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Karakteristik Hidrogeokimia Akuifer Tak Terkekang Kawasan Pesisir Pulau Weh, Aceh Wisnu Arya Gemilang; Nia Naelul Hasanah; Ulung Jantama Jantama Wish
JURNAL SUMBER DAYA AIR Vol 15, No 1 (2019)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1238.139 KB) | DOI: 10.32679/jsda.v15i1.481

Abstract

Pengembangan pariwisata di kawasan pesisir Pulau Weh, Aceh membutuhkan beberapa pendukung untuk meningkatkan jumlah kunjungan wisatawan. Salah satu pendukung pariwisata meliputi tersedianya prasarana pariwisata, diantaranya peningkatan kebutuhan air bersih. Evaluasi terhadap kualitas airtanah yang ada di kawasan pesisir sangat penting dilakukan untuk mengetahui kelayakan airtanah. Interpretasi terhadap parameter kimia airtanah merupakan salah satu metode evaluasi kualitas dan karakteristik airtanah yang digabungkan dengan faktor geologi sehingga dapat diketahui karakteristik hidrogeokimia airtanah. Fasies airtanah pesisir Pulau Weh terbagi atas 5 tipe meliputi CaHCO3, CaCl, NaCl, NaHCO3 dan percampuran CaMgCl. Faktor pelapukan batuan merupakan faktor utama penentu tipe fasies airtanah di Pulau Weh. Sebanyak 54,55% sampel airtanah di pesisir Pulau Weh terindikasi telah dipengaruhi oleh airlaut ke dalam akuifer. Jarak sumur gali <1km dari garis pantai serta padatnya penduduk diinterpretasikan menjadi salah satu faktor pemicu terjadinya masukan air laut ke dalam akuifer.Seluruh sampel airtanah di Pulau Weh memenuhi persyaratan untuk dikonsumsi maupun digunakan.
The Mechanisms of Coastal Erosion in Northeast Bali Semeidi Husrin; Roka Pratama; Aprizon Putra; Hadi Sofyan; Nia Naelul Hasanah; Nita Yuanita; Irwan Meilano
Jurnal Segara Vol 12, No 2 (2016): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2159.913 KB) | DOI: 10.15578/segara.v12i2.7681

Abstract

Marine tourism sector in the Northeast Bali, Indonesia, experienced rapid development in the last decades. However, severe coastal erosion in some parts of the area has threaten the industry. Unsuccessful mitigation measures have been carried out by authorities by constructing seawalls along the coastline. The objective of the study is to understand the physical processes related to coastal erosion in the area and to assess the effectiveness of seawall along the coastline. To achieve the objectives, a GIS approach was carried out to investigate general changes of the coastline since 1944 until 2013. Hydrodynamics analyses and sediment transport simulations were also conducted and validated by the data from field measurements. The role of Mount Agung (a volcanic mountain) to the coastal dynamic system was also investigated. Moreover, the data from cGPS measurements in the island were also used for the analysis of possible land subsidence in the area. From social aspects, the history of USAT Liberty Shipwreck in Tulamben Village supports the analyses and provides information on the evolution of coastline in the area. We conclude that coastal erosion in North-east Bali has long been occurred and strongly affected by the dynamics of hydro-oceanography, volcanic activities, geological dynamics, and human interferences. Finally, the mechanism of coastal erosion in the area was also proposed.