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All Journal Jurnal Fisika Unand SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) KERN : Jurnal Ilmiah Teknik Sipil Jurnal Talenta Sipil Dharma: Jurnal Pengabdian Masyarakat Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Geosaintek
Aryaseta, Bagas
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Integrated 1D-2D Resistivity Inversion for Mapping Seawater Intrusion in a Coastal Aquifer:  Kenjeran-Surabaya, Indonesia Case Study Farichah, Himatul; Aryaseta, Bagas; Fatikasari, Aulia Dewi; Oktavia, Dini
Advance Sustainable Science Engineering and Technology Vol. 8 No. 1 (2026): November - January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i1.3002

Abstract

This study investigates the extent of intrusion in the Kenjeran coastal aquifer, Surabaya, Indonesia, through an integrated geophysical approach. Four one-dimensional Vertical Electrical Sounding (VES) surveys and two two-dimensional Electrical Resistivity Tomography (ERT) transects were conducted using Schlumberger and Wenner–Schlumberger configurations to obtain both depth-specific and laterally continuous resistivity data. The 1D VES results detected low-resistivity layers (<1.0 Ω·m) at depths exceeding 58–66 m, indicating deep saline groundwater. The 2D ERT sections identified wedge-shaped low-resistivity anomalies (0.1–0.8 Ω·m) at depths of 7.5 m to 48 m, indicating active intrusion progressing inland. Intrusion is more severe in the northern sector, with vertical penetration up to 48 m and horizontal encroachment beyond 200 m from the shoreline. The integration of 1D and 2D resistivity imaging proved effective in delineating saline–freshwater interfaces, enabling targeted mitigation measures and informed groundwater management to safeguard Kenjeran’s aquifer from further degradation.
Pemanfaatan komposter sebagai alat pengolah sampah rumah tangga di Desa Kedamean Gresik Aryaseta, Bagas; Puspitasari, Nia Dwi; Wibisana, Hendrata; Fatikasari, Aulia Dewi; Alfiansyah, Achmad Dzulfiqar; Farichah, Himatul; Wardhani, Primasari Cahya
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 1 (2026): February (In Progress)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i1.34484

Abstract

AbstrakDesa Kedamean merupakan salah satu desa yang berada di Kecamatan Kedamean, Kabupaten Gresik bagian selatan. Mayoritas penduduk Desa Kedamean bermata pencaharian sebagai petani dan buruh pabrik. Berdasarkan data Kementrian Lingkungan Hidup dan Kehutanan tahun 2020, di Kabupaten Gresik Provinsi Jawa Timur terdapat sekitar 41% sampah organik dari total sampah keseluruhan yang didominasi oleh sampah sisa makanan. Namun, menurut data Badan Pusat Statistik yang dikeluarkan pada tahun 2018 hanya 1,2% saja masyarakat yang mendaur ulang sampahnya. Rumah tangga menjadi salah satu penyumbang sampah terbesar di Indonesia. Jumlah rumah tangga di Desa Kedamean terhitung sebanyak 1940 yang berarti 32% dari total keseluruhan penduduk. Salah satu pemanfaataan sisa sampah organik adalah sebagai Pupuk Organik Cair (POC). Melalui alat Komposter, sampah organik rumah tangga dapat dimanfaatkan menjadi Pupuk Organik Cair (POC) melalui proses pengomposan dengan memanfaatkan tong bekas. Oleh karena itu, kegiatan pengabdian masyarakat dilaksanakan untuk memberikan edukasi serta penyuluhan kepada masyarakat Desa Kedamean tentang pengolahan sampah rumah tangga. Kegiatan ini mendapatkan respon positif dan antusias yang tinggi dari masyarakat Desa Kedamean. Melalui kegiatan ini, masyarakat Desa Kedamean memperoleh ilmu dan keterampilan baru untuk meningkatkan produktifitas. Kata kunci: Desa Kedamean; gresik; pengolahan sampah organik; komposter; pupuk organik cair. AbstractKedamean Village is one of the villages in the Kedamean District, the southern part of Gresik Regency. The majority of the residents of Kedamean Village have a livelihood as farmers and factory workers. Based on data from the Ministry of Environment and Forestry 2020, in Gresik Regency, East Java Province, there are around 41% organic waste of the total waste, which is dominated by food waste. However, according to data from the Central Statistics Agency released in 2018, only 1.2% of people recycle their waste. Households are one of the biggest waste contributors in Indonesia. The number of households in Kedamean Village is 1940, which means 32% of the total population. One of the utilizations of the remaining organic waste is as Liquid Organic Fertilizer (LOF). Through the Composter tool, household organic waste can be used as Liquid Organic Fertilizer (LOF) fertilizer through the composting process using used barrels. Therefore, community service activities are carried out to provide education and counseling to the people of Kedamean Village regarding household waste management. This activity received a positive and enthusiastic response from the people of Kedamean Village. Through this activity, the people of Kedamean Village gain new knowledge and skills to increase productivity. Keywords: Kedamean Village; gresik; organic waste processing; composter; liquid organic fertilizer.
Perubahan Garis Pantai Pesisir Pulau Merah Banyuwangi dengan Citra Satelit Landsat 8 (2016 – 2025) Nasrullah, Bima Hanggara; Wibisana, Hendrata; Aryaseta, Bagas
Jurnal Talenta Sipil Vol 9, No 1 (2026): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i1.1078

