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PENDUGAAN STRUKTUR BAWAH PERMUKAAN DI DAERAH BAGIAN TENGAH DAS CISADANE DENGAN MENGGUNAKAN DATA GRAVITY Suherman Dwi Nuryana; Novi Triany; Dyah Ayu Setyorini; Karyono HS; Nana Sulaksana; Emi Sukiyah
Journal of Geoscience Engineering & Energy (JOGEE) VOLUME 1, NOMOR 2, AGUSTUS 2020
Publisher : Universitas trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3153.907 KB) | DOI: 10.25105/jogee.v1i02.7685

Abstract

Daerah Aliran Sungai (DAS) Cisadane merupakan wilayah yang pembangunannya berkembang sangat pesat. Tingginya aktivitas pembangunan tersebut menjadikan pemahaman kondisi bawah permukaan aliran sungai Cisadane perlu untuk dipelajari. DAS Cisadane termasuk dalam Cekungan Jakarta bagian Barat, tersusun oleh endapan aluvium, delta dan material gunungapi serta batuan tua yang berumur Tersier. Tujuan penelitian untuk mengetahui struktur bawah permukaan yang ada di bagian tengah DAS Cisadane. Metode gaya berat digunakan untuk mengidentifikasi keberadaan struktur bawah permukaan berdasarkan kontras densitas batuannya. Analisis struktur bawah permukaan dilakukan melalui interpretasi dari peta anomali Bouguer dan anomali residual serta model dua dimensi gayaberat. Hasil penelitian mempelihatkan nilai anomali Bouguer antara 47.0 sampai 70.4 mGal. Anomali di bagian utara dan selatan relatif lebih rendah daripada bagian tengah, menunjukkan bahwa basement di bagian utara dan selatan lebih dalam dibandingkan di bagian tengah. Penampang model gayaberat dibuat dalam 3 lapisan, dengan densitas 1.9 mGal berupa sedimen kuarter, 2.2 mGal sedimen Tersier dan batuan dasar 2.67 mGal. Pola struktur bawah permukaan DAS Cisadane bagian tengah berupa sesar mendatar yang berarah baratlaut-tenggara.
EVALUASI PENGGUNAAN LAHAN DAERAH RUMPIN DAN SEKITARNYA, KAB. BOGOR, JAWA BARAT Himmes Fitra Yuda; Suherman Dwi Nuryana; Novi Triany; Eddy Sugiarto; M. Adimas Amri
JURNAL GEOGRAFI Vol 11 No 1 (2022)
Publisher : Jurusan Geografi Fakultas Ilmu Sosial Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/geografi/vol11-iss1/2697

Abstract

Rumpin sub-district is an area in the northwest part of the capital city of Jakarta which is included in the division of West Bogor Regency. The potential and resources possessed are the main reasons for the new city development plan to be carried out in the region. This study aims to provide information related to regional development planning based on environmental geology. The research method is taking geological, hydrological, disaster and current land use data as well as collecting secondary data obtained from data guardians or related agencies to support the data with the final result in the form of recommendation maps and evaluation of land use in the research area carried out by scoring. quantitatively and assessment of overlapping (overlay) SKL maps using mapping software. The results showed that the study area had a moderate-good soil bearing capacity, a poor grade of sandy soil, three classes of slopes, namely flat-sloping (0-15%), moderately steep (15-25%) and steep-very steep (> 25%). Based on the availability and productivity of aquifers, they are divided into two units, namely local, medium-production aquifers and areas of scarce groundwater. The disaster factor is soil movement from the Land Movement Vulnerability Zone Map showing that the Rumpin area is included in the Low to Medium Ground Movement. The results of the weighting of the research area are divided into three regional recommendations, namely good, medium and bad, and an evaluation of land use is carried out with the current land use map region.
PERHITUNGAN KEBUTUHAN SUMUR RESAPAN BERDASARKAN DATA GENANGAN DI KELURAHAN CILANDAK BARAT, KECAMATAN CILANDAK, KOTA JAKARTA SELATAN : AMOUNT ESTIMATION OF WELL-REQUIREMENT BASED ON INUNDATION DATA IN CILANDAK BARAT URBAN VILLAGE, CILANDAK SUB-DISTRICT, SOUTH JAKARTA CITY Astrid Fauzia; Abdurrachman Asseggaf; Novi Triany
Journal of Geoscience Engineering & Energy (JOGEE) VOLUME 4, NOMOR 1, FEBRUARI 2023
Publisher : Universitas trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jogee.v4i1.14401

Abstract

Lahan kritis akibat pembangunan secara tidak langsung dapat menyebabkan berkurangnya daerah resapan air hujan. Berkurangnya daerah resapan dapat mengakibatkan adanya daerah genangan. Daerah genangan dapat dicegah dengan pembuatan sumur resapan. Sumur resapan dibangun dengan tujuan untuk memperkecil limpasan permukaan, sehingga dapat meminimalisir daerah genangan. Lokasi penelitian terletak di Kelurahan Cilandak Barat, Kecamatan Cilandak, Kota Jakarta Selatan, Provinsi DKI Jakarta. Penelitian ini menggunakan data genangan pada tahun 2016 untuk menghitung jumlah sumur resapan yang dibutuhkan. Metode penelitian yang digunakan yaitu dengan menganalisis volume genangan sesuai dengan PERGUB DKI Jakarta No. 20 tahun 2013. Dengan luas daerah terdampak genangan sebesar 56.156,82 m2, dengan tinggi genangan sebesar 0,67 m, maka total volume genangan yang terjadi di Kelurahan Cilandak Barat sebesar 37.625,07 m3. Dengan jumlah sumur resapan maksimum (volume sumur resapan 2m3) yang dibutuhkan sebanyak 18.813 buah, dengan jumlah sumur resapan minimum (volume sumur resapan 4m3) yang dibutuhkan sebanyak 9.406 buah.
ASPEK GEOLOGI LINGKUNGAN DALAM RANGKA PEMEKARAN WILAYAH ADMINISTRASI, DALAM PEMBANGUNAN IBU KOTA KABUPATEN BOGOR BARAT Himmes Fitra Yuda; Muhammad Adimas Amri; Suherman Dwi Nuryana; Murni Sulastri; Novi Triany; Mohammad Apriniyadi; Syahadun Syahadun
JURNAL GEOGRAFI Vol 12 No 2 (2023)
Publisher : Jurusan Geografi Fakultas Ilmu Sosial Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/geografi/vol12-iss2/3570

Abstract

Disasters are events that can endanger life and disrupt people's lives. It can be caused by natural and non-natural factors, as well as those caused intentionally by humans, resulting in fatalities, property losses, natural and environmental damage, and psychological effects on disaster victims. Natural disasters themselves are a threat to the community and the Regent. The Rumpin District, Bogor Regency, as the capital of the candidate for the newly autonomous region of West Bogor Regency, has triggered population growth and the development of the area has become very fast. Deliberation of the potential and resources owned and assessed to be a strategic area because it borders the City of South Tangerang, Banten. Therefore, the activities of managing natural resources and the environment as well as regional development must pay attention to the preservation of their functions and capabilities so that development activities do not become a trigger for disasters, and the location of the development must be in an area that is safe from disasters. This study was conducted to find out how the geological conditions are related and the factors that affect the potential for landslides, and to make a map of the land movement susceptibility zone in the research area. This research uses Geographic Information System (GIS) and the parameter assessment method, where the parameters needed are geological parameters, soil type, rainfall, land use, and slope. The disaster risk zoning is expected to be a source of knowledge for the community and the city government of Bogor for disaster mitigation and increase awareness related to land movement vulnerability zones.