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All Journal Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian JCES (Journal of Character Education Society) Jambura Geo Education Journal International Journal of Hydrological and Environmental for Sustainability
Pratiwi, Elok Surya
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences Other

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Penerapan Model Statistik Multivariat dalam Studi Kerawanan Longsorlahan di Daerah Aliran Sungai Kodil, Jawa Tengah Pratiwi, Elok Surya; Hadmoko, Danang Sri
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 16, No 1 (2019): January
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v16i1.4961

Abstract

Tingginya jumlah kerugian yang ditimbulkan dari bencana longsorlahan di DAS Kodil Jawa Tengah membuktikan bahwa upaya manajemen bencana di daerah tersebut masih lemah. Penelitian ini dilakukan sebagai salah satu upaya mengurangi resiko bencana yakni dengan cara merekonstruksi peta kerawanan longsorlahan. Peta kerawanan longsorlahan direkonstruksi menggunakan salah satu metode indirect mapping untuk mengurangi tingkat subjektivitas yang tinggi  yakni metode Logistic Regression Model. Hasil peta kerawanan longsorlahan DAS Kodil menunjukkan bahwa 11,9% luas area termasuk dalam kategori daerah kerawanan tinggi dan 5,8% luas area termasuk dalam kategori daerah kerawanan sangat tinggi. Tingkat akurasi peta kerawanan longsorlahan yang dihasilkan adalah sebesar 69,5%, dimana variabel yang paling berpengaruh terhadap kejadian longsorlahan di daerah penelitian adalah jarak buffer jalan.High numbers of loss from the previous landslide hazard proved that hazard management in Kodil Watershed Central of Java was still low. One of the way to decrease the hazard risk occurrence are with analyzing dynamic of landslide distribution observed from building landslide susceptibility map. Landslide susceptibility map was built using one of indirect method that is Logistic Regression Model (LRM) to reduce the subjectivity result. The result of landslide susceptibility map reveals that 11,9% of area in Kodil Watershed have high susceptibility rate, even more 5,8% area have very high susceptibility rate. Landslide susceptibility map built by LRM reached an accuracy as high as 69,5%, where variable distance from road performs as the biggest influence for landslide occurrence in that area.
ASSISTANCE OF DISASTER PREPAREDNESS VILLAGE THROUGH LANDSLIDE DISASTER EDUCATION Setyowati, Dewi Liesnoor; Juhadi, Juhadi; Pratiwi, Elok Surya; Papa Yohanes, Kristi Dese Imanuel Adi; Rahma, Ainayya
JCES (Journal of Character Education Society) Vol 4, No 3 (2021): Juli
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jces.v4i3.4900

