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Journal : IJOG : Indonesian Journal on Geoscience

Karst Aquifer Characterization by Means of Its Karstification Degree and Time Series Analysis (Case: Ngerong Spring in Rengel Karst, East Java, Indonesia) Mujib, Muhammad Asyroful; Adji, Tjahyo Nugroho; Haryono, Eko; Naufal, Muhammad; Fatchurohman, Hendy
Indonesian Journal on Geoscience Vol. 11 No. 1 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.1.45-60

Abstract

The purpose of this study is to define the characteristics of the karst aquifer, which is approximated by the parameters of (1) degree of karstification (Dk) and (2) time series analysis (cross-correlation and auto-correlation). This research focuses on the Ngerong Spring, the largest spring in Rengel Karst, East Java, Indonesia. Pendant rain gauge RG-3M and HOBO U20L-02 water-level data loggers were installed over one year with a recording interval of 15 minutes. Furthermore, after one year of time-series discharge data was obtained, the discharge recession coefficient was applied to make the recession formula. It was then used to estimate the karstification degree scale from 1 to 10. The aquifer memory system and the spring response to rainfall events were analyzed by auto-correlation and cross-correlation. The results of this study indicate that the karstification degree (Dk) of the Ngerong Spring system is 4.8-5.0, with one laminar and one turbulent flow subregime type. The aquifer system comprises a subregime with turbulent and laminar flow, where the substantial role in groundwater discharge plays the subregime with laminar flow. Meanwhile, time series analysis shows that the capacity of aquifer storage in the Ngerong Spring is large enough. It has a memory effect for 26.41 days, followed by a rapid response to rainfall events within 8 hours. Compared with several other karst sites in Java, the Ngerong Spring aquifer has the youngest development level with the best storage and the slowest release.
Co-Authors A, Biyandra Timothee Abdurrahmansyah Abdurrahmansyah, Abdurrahmansyah Achmad Achmad Achmad Chumaidi, Achmad Ade Gohan, Muhammad Adrian Permana Zen Agmi, Nadia Agus Riyanto, Indra Ahmad Cahyadi **) Ahmad Suriansyah Ahsyar, Tengku Khairil Akrom, Muhamad Al Fahreza, Muhammad Daffa Al-Azies, Harun Alfarizky, M Ferdy Agus Alfitri, Mira Ali Asroni Ali Rakhman Hakim Alzami, Farrikh Amanda Cahyadewi, Felicia Andayan, Melia Andrean, Muhammad Niko Anggi Pramunendar, Ricardus Anggita, Ivan Maulana Anisa Anisa Aprillia Dwi Ardianti Ardiansyah, Felix Ardytha Luthfiarta Arifitama, Budi Arsy, Selma Kendida Atthoriq, Muhamad Naufal Aulyanti, Davina Dewi Ayu Pertiwi Azka, Muhammad Azwar, Erizaldy Bayu Kurniawan Brawijaya, Kriska Brilianto, Rivaldo Mersis Budi Setiawan Budoyo, Joto Candra, Mellyana Chandra Pratama, Ragil Cinantya, Celia Darmawahyuni, Annisa Denta Saputra, Fahrizal Desthabu, Meurina Dewi Puspaningtyas Dewi, Ernia