Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia

Sufficient water supply is a vital process throughout the growth stages in all plants including paddy. Even though Malaysia has an annual rainfall around 2600 millimetres, which is above the global average, the distributions of rainfall are uneven which causes certain areas to face limited water sup...

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Main Author:	Azizan, Fathin Ayuni
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Groundwater - Malaysia Geophysics - Malaysia Prospecting - Geophysical methods
Online Access:	http://psasir.upm.edu.my/id/eprint/56590/1/FK%202015%2012RR.pdf
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spelling	my-upm-ir.565902017-08-03T02:34:19Z Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia 2015-07 Azizan, Fathin Ayuni Sufficient water supply is a vital process throughout the growth stages in all plants including paddy. Even though Malaysia has an annual rainfall around 2600 millimetres, which is above the global average, the distributions of rainfall are uneven which causes certain areas to face limited water supply. In addition to that, seasonal monsoons also affect the pattern of rainfall which leads to dry and wet season. Therefore, an alternative reliable resource of groundwater needs to be investigated with the aim of supplying water continuously over the years. Thus, identifying potential groundwater that can be extracted to irrigate the paddy field area is crucial. In this study, an approach of geophysical technique; 2D resistivity survey was applied. 2D resistivity survey was conducted to result a resistivity profile or familiarly called electrical resistivity tomography (ERT) which represents the subsurface media using RES2DINV software. Wenner-Schlumberger array and a layout of 5 metres electrode spacing for inner and 10 metres for outer cable were employed in all surveys of this study. The resistivity profiles of this study consist of three major lines and six minor lines. Each major line was formed from 7 surveys of 400 metres in length, which made up to 1.6 km after overlapping at 200 metres. SURFER software was used to create this major line resistivity profile. While minor line was made from a single survey of 400metre in length perpendicular to major lines at field. Using the ERT of major and minor lines, one can spot that there are few potential groundwater aquifer located throughout the profiles. Potential aquifer of resistivity profiles were identified based on comparison of geological log to resistivity survey made at that particular well location. The potential groundwater was acknowledged to be in the sand layer which ranges between 50 to 250 Ωm. There were five potential aquifer locations being pointed out at major lines and two at minor lines as on water quantity basis. The resistivity data with x-location of SURFER were later replaced by easting and northing data taken from the topography data using RTK GPS. A 3D skeleton model view of the groundwater potential aquifer at Block C Sawah Sempadan was created. This model shows the location of potential water aquifer spotted at the study area. The development of 3D model view of subsurface profile for selected field will act as reference for further study especially in developing wells in extracting groundwater that is needed to be supplied as irrigation water to the field. Groundwater - Malaysia Geophysics - Malaysia Prospecting - Geophysical methods 2015-07 Thesis http://psasir.upm.edu.my/id/eprint/56590/ http://psasir.upm.edu.my/id/eprint/56590/1/FK%202015%2012RR.pdf application/pdf en public masters Universiti Putra Malaysia Groundwater - Malaysia Geophysics - Malaysia Prospecting - Geophysical methods
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Groundwater - Malaysia Geophysics - Malaysia Prospecting - Geophysical methods
spellingShingle	Groundwater - Malaysia Geophysics - Malaysia Prospecting - Geophysical methods Azizan, Fathin Ayuni Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia
description	Sufficient water supply is a vital process throughout the growth stages in all plants including paddy. Even though Malaysia has an annual rainfall around 2600 millimetres, which is above the global average, the distributions of rainfall are uneven which causes certain areas to face limited water supply. In addition to that, seasonal monsoons also affect the pattern of rainfall which leads to dry and wet season. Therefore, an alternative reliable resource of groundwater needs to be investigated with the aim of supplying water continuously over the years. Thus, identifying potential groundwater that can be extracted to irrigate the paddy field area is crucial. In this study, an approach of geophysical technique; 2D resistivity survey was applied. 2D resistivity survey was conducted to result a resistivity profile or familiarly called electrical resistivity tomography (ERT) which represents the subsurface media using RES2DINV software. Wenner-Schlumberger array and a layout of 5 metres electrode spacing for inner and 10 metres for outer cable were employed in all surveys of this study. The resistivity profiles of this study consist of three major lines and six minor lines. Each major line was formed from 7 surveys of 400 metres in length, which made up to 1.6 km after overlapping at 200 metres. SURFER software was used to create this major line resistivity profile. While minor line was made from a single survey of 400metre in length perpendicular to major lines at field. Using the ERT of major and minor lines, one can spot that there are few potential groundwater aquifer located throughout the profiles. Potential aquifer of resistivity profiles were identified based on comparison of geological log to resistivity survey made at that particular well location. The potential groundwater was acknowledged to be in the sand layer which ranges between 50 to 250 Ωm. There were five potential aquifer locations being pointed out at major lines and two at minor lines as on water quantity basis. The resistivity data with x-location of SURFER were later replaced by easting and northing data taken from the topography data using RTK GPS. A 3D skeleton model view of the groundwater potential aquifer at Block C Sawah Sempadan was created. This model shows the location of potential water aquifer spotted at the study area. The development of 3D model view of subsurface profile for selected field will act as reference for further study especially in developing wells in extracting groundwater that is needed to be supplied as irrigation water to the field.
format	Thesis
qualification_level	Master's degree
author	Azizan, Fathin Ayuni
author_facet	Azizan, Fathin Ayuni
author_sort	Azizan, Fathin Ayuni
title	Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia
title_short	Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia
title_full	Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia
title_fullStr	Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia
title_full_unstemmed	Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia
title_sort	investigation of groundwater potential aquifer using geophysical technique at sawah sempadan, malaysia
granting_institution	Universiti Putra Malaysia
publishDate	2015
url	http://psasir.upm.edu.my/id/eprint/56590/1/FK%202015%2012RR.pdf
_version_	1747812131635462144

Investigation of groundwater potential aquifer using geophysical technique at Sawah Sempadan, Malaysia

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