Abstract

Abstrak: Badan Penanggulangan Bencana Daerah (BPBD) Kota Semarang menetapkan sebanyak 22 Kelurahan Siaga Bencana (KSB). Wilayah ini ditetapkan sebagai kelurahan rawan bencana longsor. Masyarakat di KSB perlu pendampingan dalam upaya mitigasi bencana, karena ketidakpedulian terhadap bencana. Bencana dianggap biasa dan belum tentu terjadi, untuk itulah diperlukan peningkatan pengetahuan, sikap, maupun perilaku peduli pada bencana. Tujuan umum kegiatan adalah melakukan pendampingan KSB wilayah rawan longsor dalam upaya mitigasi bencana. Tujuan khusus kegiatan adalah melakukan: 1) pendampingan penguatan kapasitas KSB supaya memiliki kesadaran dan kepedulian terhadap bencana, 2) kegiatan pelatihan mitigasi bencana di Laboratorium Pendidikan Bencana Jurusan Geografi FIS UNNES. Solusi yang ditawarkan Perguruan Tinggi untuk mengatasi permasalahan di atas adalah: 1) melakukan transfer pengetahuan dengan menyelenggarakan pelatihan dan simulasi bencana longsor untuk pendampingan, pembinaan, dan penguatan kapasitas KSB supaya memiliki sikap peduli bencana, 2) melakukan pendampingan KSB supaya mampu berinovasi dan berkreasi dalam kegiatan siaga bencana longsor 3) mengimplementasi kemampuan KSB dalam menyusun program kegiatan kesiapsiagaan menghadapi bencana longsor. Hasil kegiatan pengabdian kepada masyarakat berupa: modul pelatihan edukasi bencana longsor, penguatan kapasitas KSB dalam hal pengetahuan, sikap dan perilaku peduli bencana, strategi inovasi kegiatan KSB peduli bencana, pendampingan dalam pelatihan simulasi bencana longsor.Abstract: The Regional Disaster Management Agency (BPBD) of Semarang city has designated as many as 22 Disaster Preparedness Villages (KSB). This area is designated as a landslide-prone village. People in KSB need assistance in disaster mitigation efforts, because of indifference to disasters. Disasters are considered common and do not necessarily occur, therefore it is necessary to increase knowledge, attitudes, and behaviors to care for disasters. The general purpose of the activity is to assist KSB landslide-prone areas in disaster mitigation efforts. The special purpose of the activity is to conduct: 1) assistance in strengthening the capacity of KSB to have awareness and concern for disasters, 2) disaster mitigation training activities in the Disaster Education Laboratory of the Department of Geography FIS UNNES. The solutions offered by universities to overcome the above problems are: 1) conduct knowledge transfer by organizing training and simulation of landslide disasters for mentoring, coaching, and strengthening the capacity of KSB to have a disaster care attitude, 2) conducting KSB assistance to be able to innovate and create in landslide disaster preparedness activities 3) implement KSB's ability to develop disaster preparedness programs. The results of community service activities in the form of training modules on landslide disaster education, strengthening the capacity of KSB in terms of knowledge, attitudes, and behaviors of disaster care, innovation strategies of KSB disaster care activities, assistance in landslide simulation training.
Identification of Seawater Intrusion Using Geoelectrical Method with Wenner-Schulumberger Configuration: A Case Study in Southern Tolonuo Island, North Halmahera Regency, Indonesia Kalilu, Nikodemus; Sadjab, Bayu Achil; Yusniar, Masitah; Kurnia, Kurnia; Pratiwi, Elok Surya
International Journal of Hydrological and Environmental for Sustainability Vol. 1 No. 2 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1538.127 KB) | DOI: 10.58524/ijhes.v1i2.112

Abstract

Research on seawater intrusion has been carried out on the southern Tolonuo island, Tobelo sub-district, North Halmahera Regency, Indonesia using the Wenner-Schlumberger configuration resistivity geoelectric method supported by the Naniura NRD 300 HF tool, this study aims to determine the distribution pattern of seawater intrusion and to determine the resistivity value of each subsurface rock layer in the study area. The measurement results are processed using the RES2DINV software to obtain a 2-D pseudo resistivity section that describes the distribution value of the layer that the soil surface is shown in color images. The measurement results on line 1 show that there is seawater intrusion with a resistivity value range of 0.338 m - 2.44 m which is at 4 – 20 meters with a certain pattern, line 2 also has sea water intrusion at a depth of 5 m – 20 m with a resistivity value of 1.31 Ωm – 6.50 Ωm. On line 3, it is clear that there is a good correlation between the intersection of line 1 and line 2, where there is a low resistivity contrast on the line 1 with a stretch of 35 m – 50 m at a depth of 10 m – 20 m and the line 2 with a span of 80 m - 100 m at a depth of 10 m - 20 m. The distribution pattern of seawater intrusion from the south to the north of Tolonou Village with a wide range of up to 200 meters from residential areas from the shoreline. The research area has layers of clay rock with a resistivity value between 30 – 80 Ωm, and breccia rocks around it with a resistivity value of 100 – 200 Ωm. On the other hand, between clay and breccia there is impermeable rock which is thought to be conglomerate rock with a resistivity value of 200-500 Ωm, besides that in the study area there is also a layer suspected to be a groundwater aquifer layer with a resistivity value (ρ) < 10 m.
Identification of Groundwater Aquifers Using Geoelectric Methods with Schlumberger Configuration in Peatland Areas, West Kalimantan, Indonesia Rasmi, Rasmi; Sutanto, Yuris; Perdhana, Radhitya; Muliadi, Muliadi; Muhardi, Muhardi; Marbun, Mahmuddin; Machmud, Amir; Pratiwi, Elok Surya
International Journal of Hydrological and Environmental for Sustainability Vol. 3 No. 1 (2024): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v3i1.388

