in site 6.
A) Visualisation of the shoreline positions for the highest water level marks digitised with CoastSat. B) Shoreline movements measured using DSAS between two consecutives chronologically ordered digitised shorelines; negative values correspond to erosion and positive values to accretion. Basemap satellite images accessed from World Imagery ESRI Tile Layer. Credits: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.