Reconstruction of Synthetic Model of the Three and Four Layers for Soil Investigation using Active Multichannel Analysis of Surface Waves
A. Arisona *
Geological Engineering Department, Faculty of Earth Science and Technology, Haluoleo University, Kendari, Indonesia.
K. S. Ishola
Department of Geosciences, University of Lagos, Akoka, Lagos, Nigeria.
. Muliddin
Geological Engineering Department, Faculty of Earth Science and Technology, Haluoleo University, Kendari, Indonesia.
L. D. Safiuddin
Department of Mining Engineering, Haluoleo University, Kendari, Indonesia.
Jamhir Safani
Department of Geophysical Engineering, Haluoleo University, Kendari, Indonesia.
L. D. Nursalam
Department of Geography Education, Haluoleo University, Kendari, Indonesia.
Fathi M. Abdullah
Geology Department, Faculty of Applied Science, Taiz University, 6803 Taiz, Yemen.
U. K. Nuraddeen
Department of Geophysics Umaru Musa Yar’adua University Katsina, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
The active Multichannel Analysis of Surface Waves (MASW) technique is used for soil investigation. This technique was chosen because of its non-invasive nature. In addition, fieldwork using MASW is simpler and faster than other methods. In this study, a synthetic model was created which has representations of two synthetic models for three and four layers using physical parameters that provide an overview of the model and the corresponding density, compression wave velocity (Vp), shear wave velocity (Vs), and thickness. In addition, Vs30 is also estimated and mapped to show soil quality. Active MASW processing was adopted using the Geopsy and Dinver plug-ins. The neighbourhood algorithm (NA) implemented in the Dinver software is used to invert the Vs, Vp and thickness profiles. It also has applications as a direct search technique for global optimization. Moreover, the obtained model provides some information about the ground-to-surface investigation of the shallow depth investigation of this work.The reconstructed synthetic model shows a reasonable subsurface structure model, particularly the soil in the test model.
Keywords: Coheritability in Lentil, MASW, Lentil breeding, Vp, Vs, soil profile, synthetic model, Vs30, surface waves