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All Journal Journal of Science Innovare Jurnal Teknik : Majalah Ilmiah Fakultas Teknik Unpak JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Karmadi, Muhammad Agus
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Medicine & Pharmacology Transportation Other

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Determination of the Groundwater Recharge Coefficient of the Upper Cisadane River - Cisadane Sub-Watershed Karmadi, Muhammad Agus
Journal of Science Innovare Vol 7, No 1 (2024): Journal of Science Innovare, Volume 07 Number 01 2024
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jsi.v7i1.10621

Abstract

Recharge groundwater naturally manifested by curved shrinkage (recession curve) elementary streams (base flow) is a very important component of the flow stream produced by the inflow through the process of rainfall infiltration into percolation and finally donated to soil water deposits.This research aims to know the quantity of groundwater Coefficient Recharge tentative Natural Cisadane River Watershed with an area of 842.69 Km², where the magnitude of the suffixes can be used as the basis for the determination of soil water uptake in the region allow question-based environment that is sustainable, so that sustainable utilization/groundwater remain sustainable.In addition the value of the coefficient of the term can also be used to indirectly set the magnitude of the numerical groundwater in surrounding watershed in the process of regionalization.The most common watershed characteristics affecting large affixes which include variable rainfall, geology, soil infiltration rates, factor flow base, and land cover.The study was carried out to obtain the estimated average value of affix using Recessive Curves (curvilinear depreciation/recession curve) of the daily discharge data for the period 1980 – 2015 acquired from Water Resources R D Center in Bandung. The average rainfall value is sought by the Isohyet method and then the value of the additive coefficient (Recharge Coefficien) can be determined, by dividing recharge value and rainfall avarage of the watershed area. The Value of the Recharge Coefficient (RC) obtained based on a calculation of 0.14 %. While based on the calculation of the benefits that occur in rock formations get the value of the Recharge Coefficient (RC) of: 742.11 x 106 m3/year. The amount of groundwater that can be released or flowed during the dry/dry season is: 172.70 x 106 m3/year, or about 98.27 %. The decline in the contribution of the suffixes in the Cisadane River Watershed can impact on the depletion of water sources during the dry season.Therefore, the need to management of water resources and integrated watershed conservation efforts and sustainable as a solution decrease the suffixes, so that quality, quantity, and continuity of water resources on a watershed Cisadane can awake.
REVIEW DAN PEMETAAN LAHAN KRITIS DALAM WILAYAH URBAN Pamungkas, Helmi Setia Ritma; Yogaswara, Laila Mardlotillah; Adhitia, Iit; Karmadi, Muhammad Agus
Jurnal Teknik | Majalah Ilmiah Fakultas Teknik UNPAK Vol 24, No 2 (2023): Jurnal Teknik : Majalah Ilmiah Fakultas Teknik UNPAK
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/teknik.v24i02.9396

Abstract

Kota Bogor merupakan salah satu wilayah urban penyangga atau pinggiran kota megapolitan yang terdekat dengan Jakarta yang memiliki keterbatasan ruang. Dampak dari pemanfaatan ruang yang tidak sesuai akan mengakibatkan degradasi lingkungan apalagi lahan dengan kemiringan lereng dari curam sampai sangat curam dimanfaatkan untuk permukiman. Kepadatan penduduk sangat tinggi tentu saja akan menyebabkan ruang-ruang sempadan jalan, sungai, dan situ menjadi ruang terbuka hijau dan biru semakin sulit direalisasikan karena alih fungsi lahan menjadi kawasan terbangun di Kota Bogor terutama di Kecamatan Bogor Timur. Penelitian ini bertujuan untuk mereview dan pemetaan lahan kritis Bogor Timur dengan menggunakan metode tumpang susun berdasarkan Peraturan Menteri Kehutanan Nomor. P.32/Menhut-II/2009. Hasil review dan pemetaan data lahan kritis menunjukkan bahwa Kecamatan Bogor Timur pada tahun 2015, kategori lahan kritis pada Kawasan budidaya pertanian seluas 98,21 ha, kemudian pada tahun 2022 menjadi 37,79 ha. Kategori agak kritis juga menjadi menurun signifikan dari 111,2 ha menjadi 36,59 ha. Kawasan lindung di luar Kawasan hutan memiliki kategori agak kritis seluas 3,2 ha, kritis 3,2 ha, dan sangat kritis 7,99 ha. Akan tetapi pada tahun 2022 dengan banyak sekali perubahan kondisi tutupan lahan maka lahan kritis pada tahun 2022 dengan kategori agak kritis menjadi meningkat menjadi 25,74 ha, kritis menjadi 28,78 ha, dan sangat kritis menjadi 10,77 ha. Lahan-lahan yang tadinya tidak kritis menjadi potensial kritis sebesar 30,53 ha. Kata kunci : Review, Lahan Kritis, Wilayah Urban
PENILAIAN KUANTITATIF UNTUK TUJUAN GEOWISATA DI DAERAH BAYAH DAN SEKITARNYA Karmadi, Muhammad Agus; Adhitia, Iit; Solihin, Solihin
Jurnal Teknik | Majalah Ilmiah Fakultas Teknik UNPAK Vol 24, No 2 (2023): Jurnal Teknik : Majalah Ilmiah Fakultas Teknik UNPAK
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/teknik.v24i02.9456

