Research Journal of Science & IT Management - RJSITM - The ...

and Bangladesh is the worst suffer of all cyclonic casualties in the world. About 5.5% cyclonic storms
form in the Bay of Bengal and about 1% cyclonic storm of the global total hits in Bangladesh.
Information concerning Sea Surface Temperature (SST) is needed in the assessment of potential
fishing zone and site selection for marine culture (grouper, snapper, seaweed, and pearls) (Nontji,
1987), which are normally these areas are rich of nutrient. SST is also used as indicator of the
environment required for the living of some marine biota. It is also important for early warning for
cyclone formation. In conventional way, the temperature is observed by using the standard mercury
thermometer from the water sample collected from the ship. This conventional method applies only for
surface water. It is also time consuming and expensive for a large area. With the use of remote sensing
techniques, the skin temperatures at the sea air interface are measured with limited ground
observations. The study of SST distribution model mostly has been used using low to moderate spatial
resolution satellites data, such as NOAA, and MODIS and the result always used for global scale
applications. A lot of papers and reports have been published about algorithm/model for SST mapping
using NOAA data, most common algorithm known are algorithm model by McMillin and Crosby
(Pellegrini and Penrose, 1986; Goda, 1993; McClain, 1981 cited in Hasyim et. al, 1996). Hasyimet. al.
(1996) reported that algorithm model by McMillin and Crosby can represent the condition of SST
distribution in global scale.
In this paper, attempt has been made to prepare a digital map showing the distribution of bathymetry
and SST using Landsat-TM data over selected coastal area of Bangladesh. This will be helpful for
decision makers of coastal zone management and fishing industries development.
2. Objectives
To introduce the new technology in coastal management by using remote sensingtechnique as a
replacement of costly and time consuming conventional way.
To produce a bathymetry map over Bangladeshcoastal areas using satellite image for safe
navigation.
To produce a sea surface temperature map over Bangladesh coastal areas using satellite imagesfor
fishing industry development.
3. Study area, data and software used
3.1 Study area
The study report in this paper is carried out on the coastal area of Bangladesh extending from 89º 15´
59˝ to 91º 05´ 10˝E and 20º 42´38˝ to 22º 35´ 18˝ N (TM frame 137/45). Figure 1 shows the image of
study area.
Study Area
Figure 1: Coastal area of Bangladesh extending from 89º 15´ 59˝ to 91º 05´ 10˝ E and 20º
42´38˝ to 22º 35´ 18˝ N.
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