Identifikasi intrusi air laut pada air tanah menggunakan Metode Resistivitas 2D di Daerah Surabaya Timur

Wardhana, Rizky Rahmadi (2017) Identifikasi intrusi air laut pada air tanah menggunakan Metode Resistivitas 2D di Daerah Surabaya Timur. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kawasan Surabaya Timur telah mengalami intrusi air laut dan berdampak pada akuifer air tanah sehingga memiliki kualitas air dengan adanya kadar garam yang terdapat pada sumur penduduk sekitar. Masalah adanya dugaan intrusi air laut ini telah diidentifikasi dengan menggunakan metode geolistrik dengan menggunakan konfigurasi wenner-schlumberger yang terletak di kawasan Surabaya Timur yang bertujuan untuk mengidentifikasi adanya intrusi air laut. Pengambilan data telah dilakukan pada kawasan Surabaya Timur saja. Data sumur juga dilakukan pengambilan sampel untuk mendapatkan hasil parameter air berupa elevasi muka air tanah, Salinitas, TDS, pH, dan Konduktivitas. Akuisisi data geolistrik dilakukan pada 3 titik lokasi yaitu Sutorejo, Klampis, dan ITS dengan menggunakan metode Resistivitas 2D dan Induced Polarization. Tahapan dari pengolahan data menggunakan perangkat lunak Res2Dinv. Berdasarkan hasil interpretasi pada daerah peneltian Sutorejo, pada kedalaman 0.6-3,5 meter atau pada perlapisan paling atas diduga terjadi intrusi air laut dengan nilai resistivitas 0.734-6.31 ohm.m yang terdapat pada bagian tengah hingga Timur Laut. Dugaan ini juga didukung dari hasil penelitian dari metode Induced Polarization yang menujukkan nilai 0.202 msec pada kedalaman 0.6-3.5 meter. ====================================================================================== East part of Surabaya City had seawater intrution and had impact for ground water aquifer, then for those reason, Surabaya has bad quality of groundwater that contains unusual salinity. To investigate this cases, researcher use Electrical Resisitivity Method with Wenner-Schlumberger configuration to indicate salinity trouble in East Surabaya. Observation data have been collected with some parameters, such as ground water level, salinity, pH, TDS (Total Dissolve Solid), and conductivity. Acquisition in this research took in 3 places, those places located in Sutorejo, Klampis and ITS Campus with 2D Resistivity Method and Inducted Polarization. Step for processing data in it are using RES2DINV software. From interpretation section in Sutorejo case, at depth of 0.6-3.5m or the upper layer is expected for seawater intrusion with resisitivity range from 0.734 – 6.32 Ohm.m at middle part to northeast part of resisitivity section. This interpretation are also supported by the results of research from the Induced Polarization method that showed the value of 0.202 msec at a depth of 0.6-3.5 meters.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Intrusi Air Laut; Resistivitas; Induced Polarization; Akuifer; Surabaya Timur; Sea Water Intrusion; Resistivity; IP; Aquifer; East Surabaya
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
G Geography. Anthropology. Recreation > GE Environmental Sciences
Q Science > QE Geology > QE601 Geology, Structural
T Technology > TA Engineering (General). Civil engineering (General) > TA1637 Image processing--Digital techniques
Divisions: Faculty of Civil Engineering and Planning > Geophysics Engineering > (S1) Undergraduate Theses
Depositing User: RIZKY RAHMADI WARDHANA
Date Deposited: 13 Mar 2017 02:02
Last Modified: 08 Mar 2019 04:22
URI: http://repository.its.ac.id/id/eprint/3607

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