The Geoelectric Resistivity Methods to Determine the Presence or Position of Layers and the Aquifer Type in Transition and Inland Tropical Peatlands of Central Kalimantan, Indonesia

Yulian Taruna, Salampak Dohong, Nina Yulianti, Haiki Mart Yupi, - Kornelis, Adi Jaya, Fahrul Indrajaya

Abstract


The decreasing groundwater level (GWL) in degraded tropical peatland areas during the dry season has been one source of annual peat fire disasters in Central Kalimantan. After the severe peatland fire in 2015, Peatland Restoration Agency's strategies' peatland restoration efforts enhance peat moisture and increase the groundwater level of the hundreds of deep wells and canal blocking in the burned area of 2015. This study examines the use of geoelectric resistivity methods in determining the attachment or position of layers and types of aquifers in transition and inland tropical peatland. The research was conducted on transitional peatlands in Sidodadi Village with 19 estimate points of resistivity geoelectric, nine estimate points in the inland swamp in Taruna Jaya Village, and 18 estimate points Kalampangan Village. This research used the quantitative approach is a one-dimensional (1 D) resistivity geoelectric, which using the Schlumberger array. While the qualitative process verified the result of sequences observation with two drill wells in Sidodadi, two drill wells in Taruna Jaya, 18 hand drill wells in Kalampangan, and geological stratigraphy. The research results obtained 4 (four) layers of composition with resistivities ranging from 1.224 - 661.1 Ωm in Sidodadi, ranging from 3.37 – 7,950 Ωm in Taruna Jaya Kalampangan ranging from 5.36 - 16719 Ωm. The geoelectric data and field verification interpretation show that the soil/lithology layer consists of 4 (four) layers: peat, sand, sandy clay, and clay. The type of aquifer is an unconfined aquifer. The type of aquifer is an unconfined aquifer.

Keywords


Geoelectric resistivity; determine position; aquifer; tropical peatland.

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References


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DOI: http://dx.doi.org/10.18517/ijaseit.11.5.13241

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