There is several commercial software used to make contour plot, such as Surfer 8. While those softwares provide complete and advanced features, it is not easy to operate and not providing a basic understanding on the internal work of creating contour plot. For teaching purposes, those softwares are not the best choice because of that reasons, other than the high pricing. In this research, we develop a easy to use software to make contour plot, optimized for teaching purposes so that students can see the step by step of creating contour plot using common method. The result is software that can match the Surfer 8 at 78.29% accuracy, yet easy for student to operate.
Abstrak: Metode geolistrik dapat diaplikasikan dalam berbagai bidang keilmuan termasuk lingkungan. Pada penelitian ini memanfaatkan perbedaan resistivitas untuk mengetahui aliran lindi di Tempat Pembuangan Akhir (TPA) Babakan Ciparay, dengan melihat hasil citra bawah permukaan dan diperkuat dengan analisis geokimia. Konfigurasi yang digunakan adalah Wenner dengan spasi elektroda minimum adalah 5 meter. Hasil penelitian menunjukan bahwa lindi mengalir menuju ke arah utara dan ke dataran yang lebih rendah. Hal tersebut dapat dilihat dari nilai resistivitas yang berada pada kisaran 0.019 -6.51 Ωm dan 0.9 -7,5 Ωm. Rentang resitivitas tersebut berada di bawah nilai resistivitas untuk air bersih (fresh water) yakni antara 10 -100 Ωm (Loke, 1997). Hasil tersebut diperkuat dengan hasil uji kualitas air yang dilakukan terhadap parameter kadar nitrit, nitrat, Amoniak total, Fe dan COD. Beberapa parameter kimia tersebut menunjukan bahwa untuk air yang berasal dari kawasan permukiman masih dikategosikan air bersih dan layak, akan tetapi beberapa aliran yang menuju ke wilayah tersebut sudah mengalami pencemaran lindi.Kata kunci: Geolistrik, Geokimia, Lindi, TPA, Ciparay. Abstract: Resistivity method is one of applied geopysics on enviromental issues. In this study resistivity variation and anomaly used to determine the leachate flow in the Babakan Ciparay landfill. The imaging of subsurface resistivity distribution and geochemical analysis lead to describe the area contaminated. Wenner configuration was used with the minimum electrode spacing in 5 meters. The results showed that the leachate flows to the northern part of landfill and to the lower terain.It can be seen from the value of resistivity in the range of 0. 019 -6.51 Ωm and 0.9 -7.5 Ωm. The resitivity range is below the resistivity of water (fresh water) which is between 10-100 Ωm (Loke, 1997
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