Data Trawler - Survey Details

SS2013_V04    - is a Marine National Facility voyage

Period: 2013-07-01 10:00 to 2013-07-26 00:00 UTC

Duration: 24.58 days

From: Fremantle To: Broome

Region: subtropical southeast Indian Ocean

Ship: Southern Surveyor [details]

Description: MNF Southern Surveyor research voyage SS2013_v04. Observations of remarkable eastward flows and eddies in the subtropical southeast Indian Ocean. Scientific Objectives: Our work will include a suite of CTD, microstructure, surface drifter and float observations,and a mooring that will contribute to answering a first-order gap in our understanding of the large-scale currents in the subtropical southeast Indian Ocean. The presence of a near-surface, eastward flow across the South Indian Ocean is a remarkable aspect of the upper-ocean circulation because it flows against the westward direction from Ekman and Sverdrup theory for this region. The flow often appears as a set of distinct currents and jets. These currents have been detected in observations and simulated in some numerical models. However the underlying mechanisms driving the eastward surface currents and their eventual interaction with the Leeuwin Current and downwelling against the coast remains unclear. Furthermore, they appear to be linked to the Indonesian Throughflow and Southern Ocean water masses formed south of Australia. Our primary goal in this work is to make new observations of the physical and biogeochemical structure of the eastward flows in the region between existing observations and the Australian coast, where their fate is unknown. This region is filled with energetic eddies generated by the Leeuwin Current. Our observations will also provide insight into the nature of the interaction of these eddies with the circulation and productivity of the interior Indian Ocean. Dynamical understanding of the Indian Ocean circulation is central to the outstanding problem in ocean climate projections of correctly including surface processes to project the spatial patterns of heat uptake, steric sea-level rise, and storage of carbon dioxide.

Leader: E. Schulz (BOM)

Project: National Facility External Users: E. Schulz (BOM) [details]

Marlin Metadata:-

Southern Surveyor Voyage SS2013_V04 ADCP Data [details]

Southern Surveyor Voyage SS2013_V04 CTD Data [details]

Southern Surveyor Voyage SS2013_V04 Hydrology Data [details]

Southern Surveyor Voyage SS2013_V04 Raw Data Tapes and Documentation [details]

Southern Surveyor Voyage SS2013_V04 Underway Data [details]

Southern Surveyor Voyage SS2013_v04, Pigment and Ocean Colour Data [details]

Participants - on ship:-

This list includes those that may have only been on part of the voyage. See voyage reports on 'Reports and Maps' tab for details.

Marine National Facility Reports - plans, summaries and data processing

• SS2013_V04 Scientific Highlight - report of the key outputs

• SS2013_V04 Underway Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.

• SS2013_V04 Voyage Summary - includes preliminary results, voyage narrative, types of data collected with C77/ROSCOP codes.

• SS2013_V04 Voyage Plan - includes objectives, investigator details, proposed data collection, voyage track and equipment to be used.

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Publications, reports and datasets from this voyage.

Data publishing

This is a list of online datasets hosted by CSIRO. Other processed datasets hosted by collaborating organisations may be found on the 'Metadata' or "Reports, Publications and Maps' tab.
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