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PEMODELAN BANJIR ROB PADA BULAN DESEMBER 2021 DI WILAYAH PESISIR MATARAM, NUSA TENGGARA BARAT MENGGUNAKAN DELFT3D (23dos334)

ILYAS, RIYANTI MAHARANI (2023) PEMODELAN BANJIR ROB PADA BULAN DESEMBER 2021 DI WILAYAH PESISIR MATARAM, NUSA TENGGARA BARAT MENGGUNAKAN DELFT3D (23dos334). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK

(Riyanti Maharani Ilyas. 26050119120014. Pemodelan Banjir ROB Pada Bulan Desember 2021 Di Wilayah Pesisir Mataram, Nusa Tenggara Barat Menggunakan Delft3D. Aris Ismanto dan Elis Indrayanti)

Bencana banjir, menjadi salah satu bencana yang kini cukup sering melanda di berbagai kawasan di Indonesia terutama di wilayah Pesisir laut dan wilayah sekitar sungai. Salah satu bencana yang kerap terjadi ialah kenaikan muka air laut ke wilayah pesisir laut (banjir rob). Salah satu wilayah terdampak adalah wilayah pesisir bagian barat Pulau Lombok, Nusa Tenggara Barat, khususnya di sekitar pesisir pantai Desa Bagik Kembar. Tanjung Karang. Banjir rob melanda kawasan pesisir pantai Desa Bagik Kembar pada tanggal 4-8 Desember 2021. Pemodelan dilakukan untuk mengidentifikasi area yang terdampak dan pengaruh pasang surut terhadap fenomena banjir tersebut. Pemodelan dilakukan menggunakan software open source Delft3D dengan menggunakan batas konstanta pasang surut, angin, dan gelombang sebagai inputan data pembangunnya. Hasil model menunjukkan adanya kenaikan elevasi muka air laut pada 4 titik observasi yang berada di darat dengan ketinggian berkisar 0.04-0.69 m setiap pasang di setiap tanggal kejadian. Hasil model lainnya berupa grafik elevasi muka air laut, hasil menunjukkan kesesuaian yang yang cukup baik dengan data elevasi pasang surut di lapangan yang diperoleh dari Badan Informasi Geospasial (BIG), nilai verifikasi sebagai validasi RMSE didapatkan 0.1080.

Kata Kunci : banjir rob, Delft3D, pasang surut, pemodelan, Lombok.

ABSTRACT

(Riyanti Maharani Ilyas. 26050119120014. ROB Flood Modeling in December 2021 in the Coastal Area of Mataram, West Nusa Tenggara Using Delft3D. (Aris Ismanto and Elis Indrayanti)

Flooding is one of the disasters that is now quite frequent in various regions in Indonesia, especially in coastal areas and areas around rivers. One of the disasters that often occurs is the rise of sea level to the coastal area (tidal flood). One of the affected areas is the western coastal area of Lombok Island, West Nusa Tenggara, especially around the coast of Bagik Kembar Village. Tanjung Karang. Tidal floods hit the coastal area of Bagik Kembar Village on December 4-8, 2021. Modeling was carried out to identify the affected areas and the influence of tides on the flood phenomenon. Modeling was carried out using Delft3D open source software using tidal, wind, and wave constant limits as inputs for the construction data. The model results showed an increase in sea level elevation at 4 observation points located on land with heights ranging from 0.04-0.69 m per tide on each event date. Other model results in the form of sea level elevation graphs, the results show a fairly good agreement with the tidal elevation data in the field obtained from the Geospatial Information Agency (BIG), the verification value as RMSE validation obtained 0.1080.

Keywords : tidal flood, Delft3D, tidal, modeling, Lombok.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: banjir rob, Delft3D, pasang surut, pemodelan, Lombok, tidal flood, Delft3D, tidal, modeling.
Subjects: Fisheries And Marine Sciences
Divisions: Faculty of Fisheries and Marine Sciences > Department of Oceanography
Depositing User: pancasila wati
Date Deposited: 30 Apr 2024 07:21
Last Modified: 30 Apr 2024 07:21
URI: https://eprints2.undip.ac.id/id/eprint/20347

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