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Oceangraphy
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Barrier Landforms of Thailand - A case study in Narthiwat Province
- band combinations of the Land sat TM imagery
the results of three band combination (B-G-R) are in table-3
combinations of 2,3,4 :2,4,7: and 4,5,7 give better results than the
other combinations .
- Unsupervised classifications .The unsupervised
classification of both subscenes by using various band combination were
not satisfactory for barrier mapping .Similar results from the
supervised classigfication were also obtained . Both classifications
were not suitable for barrier mapping due.
Table -2 Comparison of barrier distinctness as seen from each band of the Land sat TM data ( 7 August 1988 ) of the Taksin area (TK) and the KO Sathon area (Ko)
| Band |
Computer Display* |
Photo Plotter** |
| |
Tk |
Ko |
Tk |
Ko |
1
2
3
4
5
7 |
D
C
C
B
B
B |
D
C
C
A
A
B |
C
C
B
A
A
B |
D
D
C
A
A
B |
*512x512 pixel-line of the geometrically corrected Landsat TM dta displayed on the ERDAS PC.
** Geometric corrected TM data with Lin enhancement: Histogram then plotted on 22x22 cm film band by band (1:50,000) before printing at large scales.
Note : A- Very
Good C= Fair E= very Poor
B-
Good D= Poor
Table -3 Comparison or barrier distinctness as seen from each combination of land sat TM data (7 August 1988) of the Tak Sin (TK) and the Ko sathon areas
| Bands (BGR) |
TK |
KO |
| 247 |
A |
A |
| 154 |
B |
A |
| 432 |
B |
D |
| 321 |
C |
D |
| 457 |
A |
A |
| 123 |
B |
D |
| 451 |
C |
C |
| 741 |
C |
B |
| 751 |
B |
B |
| 235 |
- |
B |
| 234 |
A |
A |
| 345 |
- |
B |
| 374 |
B |
- |
| 753 |
B |
-- |
Note : 1) Each Sub area is 512x512 pixel line of the geometrically corrected landsat Tm data displayed on the ERDAS PC.
2) Relative comparison : A =very Good , C= Fair D= Poor and E= very poor.
Reference.
- Chaimanee N. and s. Tiyapirach 1983 on the coastal morphology songkh;a province southern Thai-land pp. 80-95 In Geomorphology and quaternary Geology of Thailand .Proc. of the first symposium Bangkok. October 1983 Department of Geology Chulalongkorn Univ Dept of mineral Resources and Goel.
- Ehlers J. and F Boker 1989 Detection of short term changes in tidal flat geomorphology .pp. 149-159 In proc. Of the Workshop on Earthnet Pilot Project on Landsat Thematic Mapper Application December 1987 Frascati Italy.
- H.R.H Princess Maha Chakri Sirindhorn S. Silapaacharanan and K. Srisukasawadi 1988 Land use / Land cover map accuracy assessment of Land sat thematic Mapper data using the DIMAPS image processing system for Narathiwat province . pp. 1-15 In proc of the 9th Asian Conference on remote sensing November 1988Bangkok Thailand.
- Hastings . P. and M liengsakul 1983 -Chronology of the late Quaternary climatic changes in Thailand .pp 24-34 In Geomorphology and Quaternary geology of Thailand Proc of the first Symposium Bangkokoctober1983 Department of geology Chulalingkorn Univ Dept. of mineral Resources of Goel Soc. Of Thailand.
- Jones A.R 1986 Unsupervised classification of thematic Mapper imagery for geomorphologic and sediment logy pp. 64-79 In geomorphologic investigations pp. 647-657 In proc of a symposium on Mapping from modern imagery September 1986 ISPRS Edinburgh Scotland.
- Okkerman , J.A 1983 Coastal geomorphology and sediment logy pp. 64-79 In geomorphology and quaternary Geology of Thailand Proc of the first symposium Bangkok october1983 Department of Geology Chulalongkorn Univ dept of mineral resources and Goel soc Thailand .
- Pramojaneee P,. P Hastings M, Liengsakul and Engkul 1986 TheHolecene transgression in peninsular Thailand pp. 551-564 In GEOSEA V Proc. Goel SOC Malaysia April 1986 Goel Soc. Malaysia .
- Shao Xiang Ni and Zhen Min he 1984 Digital Land Sat Image enhancement for geomorphological mapping of the southern Huairon county ofBejing China pp 421-425 Proc. Of remote Sensing Views and Previews September 1984 Reading Berks UK.
- Thunduan V. 1984 Properties genesis and distribution of Podzols (spodosolaThai land Ph. D Thesis Kaset sart Univ Bangkok Thai Land 325 p.
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