Identifikasi Liang Bawah Permukaan Berdasarkan Nilai Tahanan Jenis di Gua Batu Tunggal Desa Tegalrejo Kotabaru

Abstract

The location of subsurface burrows has been identified based on the value of resistance in Batu Tunggal Cave in Tegalrejo Village, Kotabaru Regency. The research location was coordinated by 3 o 11 '41.8 "S and 115 o 58' 32.9" E located in karst rocks covering an area of 1,777,630 km 2 . Karst is the result of the process of dissolving carbonate rocks originating from the ocean which are lifted to the surface by endogenous forces. The method used is the Wenner Configuration Geoelectric with a space of 5 meters and up to layer 6. The length of each track is 200, 130 and 200 meters. The results of measurements of Line 1 were found in three cave burrows which were composed of clay and sand with resistivity value of 1.16–8.99 Ω.m. The burrow is buried at a depth of 17.3 meters and each has an area of 237; 66 and 55 m 2 . Line 2 is found in one cave hole which is composed of clay and sand with a resistance value of 3.16–14.10 Ω.m. The burrow was buried at a depth of 17.3 meters and had an area of 114 m 2 . Line 3 is found in one cave hole composed of clay and sand with a resistance value of 1.08–4.01 Ω.m. The burrow was buried at a depth of 17.3 meters and had an area of 24,375 m 2 . Among the three cave burrows are thought to be connected to one another.