DELINEASI CEKUNGAN AIR TANAH BANDAR LAMPUNG SEBAGAI LANDASAN KONSERVASI UNTUK MENJAGA KETERSEDIAAN SECARA BERKELANJUTAN

Rustadi Rustadi, Arief I. H Arief I. H, Ahmad Z. Ahmad Z., Nandi Haerudin, Suharno Suharno

Abstract


Pertambahan populasi di Bandar Lampung telah berdampak pada alih fungsi ruang terbuka hijau dan meningkatnya ekstraksi air tanah untuk kebutuhan air baku. Ketidak seimbangan antara supply dan demand, tepah menyebabkan permasalahan lingkungan terjadinya intrusi di pesisir dan rawan krisis airtanah di musim kemarau. Tata kelola dan kebijakan untuk menjaga kesinambungan air tanah di daerah penelitian, perlu pemahaman keberadaan cekungan. Delineasi cekungan air tanah dilakukan melalui survey gayaberat terbatas dan terdistribusi
secara random. Anomali Bouguer rendah ditafsirkan sebagai zona cekungan air tanah berarah barat daya-timur laut diapit oleh tinggian batuan dasar di barat laut dan timur – timurdaya. Cekungan Bandar Lampung terbentuk oleh grabben batuan dasar, memiliki dimensi panjang 8 km dan ketebalan lapisan sedimen 200 m. Struktur berarah barattimur menjadi interkoneksi zona resapan Gunung Betung dan cekungan. Struktur membantu mengalirkan infiltrasi di zona resapan dan mengisi cekungan Bandar Lampung.


Keywords


air tanah; Bandar Lampung; gaya berat

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DOI: https://doi.org/10.31284/j.semitan.2020.978

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