| dc.description.abstract | The sand accretion/erosion process is mainly responsible for the shoreline position
changes in coastal zones. Understanding sand accretion/erosion response due to
monsoon seasonality and anthropogenic effects is vital for coastal management to
apply the best suitable coastal protection strategies. However, long-term
monitoring of shoreline changes is expensive, time-consuming and labour-intensive.
Instead, satellite imagery (Remote sensing technology) can be utilised as a
substitute method to the field data collection, provided that time-series imagery is
obtainable at the same location and freely downloadable using the Google Earth
Engine archive. This study is mainly focused on shoreline change detection and
geomorphological changes, Mirissa in the Southern coast of Sri Lanka. The ‘CoastSat’
software was employed to obtain the time-series of shoreline positions. According
to the analysis of data, the beach was in 3 states: erosion, accretion, and steady state.
Further, most of the transect locations indicate a steady beach state and it is good
for the development of tourism industry. In addition, the average horizontal
shoreline difference (‘CoastSat’ and field measurement) was 7.95±1 m and that is in
an acceptable range. Accordingly, satellite images downloaded from the Google
Earth Engine using ‘CoastSat’ can be used to analyse shoreline change detection very
effectively with appropriate tidal correction when there is a lack of long-term field
data in the area, and it will be very useful for planning and evaluating coastal
management strategies. | en_US |
