| Author | Chong, Kwong Yean |
| Call Number | AIT Thesis no.GT-87-26 |
| Subject(s) | Hydrogeology
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GT-87-26 |
| Abstract | The geology of the study area consists of
unconsolidated fluvial and aeolian sediments overlying a
weathered bedrock, the Mahasarakam Formation. The age of
some of the geological units obtained and the landform
features suggest that the landform here is very young. The
thickness of these Quaternary sediments are generally not
more than 2 meters on average, based on field and
resistivity investigations. Hence, the surficial deposits
here are not important aquifers for groundwater The
groundwater in the study area is found mainly within the
fractured and faulted bedrock. Weathering of the bedrock
also increases the storage capacity of the aquifer.
The quality of the groundwater here is dependent on the
topography of the well sites. In areas of high elevations
which are also the anticlines of the underlying Mahasarakam
Formation, the groundwater is generally of low salinity and
high quality. In the floodplains which occupy the lowest
elevations, the groundw~ter is highly saline and of low
standards. The source of the salinity here is caused by the
uprising of brine from the dissolution of the salt beds
within the Mahasarakam Formation. High nitrate content of
the groundwater is caused by the leachates from the surface
waste materials and the use of fertilizers in the fields.
About 32% of the annual precipitation or about 1200 mm.
occurs as the groundwater recharge and of these, about 45 %
or 80 million m3 for the study area, are good quality
drinking water. The remainder of the precipitation is due to
loss from runoff into streams and to evapotranspiration. |
| Year | 1988 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GT-87-26 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical and Transportation Engineering (GT) |
| Chairperson(s) | Prinya Nutalaya; |
| Examination Committee(s) | Balasubramaniam, A.S ; Noppadol Phienwej ; |
| Scholarship Donor(s) | Government of Italy ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1988 |