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All Journal Journals Mining Engineering : Bina Tambang Journal of Degraded and Mining Lands Management Sumatra Journal of Disaster, Geography and Geography Education Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Mining Journal Jurnal Teknologi Informasi dan Pendidikan Science and Environmental Journals for Postgraduate Teknomekanik Gudang Jurnal Multidisiplin Ilmu Indonesian Mining Journal Menulis: Jurnal Penelitian Nusantara
Mulya Gusman
Universitas Negeri Padang
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Journal : Teknomekanik

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Spatial modelling of shallow groundwater quality in coastal areas with Kriging interpolation Arbi, Yaumal; Syah, Nurhasan; Umar, Iswandi; Dewata, Indang; Gusman, Mulya; Sandra, Nevy
Teknomekanik Vol. 9 No. 1 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v9i1.47272

Abstract

This study maps shallow coastal groundwater quality in Padang, Indonesia, using four operational parameters: potential of hydrogen (pH), electrical conductivity (EC), total dissolved solids (TDS), and salinity. We characterize spatial dependence using empirical variograms, evaluate directional anisotropy, and generate prediction surfaces with Ordinary Kriging. The variogram analysis indicates stronger spatial continuity along the coastline for EC and TDS, while salinity shows shorter continuity with a distinct directional structure, reflecting localized freshwater-seawater mixing processes. Groundwater pH remains neutral to slightly alkaline and exhibits lower spatial variability than EC, TDS, and salinity. Leave-one-out cross-validation supports the reliability of the kriging estimates at the study scale, indicating low prediction error and strong agreement between observed and predicted values. The resulting thematic maps enable a three-level quality zoning that differentiates a lower-risk northern segment, a transitional central belt, and a higher-risk southern segment consistent with seawater intrusion influence. These outputs provide a practical basis for prioritizing monitoring locations, protecting vulnerable wells, and strengthening evidence-based coastal groundwater management aligned with SDG 6 Clean Water and Sanitation and SDG 11 Sustainable Cities and Communities.
Co-Authors A., Riam Marlina Abdul Razak Adree Octova Afaz, Triyanchy Afkar Afkar Afrinal Afrinal Agung Pujangga Ahmad Ikhsan Ainil Khalisah Aldi Fajri Ali Amran Ali Amran Alifa Alifa Andree Octova Ansosry Ansosry Aprizon Putra Arif Maulana Hadi Audia Multriwahyuni Bambang Heriyadi Baron, Adhitya Bram Subhan Maulana Catri, Indra Dedi Yulhendra Dimas Tidar Febrian Dita Aprilia Istiqamah Eri Barlian Fadel Muhammad Fadhilla Oktari Fariq Dwi Satria Diansa Fathonie Yurnia H Febrian, Febrian Fellya Septia Fauzi Femi Audya Syifa Fitri Sadilla Fitrya Monica Gus Permata Sari, Indri Hafizurahman Dwi Saputra Harmedi Yulian Saputra Heldi Heldi Heldi, Heldi Herfien Heri Prabowo Ika Desmawita Ilahi Putri, Winda Amanah Ilham Muhammad Agung ilham siddiq Ilhami Putra Indang Dewata Intan Juita Intan Maharani Besri Iskandar Iskandar Iswandi U iswandi U Jeffrey Leonardi Nurkamal Jefri Julianda Putra Jevindo Ornandi Gemvita Khairunnas Khairunnas khazana tulistra M Asy Ruseffandi Mai Ridho Purnomo Putra Marisa Meliana Fitri Mery Delvina Monalisa Monalisa Muhamad Sholichin Muhammad Abbil Raihan Muhammad Hazwafi Ardeva Muhammad Luthfi Muhammad Ridho Mulyanti, Aisya Nadia Anggraini Putri Naldo, Exwil Naya Makaristi Andrea Nevy Sandra Nopi Kohirozi NUR EFENDI Nur Efendi Nur Efendi Nurhasan Syah OCI SHANIA PUTRI olivia julianti Rahmad Fikri Raimon Kopa Ravilqi Medri Rayhan Viedyatha Riko Maiyudi Rizki Amelia Sasqia Putri Roro Rasi Putra Rudy Anarta Rugbia Natasya Rusli HAR Saldy, Tri Gamela Skunda Diliarosa Skunda Diliarosta Syafrijon, Syafrijon Tamrin Kasim trihadma trihadma Triyanchy Afaz Umar, Iswandi Wahyu Prasetyo Agus Susanto Yasmi Antara Yaumal Arbi Yoszi Mingsi Anaperta Yugo Agustino Yuli Asri