STRUKTUR VERTIKAL DAN VARIABILITAS ARLINDO YANG MASUK KE TEPI BARAT LAUT BANDA
Open Access
- 31 August 2020
- journal article
- research article
- Published by Institut Pertanian Bogor in Jurnal Ilmu dan Teknologi Kelautan Tropis
- Vol. 12 (2), 457-472
- https://doi.org/10.29244/jitkt.v12i2.29142
Abstract
The Indonesian Throughflow (ITF) is an inter-ocean Pacific-Indian current system that passes Indonesian Seas, such as via the primary path of Makassar Strait to Flores Sea and via the secondary path of Lifamatola Strait to Banda Sea. This study aims to investigate the structure and volume transport estimate of ITF Eastern Flores Sea (Flores) and Northern Banda Sea (Banda) derived from ocean model output of INDESO between 2008 and 2014. Structure of the ITF is analyzied by the average of current component vertically and transport volume estimated by cross-section at Banda and Flores sea. Time-series variability of ITF is analyzed using band-pass filter and continuous wavelet transforms. The results showed that ITF Banda was characterized by flow dominantly towards south while ITF Flores depicted was flowing east along the North of Nusa Tenggara Islands. The vertical structure of ITF flow is intensified at a depth between 50 m and 150 m. The total volume transport estimate over the 7-year period from both ITF paths into the western Banda Sea is about 6.27 Sv (±3.81 Sv), which is a good agreement with previous model studies. Variations of transports ITF in Banda (Flores) is maximum during northwest (southeast) monsoon and minimum during southeast (northwest) monsoon. The variability of the ITF Banda is dominated intra-seasonal (ISV) and semi-annual periods (SAV), while the ITF Flores is annual period (AV).Keywords
This publication has 26 references indexed in Scilit:
- The Indonesian Throughflow and the Circulation in the Banda Sea: A Modeling StudyJournal of Geophysical Research: Oceans, 2019
- Coherent intraseasonal oceanic variations in the eastern equatorial Indian Ocean and in the Lombok and Ombai Straits from observations and a high‐resolution OGCMJournal of Geophysical Research: Oceans, 2014
- Seasonal Variation of the Indonesian Throughflow in Makassar StraitJournal of Physical Oceanography, 2012
- Three inflow pathways of the Indonesian throughflow as seen from the simple ocean data assimilationDynamics of Atmospheres and Oceans, 2010
- Annual variation of the southern boundary current in the Banda SeaDynamics of Atmospheres and Oceans, 2010
- What is driving the ITF? An illumination of the Indonesian throughflow with a numerical nested model systemDynamics of Atmospheres and Oceans, 2010
- Characteristics and variability of the Indonesian throughflow water at the outflow straitsDeep Sea Research Part I: Oceanographic Research Papers, 2009
- The deep-water motion through the Lifamatola Passage and its contribution to the Indonesian throughflowDeep Sea Research Part I: Oceanographic Research Papers, 2009
- Direct estimates of the Indonesian Throughflow entering the Indian Ocean: 2004–2006Journal of Geophysical Research: Oceans, 2009
- Makassar Strait throughflow, 2004 to 2006Geophysical Research Letters, 2008