Mapping of Subsurface Geological Structure and Land Cover Using Microgravity Techniques for Geography and Geophysic Surveys: A Case Study of Maluri Park, Malaysia

  • La Ode Nursalam Department of Geography Education, Halu Oleo University, Kendari, Sulawesi Tenggara, 93232, Indonesia
  • A Arisona Department of Geology Engineering, Halu Oleo University, Kendari, Sulawesi Tenggara, 93232, Indonesia
  • R Ramli Department of Geography Education, Halu Oleo University, Kendari, Sulawesi Tenggara, 93232, Indonesia
  • La Harudu Department of Geography Education, Halu Oleo University, Kendari, Sulawesi Tenggara, 93232, Indonesia
  • Sitti Kasmiati Department of Archeology, Halu Oleo University, Kendari, Sulawesi Tenggara 93232, Indonesia
  • Eko Harianto Department of Agrobusiness, Kendari Terbuka University, Kendari, Sulawesi Tenggara, 93232, Indonesia
  • Fahrudi Ahwan Ikhsan Department of Geography Education, Jember University, East Java, 68121, Indonesia
  • Andri Estining Sejati Department of Geography Education, Sembilanbelas November Kolaka University, Kolaka, Sulawesi Tenggara 93561, Indonesia http://orcid.org/0000-0003-2052-9094

Abstract

A microgravity investigation on bedrock topography was conducted at Maluri park reference level in Kuala Lumpur, Malaysia. The study aim to mapping the near-surface structure and soil and land cover distribution for geography and geophysics surveys.  Two types of cross-section modeling of the residual anomaly generated the MaluriBouguer Anomaly model for site-1 and site-2 at Maluri Park. The 2D microgravity models produced the contour map, displaying the characterization due to density contrast in rock types while mapping the subsurface geological structure at different depths. Moreover, a synthetic model was initiated with the assumption of lateral distance on the left and right sides taken at 50 m and a depth of 60 m. The results of modeling confirmed that the soil and rock type composition on both models site tests are topsoil (1.1 to 1.92 g/cm3), soil (1.8 g/cm3), clay (1.63 g/cm3), gravel (1.7 g/cm3), sand (2.0 g/cm3), shale (2.4 g/cm3), sandstone (2.76 g/cm3), and limestone (2.9 g/cm3). The 2D gravity modeling using two model site tests obtained a correspondence with the observed microgravity data.


Keywords: Bouguer anomaly, limestone, microgravity, soil structure, topography.


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Copyright (c) 2019 Geosfera Indonesia Journal and Department of Geography Education, University of Jember


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Published
2019-11-25
How to Cite
NURSALAM, La Ode et al. Mapping of Subsurface Geological Structure and Land Cover Using Microgravity Techniques for Geography and Geophysic Surveys: A Case Study of Maluri Park, Malaysia. Geosfera Indonesia, [S.l.], v. 4, n. 3, p. 280-290, nov. 2019. ISSN 2614-8528. Available at: <https://jurnal.unej.ac.id/index.php/GEOSI/article/view/13738>. Date accessed: 25 sep. 2020. doi: https://doi.org/10.19184/geosi.v4i3.13738.
Section
Original Research Articles