2. ศูนย์ประชุมนานาชาติฉลองศิริราชสมบัตครบ 60 ปี
ิ 2
Abstract
The objective of this research is to study shoreline changes in the East Coast of
the Thai Southern Peninsular, from Chumpon to Narathiwat Provinces. The aerial
photographs taken in 2002 and Spot PAN Sharpened satellite photographs taken in 2006 -
2007 were used in shoreline monitoring. The rate of shoreline changes was evaluated by a
map overlaying technique in Geographic Information System (GIS). From the investigated
shoreline covering 1,067 km, it was found that there are 138 km (12.93%) confronted coastal
erosions, while 143 km (13.41%) erosions are in coastal accretion, and 786 km (73.66%)
erosions are in coastal stable zones. The coastal erosion zones can be categorized into 40
erosion hot spots which can be divided into 14 severe erosion sites (rate of retreat more
than 5 meter/year), and 26 moderate erosion sites (rate of retreat 1-5 meter/year). The
coastal accretion can be categorized into 44 sites. Causes of coastal erosion in each site are
different. The major causes are due to strong monsoon waves, lack of coastal sediment, and
human activities. General coastal protective measures can be employed using both hard
and soft solutions. Hard solutions are generally applied in critical erosion beaches. There are
various types of coastal structures, namely breakwaters, seawalls, groins and gabions. Soft
solutions are environmentally friendly measures to renovate erosion beaches. Sand
bypassing, coastal plantation, and defining setback are commonly used as a soft solution.
มูลนิธิศึกษาทางไกลผ่านดาวเทียม ร่วมกับ มหาวิทยาลัยสงขลานครินทร์