The Possibility of VLF Method for Measuring and Mapping Peatland

Zuhdi, Mohd. and Armanto, M Edi and PKS, A Halim and Ngudiantoro, Ngudiantoro (2017) The Possibility of VLF Method for Measuring and Mapping Peatland. In: Proceedings Book the 7th Annual Basic Science. Faculty of Science Brawijaya University, pp. 173-176. ISBN 2338-0128

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Abstract

This paper introduces a geophysical method as an alternative for peat thickness measurement. It uses electromagnetic waves of very low frequency (VLF) which is often used for subsurface mapping but has not done much to peat mapping. This method is expected to be used for measuring the thickness of the peat due to the ability of propagation of VLF waves that can penetrate the ground. Besides, its equipment is light weight, portable and without contact with the ground. Therefore, the aim is to provide an overall review on the possibility of using VLF electromagnetic wave method for thickness measurement and mapping of peat. This paper is based on desk study, exploring related literatures that shows the capability of VLF method and the related characteristic of peat and analyze the possibility to relate them. From the study, it is known that VLF electromagnetic is a high-powered radio wave of 15-30 kHz broadcasted by radio stations over the word for submarines navigation. Because of the high power and low frequency, the signal can propagate around the world and atmosphere and also penetrate the ground till a hundred meter. The signal exhibit as a primary electromagnetic field and it generates the secondary electromagnetic field from the material of the ground. The difference material of the ground -especially in terms of electrical conductivity or resistivity- will exhibit different secondary electromagnetic field. Some experiments have proved that peat and clay mineral has different electrical conductivity and resistivity. The resistivity of peat increase as organic content increase. It is above 600 Ω-meter while the dry soil is lower than 200 Ω-meter and water is between 200-600 Ω-meter. It is concluded that the VLF method possibly applied to measure the thickness and mapping peat

Type:	Book Section
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GB Physical geography
Divisions:	Fakultas Pertanian > Agroekoteknologi
Depositing User:	Zuhdi
Date Deposited:	22 Jun 2023 08:12
Last Modified:	22 Jun 2023 08:12
URI:	https://repository.unja.ac.id/id/eprint/50922

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