oa Investigation of Karst Morphology in the Subsurface of Kinta Valley Using the Gravity Method

A regional gravity survey had been carried out in Kinta Valley, Perak in June 2009 and February 2010. The study area located between latitude line of 4°18’8.4” N and 4°44’04”N and longitude line of 100°55’03”E and 101°57’55.8”E. The valley situated at the centre between the peninsular main range at the western part and Kledang Hill in the east. A total of 372 gravity stations had been measured using the Scintrex CG-5 gravity meter, with stations interval range between 0.5 – 2 kilometre. The Tiernan-Wallace altimeter was use to determine the height of every stations. The reduction process had been done using the software “Magnetic and Gravity Reduction” (MREDUC), and then been gridded, filtered and analysed using the Oasis Montaj (Geosoft) software.