| Author | Khin, May Than |
| Call Number | AIT Thesis no. EV-88-16 |
| Subject(s) | Water quality monitoring stations--Thailand--Songkhla lake
|
| Note | A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Songkhla Lake which comprises three interconnected
lagoons - Thale Noi, Thale Luang and Thale Sap - with 1040
km was selected, and certain hydrobiological parameters
were measured in ten sample points. The SPOT image of May
1986 was used to detected the hydrobiological parameters.
The SPOT image was used in two ways classification to
produce turbidity map C supervised and density slicing
method ) and to find the turbidity values as a function of
three spectral bands which operates in multispectral mode.
The reflectance values were extracted by reading the
reflectances in the three bands for small polygonal areas
around the sampling points. The mean values of these
training fields were considered as the characteristic
reflectances at the sampling points. Thematic maps show the
relative quantitative distribution of water quality
variables in the target area. One interesting area which has
very high reflectance values were determined by thematic
maps but could not be checked with the actual surface data
due to the lack of the sampling stations there. However, the
classified image from SPOT data showed homogeneity in the
most of the lagoon. We obtained that the hydrobiological
parameters such as turbidity, salinity, pH, nitrate
nitrogen, phosphate, DO could be correlated with SPOT data.
The statistical models obtained by Stepwise linear
regression showed high coefficient of determination (R). |
| Year | 1988 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | I, Fude ;Galtier, Bertrand
|
| Examination Committee(s) | Ahn, Kyu-Hong ;Kozminski, G.
|
| Scholarship Donor(s) | DAAD |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1988 |