Abstract

The geoelectric-resistivity method with Schlumberger configuration is commonly used for groundwater exploration. This method helps identify changes in the resistivity of rock layers beneath the Earth's surface by flowing direct current (DC). In this research, geoelectric-resistivity was used to search for the existence of groundwater aquifers in water crisis areas with peat soil structures. In addition, this research aims to determine the depth of the aquifer layer based on resistivity values below the surface and  to identify variations in resistivity values below the surface. The method used in this research was the Schlumberger configuration resistivity geoelectric method with 4 measurement points, each with  a stretch length of 500 m . The research results show that the subsurface resistivity value in the Parit Haji Muksin II area is 2.69 Ohm m to 264 Ohm m. The unconfined aquifer at the research location was found at point 1 and point 2 at a depth of 3.94 m to 35.5 m, while the confined aquifer was found at points 3 and 4 at a depth of 13.6 m to 61.8 m. This study indicates the presence of potential groundwater resources in tropical peatlands, highlighting the necessity for further comprehensive research to ensure their sustainable utilization in the future.
Threat Existence to Limestone Formations Around Goa Peteng in South Bali Island, Indonesia Suryana, I Gede Putu Eka; Atmaja, Dewa Made; Pratiwi, Elok Surya; Budiarta, I Gede; Bharata, Ida Bagus Arya Yoga; Wulandari, Ni Ketut Catur; Wulandari, Ni Nyoman Tri
JAMBURA GEO EDUCATION JOURNAL Volume 5, Issue 1 (2024): Jambura Geo Education Journal (JGEJ)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgej.v5i1.24417

Abstract

The limestone formations are a unit of geological rock formations that are important for the formation of unique Karst Landscapes but are often threatened by development interests, one of which is in the environment around Goa Peteng, whose existence is threatened. This research aims to investigate: 1) the conditions of limestone formations  around Goa Peteng, 2) identified threats to the existence of limestone formations  around Goa Peteng, and 3) potential opportunities for protecting the existence of limestone formations  around Goa Peteng. The methods used in this research include field observation, literature review, and assistance with map digitization. This assistance involves utilizing literature studies, both scientific articles and reports containing maps that also cover the study location. The results of the research show that the limestone formations in the Goa Peteng environment exist at of a level of karst development in the Goa Peteng environment which is Mesokarst and parts of the surrounding area are Non-Karst apart from that there is Exokarst Potential and Endokarst though not much exists at the study location. The real threat to the existence of the karst landscape in the Goa Peteng environment is the development of mass tourism in the form of tourist accommodation such as hotels and villas, which has developed rapidly over the last 14 years, as seen from Satellite Image data. The limestone formations in the Goa Peteng environment themselves has the opportunity to be a place for education and further studies need to be carried out on the limestone formations and karst development in South Bali
Co-Authors Amir Machmud, Amir Bayu A. Sadjab Bharata, Ida Bagus Arya Yoga Danang Sri Hadmoko Dewa Made Atmaja Dewi Liesnoor Setyowati I Gede Budiarta Juhadi Juhadi Kalilu, Nikodemus KURNIA KURNIA, KURNIA Mahmuddin Marbun Muhardi Muliadi Papa Yohanes, Kristi Dese Imanuel Adi Perdhana, Radhitya Rahma, Ainayya Rasmi Rasmi, Rasmi Suryana, I Gede Putu Eka Wulandari, Ni Ketut Catur Wulandari, Ni Nyoman Tri Yuris Sutanto Yusniar, Masitah