Abstract

The study of shoreline changes at Pulau Merah Beach, Banyuwangi, highlights that this coastal tourism area is highly dynamic due to the influence of ocean waves, currents, and the deposition of sand and silt. Monitoring shoreline changes is essential to ensure that the tourism area remains safe, well-managed, and sustainable. This research aims to analyze the patterns of shoreline shifts from 2016 to 2025 and to distinguish between areas experiencing continuous erosion and those affected only occasionally. The data were obtained from Landsat 8 satellite imagery, which was processed using the Normalized Difference Water Index (NDWI). Ten observation lines (transects) with a spacing of approximately 100 meters were established, and annual shoreline shifts were measured using the Euclidean Distance method. The results show that some sections of the shoreline experience continuous erosion, particularly transects 1–4, which retreated almost every year by a considerable distance. Meanwhile, transects 6–9 were eroded only at certain times and later stabilized, while transects 5 and 10 displayed mixed patterns. This study demonstrates that transect analysis combined with the Euclidean Distance method is effective in monitoring shoreline changes over time. Overall, shoreline changes at Pulau Merah are significant and uneven, requiring focused management on areas with continuous erosion, while other areas should be monitored regularly and strengthened through coastal vegetation.
Analisis Perubahan Garis Pantai di Pesisir Pantai Kabupaten Lamongan Menggunakan Data Citra Satelit Landsat 8 Effendi, Mochammad Fahreeza Yuniar; Wibisana, Hendrata; Aryaseta, Bagas
Jurnal Talenta Sipil Vol 9, No 1 (2026): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v9i1.1079

Abstract

Coastal shoreline change is a complex natural phenomenon that can cause significant impacts on coastal areas, such as land loss, infrastructure damage, and disruption of the community’s socio-economic activities. These impacts can be minimized if shoreline change monitoring is carried out periodically in vulnerable areas. Lamongan Regency, with its relatively long coastline, is an area highly susceptible to shoreline changes caused by abrasion and accretion. Therefore, research related to the dynamics occurring in this region is necessary. This study aims to identify shoreline change phenomena along the coast of Lamongan Regency during the 2016–2025 period. The method used in mapping shoreline changes involved processing Landsat 8 satellite imagery using NDWI in ArcGIS, followed by distance calculations using the Euclidean distance method and the Haversine formula, as well as conducting a statistical T-test on the results of both methods. The statistical two-sample T-test with equal variance indicated that there is no variance difference between the results obtained using the Euclidean distance method and the Haversine formula. Based on the calculation results, it was found that the greatest shoreline change due to abrasion during 2016–2025 occurred at Transect 1, specifically in Lohgung Village, Brondong District, with a change of 81.51 meters. Meanwhile, the greatest shoreline change due to accretion occurred at Transect 20, precisely in Kranji Hamlet, Paciran District, with a change of 92.00 meters.
Co-Authors Alfiansyah, Achmad Dzulfiqar Amien Widodo Billah, Zakiyah Dania Dwa Desa Warnana Effendi, Mochammad Fahreeza Yuniar Evan, Faishal Fatikasari, Aulia Dewi Fithri Estikhamah Hendrata Wibisana Nasrullah, Bima Hanggara Nia Dwi Puspitasari Oktavia, Dini Putri, Arzalia Novia Sakinah Sakinah Siti Zainab, Siti Syahrul Munir Tri Anggono Prijo, Tri Anggono Wulan, Widya Rachma Zetta Rasullia Kamandang