Data

2019-20 Honours project - Characterising the variability of the Indonesian Throughflow in ocean models

University of Tasmania, Australia
Zhang, Fan ; Nikurashin, Maxim
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://metadata.imas.utas.edu.au/geonetwork/srv/eng/search?uuid=beaf3cf3-1297-440d-b31a-3beefb40bd56&rft.title=2019-20 Honours project - Characterising the variability of the Indonesian Throughflow in ocean models&rft.identifier=http://metadata.imas.utas.edu.au/geonetwork/srv/eng/search?uuid=beaf3cf3-1297-440d-b31a-3beefb40bd56&rft.description=The Indonesian Throughflow (ITF) is connects the Pacific Ocean and the Indian Ocean in the tropics. The ITF plays an essential role in ocean circulation and regional climate: it hosts strong mixing that can change water-mass properties, influences the sea surface temperature in both oceans and affects the global ocean volume and heat transports. The ITF transports water properties across Indonesian Seas characterized by complex topography with most of the water entering through two main inflow straits, Makassar and Lifamatola straits, and exiting into the Indian Ocean through three main outflow straits, Ombai, Lombok and Timor straits. The ITF shows variabilities on different time scales, including decadal, interannual, seasonal and intra-seasonal. The ITF variability on intra-seasonal time scales is driven by remotely generated Kelvin and Rossby waves that propagate into the Indonesian Seas from the Indian Ocean and Pacific Ocean. This project focuses on the variability driven by Kelvin waves that propagate into Indonesian seas through three main outflow straits (Ombai, Lombok and Timor). We use a global ocean model and a high-resolution regional ITF model to characterize these variabilities at different depths and in different straits. We also use the mooring observations from the INSTANT program to validate the ocean models.Maintenance and Update Frequency: notPlannedStatement: In this project, we used three models to simulate the ITF and its variability: two models were global ocean models at 0.1-degree resolution (used in Australia for ocean simulations), and one model was a process-study regional model used to study processes within the ITF region at a range of resolutions&rft.creator=Zhang, Fan &rft.creator=Nikurashin, Maxim &rft.date=2020&rft.coverage=westlimit=115.590877086; southlimit=-11.324890089; eastlimit=125.566463024; northlimit=-6.47384824261&rft.coverage=westlimit=115.590877086; southlimit=-11.324890089; eastlimit=125.566463024; northlimit=-6.47384824261&rft.coverage=uplimit=500; downlimit=0&rft.coverage=uplimit=500; downlimit=0&rft_rights=The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=http://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=oceans&rft_subject=Kelvin waves&rft_subject=frequency spectra&rft_subject=temperature&rft_subject=velocity&rft_subject=OCEAN UPWELLING/DOWNWELLING&rft_subject=EARTH SCIENCE&rft_subject=CLIMATE INDICATORS&rft_subject=ATMOSPHERIC/OCEAN INDICATORS&rft_subject=PLANETARY/ROSSBY WAVES&rft_subject=ATMOSPHERE&rft_subject=ATMOSPHERIC PRESSURE&rft_subject=TOPOGRAPHIC WAVES&rft_subject=Physical Oceanography&rft_subject=EARTH SCIENCES&rft_subject=OCEANOGRAPHY&rft.type=dataset&rft.language=English Access the data

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The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.

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Brief description

The Indonesian Throughflow (ITF) is connects the Pacific Ocean and the Indian Ocean in the tropics. The ITF plays an essential role in ocean circulation and regional climate: it hosts strong mixing that can change water-mass properties, influences the sea surface temperature in both oceans and affects the global ocean volume and heat transports. The ITF transports water properties across Indonesian Seas characterized by complex topography with most of the water entering through two main inflow straits, Makassar and Lifamatola straits, and exiting into the Indian Ocean through three main outflow straits, Ombai, Lombok and Timor straits.

The ITF shows variabilities on different time scales, including decadal, interannual, seasonal and intra-seasonal. The ITF variability on intra-seasonal time scales is driven by remotely generated Kelvin and Rossby waves that propagate into the Indonesian Seas from the Indian Ocean and Pacific Ocean. This project focuses on the variability driven by Kelvin waves that propagate into Indonesian seas through three main outflow straits (Ombai, Lombok and Timor). We use a global ocean model and a high-resolution regional ITF model to characterize these variabilities at different depths and in different straits. We also use the mooring observations from the INSTANT program to validate the ocean models.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: In this project, we used three models to simulate the ITF and its variability: two models were global ocean models at 0.1-degree resolution (used in Australia for ocean simulations), and one model was a process-study regional model used to study processes within the ITF region at a range of resolutions

Notes

Credit
IMAS Honours Student Program 2019-2020

Created: 2020-08-27

Data time period: 2019-06-12 to 2020-06-12

This dataset is part of a larger collection

Click to explore relationships graph

125.56646,-6.47385 125.56646,-11.32489 115.59088,-11.32489 115.59088,-6.47385 125.56646,-6.47385

120.578670055,-8.899369165805

Other Information
(DATA ACCESS - .m code and frequency spectra [explore all files])

uri : https://data.imas.utas.edu.au/attachments/beaf3cf3-1297-440d-b31a-3beefb40bd56

(THESIS - Characterising the variability of the Indonesian Throughflow in ocean models [PDF direct download])

uri : https://data.imas.utas.edu.au/attachments/beaf3cf3-1297-440d-b31a-3beefb40bd56/Fan_Zhang_thesis.pdf

Identifiers
  • global : beaf3cf3-1297-440d-b31a-3beefb40bd56