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Sains Malaysiana 46(4)(2017): 537–543 http://dx.doi.org/10.17576/jsm-2017-4604-04
Soil Investigation at
Wet World Hot Spring Complex for Future Development using Active
Multichannel Analysis of Surface Waves (Penyelidikan Tanah
di Kompleks Mata Air Panas Wet World bagi Pembangunan Masa Hadapan
menggunakan Analisis Pelbagai Saluran Aktif Gelombang Permukaan) AMIN
E.
KHALIL1*,
MOHD
NAWAWI1,
M.
HARIRI
ARIFIN1,2,3,
FATHI
M.
ABDULLAH1,4,
J.S.
KAYODE1,
NURADDEEN
USMAN1
& ARISONA1 1Geology Department, Faculty
of Science, Helwan University, Egypt 2School of Physics, Universiti
Sains Malaysia, 11800 USM, Penang, Pulau Pinang, Malaysia 3Geology Programme, Faculty
of Science and Technology, Universiti Kebangsaan Malaysia 43600 UKM, Bangi, Selangor
Darul Ehsan, Malaysia 4Geology Department, Faculty
of Applied Science, Taiz University, Taiz 6803, Yemen Received: 8 May 2016/Accepted:
9 September 2016 ABSTRACT Development of hot spring
touristic projects receives more interest in Malaysia in recent
years since the country has a high potential of hot springs that
are vital to the economy. However, such developmental activities
could produce negative impacts if not accompanied with adequate
knowledge of the subsurface conditions. Active multichannel analysis
of surface waves (MASW) was applied to determine
the subsurface shear wave velocities and Vs30. The inverted shear
waves velocity models have then presented in both vertical cross-sectional
plots and depth slices maps. Depth slices were chosen at about 5,
18.5 m and 32 m depths. Model obtained showed that the soil is stiffer
near the highway side and turns to be softer as we go away in the
scrub direction. Vs30 is also estimated and mapped to show the quality
of the soil. Inverted parameters showed that the soil at the site
ranges from soft soil to stiff one. Also, the result obtained proposed
that the surface occurrence of the hot spring might be a result
of intersection of faulted segments, where hot spring is located
near the intersection points. Furthermore, the model helped in proposing
a suitable for complex extension. The proposed is chosen such that
it minimize any possible effects on the geothermal resources at
the site. Keywords: Hot springs;
MASW; Pedas; shear wave velocity; soil properties ABSTRAK Pembangunan projek pelancongan
mata air panas menerima minat yang lebih di Malaysia dalam beberapa
tahun kebelakangan kerana negara mempunyai potensi tinggi daripada
mata air panas yang penting kepada ekonomi. Walau bagaimanapun,
aktiviti pembangunan ini boleh menghasilkan kesan negatif jika tidak
disertakan dengan pengetahuan yang mencukupi tentang keadaan subpermukaan.
Analisis pelbagai saluran aktif oleh gelombang permukaan (MASW) telah digunakan untuk menentukan
kelajuan gelombang subpermukaan ricih dan Vs30. Model halaju gelombang
ricih songsang ini telah dibentangkan dalam kedua-dua plot hirisan
lintang menegak dan hirisan kedalaman peta. Hirisan kedalaman telah
dipilih pada 5, 18.5 m dengan kedalaman 32 m. Model yang diperoleh
menunjukkan bahawa tanah adalah lebih keras berhampiran lebuh raya
tetapi bertukar lembut ke arah belukar. Vs30 juga dianggar dan dipetakan
untuk menunjukkan kualiti tanah. Parameter songsang menunjukkan
tanah di tapak ini berjulat daripada tanah lembut kepada tanah keras.
Selain itu, keputusan yang diperoleh mencadangkan bahawa permukaan
mata air panas ini mungkin terjadi hasil daripada persilangan segmen
tersesar dengan mata air panas terletak berhampiran dengan titik
persimpangan. Selain itu, model ini membantu dalam mencadangkan
pengembangan kompleks yang sesuai. Cadangan ini dipilih kerana ia
meminimumkan sebarang kesan pada sumber geoterma di tapak ini. Kata kunci: Halaju gelombang ricih; MASW;
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