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Journal : Science and Technology Indonesia

An Updated Water Masses Stratification of Indonesian Maritime Continent (IMC) Attributed to Normal and ENSO Conditions by Argo Float Bahiyah, Amirotul; Wirasatriya, Anindya; Mardiansyah, Wijaya; Iskandar, Iskhaq
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.299-313

Abstract

The tropical area of the Indonesian Maritime Continent (IMC) is frequently regulated by El Niño Southern Oscillation (ENSO), resulting in various water mass stratification in every climate event, such as El Niño and La Niña occurrences. As a consequence, changes in the typical Indonesian Throughflow (ITF) are linked to ENSO circumstances that affect the Indian Ocean. This study used Argo float data to evaluate the change in water mass stratification and vertical density profiles along the main pathway of ITF at each event. However, due to a scarcity of observation data, the comparison study of normal to ENSO occurrences has been limited in the ITF area. In typical circumstances throughout the year, the entrance channel (the western Pacific Ocean, the northern waters of Molucca Island, and the Halmahera Sea) had a higher saline value and cooler water masses than other ITF channels, with a range of roughly 33.5 - 35.5 PSU/13 - 22 ◦C, particularly during the Northwest (NW) Monsoon (December to February or DJF). Unlike the inlet, the Temperature-Salinity (T-S) diagram showed a declining value in both parameters (Celebes Sea, Makassar Strait, and Molucca Sea). Still, the outflow pathway in the Southeastern Tropical Indian Ocean (SETIO) showed a rising T-S diagram. During La Niña events, IMC water masses are often portrayed as fresher and warmer, while reverse circumstances are depicted in El Niño events with exclusion at SETIO station, indicating saltier and colder water masses than normal conditions. An extreme alteration with a large T-S range is mostly depicted in Makassar Strait from Southeast (SE) monsoon (September to November or SON) to NW monsoon, followed by the Banda Sea and then the Molucca Sea.
Co-Authors Adi Wibowo Adinda Rizki Amalia Adivitasari, Reska Mega Adzkia Pincta Milenia Afrina Aysira Agus Hartoko Almunawir, Muhammad Fakhri Khairillah Ambariyanto Ambariyanto Andhita, Laviola Reycha Fitri Andita Agung Andreas Nur Hidayat Andriana Kartina Wingtyas Anggoro, Tri Danny Anggraeni, Nimas Ratri Kirana Anisa Dewi Nugraheni Aris Ismanto Ashilah, Azizah Anis Attaqwa, Rizal Aziis, Dimas Miftahul Bahiyah, Amirotul Baskoro Rochaddi Bayu Munandar Budi Purwanto Chin, Wei Hong Claus, Berril Denny Nugroho Sugianto Dini Oktaviani Dwi Haryo Ismunarti Dwi Haryo Ismunarti Eko Setyobudi Elis Indrayanti Enita, Siti Yasmina Faishal Widiaputra Nugraha Faizal Rachman Fajar Hudoyo Febrianto, Sigit Firman Ramadhan Fuji Anida Futoki Sakaida Galuh Permatasari Gentio Harsono Gentio Harsono Gentur Handoyo Georgina Faulia Rachman Gultom, Iqbal S. Gunady, Stephanie Michelle Hadi Endrawati Hariyadi Hariyadi Hariyadi, Hariyadi Hasrizal Bin Shaari Hastuti Hastuti Heryoso Setiyono Heryoso Setiyono Himawa, Daenk Hiroshi Kawamura I Ketut Agung Enriko Indra Budi Prasetyawan Indra Budi Prasetyawan Irsyad Abdi Pratama Iskhaq Iskandar Ita Widowati Jarot Marwoto Jarot Marwoto Jayawiguna, Muhammad Hikmat Jihadi, Muhammad Shulhan Johannes Hutabarat Jusup Suprijanto Juviani, Dian Kevifa Satria Widjaya Krisna, Heru Nur Kubota, Naoyuki Kunarso Kunarso Kurnianingsih Kurnianingsih, Kurnianingsih Lilik Maslukah Louis Jannahtuna'im Koes Miranda Lukman, Annisa Aulia Lutfan Lazuardi Maria Griselda Novita Maro, Jahved Ferianto Maulana Al Faridzie Metrio Swandiko Muh Yusuf Muh Yusuf Muhamad Hafiz Maulavi Haban Muhamamd Helmi Muhammad Faiq Marwa Noercholis Muhammad Helmi Muhammad Helmi Muhammad Zainuri Muslim Muslim Mustaqim, Ikhsan Nabilah Rizki Niken Dwi Prasetyarini Novi Susetyo Adi Nugraha, R. Bambang Adhitya Nugroho Agus D Nurul Hickmah Nurul Latifah Parichat Wetchayont Parichat Wetchayount Petrus Subardjo Pratama, Dhimas Prabu Prayogi Prayogi Purwanto Purwanto Purwanto Purwanto Putri, Elsa Mayora Jovanka Raden Ario Rahmadiana Andini Respati, Deodato Naresvara Rayi Resy Sekar Sari Resy Sekar Sari Retno Hartati Ridarto, Arij Kemala Yasmin Rifqi N. Agassi Rikha Widiaratih Riza Yuliratno Setiawan Rizky Aditya Rudhi Pribadi Sabila, Anis Yasmin Sadewo, M. Firouz Dimas Saragih, Laurentia Alexandra Selkofa. M, Warisatul Anbiya Seprianto, Abdal Simangunsong, Felix Gok Asi Simatupang, Ariel Oscar Paskario Sinaga, Boby Christian Sri Murtiana Sri Yulina Wulandari Sugeng Widada Sunaryo Sunaryo Suryanti - Susilodewi, Sinta Dwis Teguh Agustiadi Teguh Prayogo Teuku Fauzan Zul Aufar Ulung Jantama Wisha Ummu Salma Wangdiarta, Fressan Patrick Warsito Atmodjo Wetchayont, Parichat Widiaratih, Rikha Widodo S Pranowo Widodo S. Pranowo Widodo, Dzaky Malik Putra Wijaya Mardiansyah, Wijaya Yeyen Novita Sari Yuhendrasmiko, Randy Zulfa, Istna Nabila