Data Trawler - Survey Details

SOL_5941    - is a Marine National Facility voyage

Period: 2014-04-09 12:30 to 2014-04-26 11:30 UTC

Duration: 16.96 days

From: Darwin To: Darwin

Region: Timor Passage and Ombai Strait

Ship: Solander [details]

Description: RV Solander Voyage 5941 - Integrated Marine Observing System (IMOS) Indonesian Throughflow Mooring Recovery and Deployments: Timor Passage and Ombai Strait. Scientific Objectives: The aim of IMOS Indonesian Throughflow moorings is to sustainably and directly measure the leakage of Pacific thermocline and intermediate waters from the western equatorial Pacific into the South Indian Ocean in the two major passages: Timor Passage and Ombai Strait. The Indonesian Passages represent an important "choke point" of the global ocean overturning circulation and the climate system. The interannual to decadal variability of the size and depth distribution of the flow through this choke point remains a troublesome unknown. In particular, changes in this flow will reflect long term changes in the Pacific and Indian Ocean wind fields, particularly any change in the Walker Circulation, as predicted by coupled climate models forced by increasing Greenhouse Gas scenarios. Changes in the associated heat flux are also anticipated as the global oceans warm. The IMOS Indonesian Throughflow array design is based on the more comprehensive INSTANT process study and is deemed the minimal required mooring array to monitor the Indonesian Throughflow. The Ombai Strait and Timor Passage Throughflow components comprise about 11 Sv of the 14 Sv total interbasin exchange. This mooring array integrates with the AIMS NAOS shelf line, allowing estimates of the interbasin exchange to include the transport of very warm waters across the Australian North West Shelf. All moorings in the Timor Passage are located along a high precision swath line of the TOPEX/Jason satellite altimeter missions. These data will shed light on how best to exploit altimetric data over our shallow northern shelves, especially in data assimilating models.

Leader: B. Sloyan (CMAR) and B. Cowley (CMAR)

Project: IMOS Sustained observations of the Timor Passage and Ombai Strait components of the Indonesian Throughflow [details]

Marlin Metadata:-

Solander Voyage SOL_5941 CTD Data (April, 2014) [details]

Participants:- no records

Marine National Facility Reports - plans, summaries and data processing

• View the Survey Summary report - includes preliminary results, voyage narrative, types of data collected with C77/ROSCOP codes.

• View Survey map

Data publishing

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