Abstract

ABSTRAK Daerah Bayah dan sekitarnya memiliki kawasan geowisata yang sangat menarik untuk dijadikan sebagai kawasan wisata pendidikan atau wisata lanskap. Penilaian prospek geowisata yang dilakukan di kawasan tersebut menemukan beberapa situs yang menarik untuk digunakan sebagai lokasi wisata dengan menganalisis berbagai sudut pandang menitikberatkan pada nilai ilmiah dan intrinsik, edukasi, ekonomi, konservasi dan nilai tambah dari situs geologi dan geomorfologi. Pada kajian ini ada 10 situs geologi dan geomorfologi yaitu Bukit Teletabis, Curug Kanteh, Goa Lauk, Pantai Tanjung Layar, Goa Langir, Pantai Karang Bokor, Pantai Pulo Manuk, Pantai Karang Taraje, Batu Masigit, dan Pedataran Kampung Sawah, yang mempunyai penilaian kelayakan kuantitatif masing-masing 55.67%, 59.83%, 56.17%, 72.00%, 59.50%, 65.00%, 70.00%, 65.00%, 27.00%, dan 36.67%. Situs Pantai Tanjung Layar, dan Pantai Pulo Manuk dapat digunakan sebagai objek wisata, untuk situs Pantai Karang Bokor, Pantai Karang Taraje, Curug Kanteh, Goa Langir, Goa Lauk, dan Bukit Teletabis kelayakannya perlu ditingkatkan lebih lanjut, sedangkan Pedataran Kampung Sawah dan Batu Masigit tidak layak saat sekarang. Perlu adanya peningkatan kelayakan pembangunan sarana dan prasarana penunjang pariwisata di daerah tujuan wisata untuk menciptakan kenyamanan wisatawan. Kata Kunci : bayah, geowisata, situs geologi, situs geomorfologi, kelayakan kuantitatif ABSTRACT The Bayah area and its surroundings have a very interesting geotourism area to be used as an educational or landscape tourism area. The geotourism prospect assessment carried out in the area found several interesting sites to be used as tourist locations by analyzing various points of view emphasizing the scientific and intrinsic, educational, economic, conservation and added value of geosites and geomorphosites. In this research, there are 10 geosites and geomorphosites, namely Teletabis Hill, Kanteh Waterfall, Lauk Cave, Tanjung Layar Beach, Langir Cave, Karang Bokor Beach, Pulo Manuk Beach, Karang Taraje Beach, Batu Masigit, and Pedataran Kampung Sawah, which have a feasibility assessment quantitative respectively 55.67%, 59.83%, 56.17%, 72.00%, 59.50%, 65.00%, 70.00%, 65.00%, 27.00%, and 36.67%. The Tanjung Layar Beach and Pulo Manuk Beach sites can be used as tourist attractions, for the Karang Bokor Beach, Karang Taraje Beach, Kanteh Waterfall, Langir Cave, Lauk Cave and Teletabis Hill sites their feasibility needs to be further improved, while the Pedataran Kampung Sawah and Batu Masigit not worth it now. There is a need to increase the feasibility of developing tourism supporting facilities and infrastructure in tourist destination areas to create tourist comfort. Keywords: bayah, geotourism, geosite, geomorphosite, quantitative assessment
PENDAMPINGAN TEKNIS MASYARAKAT DESA SIRNAJAYA DALAM MENGHADAPI RISIKO BENCANA TANAH LONGSOR Kamardi, Muhammad Agus; Adhitia, Iit; Prakoso, Wahyu Gendam; Marwanza, Irfan; Karmadi, Muhammad Agus; Hadi, Singgih Irianto Trisilo; Solihin
Jurnal Abdi Masyarakat Indonesia (JAMIN) Vol 5 No 1 (2023): JURNAL ABDI MASYARAKAT INDONESIA (JAMIN)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jamin.v5i1.16047

Abstract

The hilly area around Situ Rawa Gede is located in Sirnajaya Village, Sukamakmur District, Bogor Regency, with the existence of Situ Rawa Gede surrounded by hills extending from the south to the northwest. Landform changes are increasingly visible in the hilly areas around Situ Rawa Gede due to community gardening activities and coffee agro-tourism, and the opening of settlements causes topsoil to peel off, which is detrimental to the physical condition of the soil, can cause erosion and trigger mass movement of soil/rock. It is necessary to arrange land in the hilly area around Situ Rawa Gede to be appropriately organized. A zoning map of the vulnerability of ground motion is needed; from this map, it can be seen which areas have low to high soil vulnerability. Land management is one of them by making terracing which helps increase water infiltration into the soil and limiting surface runoff to minimize the risk of surface water erosion. This PkM activity provides a technical description of the concept of making a soil movement vulnerability zoning map to the community so that they understand the importance of maps of low to high soil vulnerability zones in their area in disaster mitigation efforts and through technical assistance related to the application of bench terraces and garden terraces so that they can be planted with plantation crops as ground cover is also for the safety of the community and visitors to coffee agro-tourism.
Co-Authors Adhitia, Iit Hadi, Singgih Irianto Trisilo Helmi Setia Ritma Pamungkas Irfan Marwanza Kamardi, Muhammad Agus Laila Mardlotillah Yogaswara, Laila Mardlotillah Solihin Solihin Solihin Wahyu Gendam Prakoso, Wahyu Gendam