Novika Dinda Lestarini Dwi Laksono, Angga Dwi Putra, Rakhmat Eka Yuniarto Eko Haryono Endang Komariah, Endang Erwin Yudi Hidayat Fadillah Putra Fadlullah, Rizal Fahmi Amiq Fajri, Aulia Romadhona Jihad Al Fariski, Aulia Isnaeni Fatchurohman, Hendy Fathonah, Naila Izzatun Fauziah, Ismahani Febriyanto, Hendra Ferdiansyah, Muhammad Reynaldi Fil'Awalin, Hanif Firdaus Firdaus Firmansyah, Gustian Angga Ghaly, Raihan Athallah Guruh Fajar Shidik Habibi, Alif Farhan Handar Subhandi Bakhtiar Handayani, Ni Made Kirei Kharisma Hardiana Widyastuti Harisa, Ardiawan Bagus Hariyadi, Nursyifa Nada Hartono, Andhika Rhaifahrizal Harun Al Azies Hayatul Cholsy Helda Orbani Rosa Hermansyah Hidayat, Novianto Nur Hilary Reinhart Husaini Husda IDA RAHMAWATI Ika Wiani Ilma, Novita Indra Refipal Sembiring Indrawan, Michael Inggih Permana Irawan, Diki Surya Irlianda, Rahma Ismail, Mahesa Isnaini, Lisa Fajri ISWAHYUDI ISWAHYUDI Jazman, Muhammad Jun Justinar K, M. Rizal Kharisma, Ni Made Kirei Khoirunnisa, Emila Kurniawan, Anggy Tyas Labib, M. Ainul Ledy Diana Listya Endang Artiani, Listya Endang Liya Umaroh, Liya Lusi Ariyani M Widyastuti Malahayatie Mallorca, Muhammad Nur Alfat Margaretha Widyastuti Marsuni, Yusriadi Marwan, Arif Masliana Masliana, Masliana Megantara, Rama Aria Miftahul Jannah Moch Anjas Aprihartha Moch. Solikin, Moch. Muhammad Aziz Muhammad Fachrurrozi Bafadal Muhammad fauzan Mujib, Muhammad Asyroful MUKAROMAH MUKAROMAH Muljono Muljono Muslem, Asnawi Mylova, Rezha Willy Putra Ningrum, Novita Kurnia Noor Ageng Setiyanto, Noor Ageng Norma Eralita Nurhayati Nurhayati Nurjaman, Satya Pirman Nursantri Yanti Onggo, Nico Pamungkas, Bintang Putra Dwi Prabowo, Wahyu Aji Eko Prafinda Ababil, Putri Prasetyo Adi, Muhammad Wahyu Prayoga, Yegi Pulung Nurtantio Andono Putra, Permana Langgeng Wicaksono Ellwid Putri Rachmadani, Nisa Rafid, Muhammad Rafly, Muhammad Naufal Rahayu, Linda Zulkifa Rahma, Anne Rahmah, Mulia Rajudin, Rajudin Ramadhan Rakhmat Sani Ramadhan, Fajri Rani Maharani Respati, Adnasohn Aqilla Ricardus Anggi Pramunendar Richo Kurniawan, Ibnu RISAL, SYAHLAN Riswandi, Muh Syahlan Riyanto, Indra Agus Safitri, Aprilyani Nur Safitriani, Indah Sagita, Adilah Nisrina Ayu Samangi, Arfina Sari Ayu Wulandari Sarifah Putri Raflesia, Sarifah Putri Sariman, Syahrul Sa’adah, Muna Sepe, Muslimin Silalahi, Purnama Ramadani Silvester Dian Handy Permana, Silvester Dian Handy Siregar, Karina Josephine Siti Anisah Siti Nurmaini Situmeang, Zefanya Angelica Sri Sentanu, I Gede Eko Putra Sri Winarno Sudarmin Sudibyo, Usman Suhendra Sumartono Sutomo, Rudi Tjahyo Nugroho Adji Tomy Perdana Trihandono, Donny Trisnapradika, Gustina Alfa Ulhaq, M. Jia Umar Fakhrizal, Irsyad Wahyu Ristiawan, Angga Welgaputri, Feby Wianda, Muhammad Nabiel Augis Wibawa, Yohanes Eka Winda, Nadia Oktavia Wulandari, Wita Wulansari, Rindi Yudhistira, M Halley Zahra, Lintang Aulia Zahro, Azzula Cerliana Zami, Farrikh Al Zayn, Afta Ramadhan Zulfikar Jayakusuma