Data Trawler - Survey Details

SS2012_V04    - is a Marine National Facility voyage

Period: 2012-08-11 06:00 to 2012-09-05 23:30 UTC

Duration: 25.73 days

From: Fremantle To: Fremantle

Region: subtropical southeast Indian Ocean

Ship: Southern Surveyor [details]

Description: MNF Southern Surveyor research voyage SS2012_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. However the underlying mechanisms, driving the eastward surface currents and their eventual interaction with the Leeuwin Current and down welling remains unclear. 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. Piggy-back Projects include : Upper-ocean mixing estimates using a VMP-200 microstructure profiler, Nitrogen uptake in the eastward flows feeding the Leeuwin Current System, Phytoplankton dynamics in the eastward flows feeding the Leeuwin Current System and Offshore sources of high nitrate, low oxygen upper ocean waters. Part extract from voyage plan, please read plan for full details.

Leader: H. Phillips (IMAS-UTas)

Project: National Facility External Users: N. Bindoff (IMAS, UTas) [details]

Marlin Metadata:-

Southern Surveyor Voyage SS2012_V04 ADCP Data [details]

Southern Surveyor Voyage SS2012_V04 CTD Data [details]

Southern Surveyor Voyage SS2012_V04 Hydrology Data [details]

Southern Surveyor Voyage SS2012_V04 Multibeam Echosounder Data [details]

Southern Surveyor Voyage SS2012_V04 Pigment and Ocean Colour Data [details]

Southern Surveyor Voyage SS2012_V04 Raw Data Tapes and Documentation [details]

Southern Surveyor Voyage SS2012_V04 Underway Data [details]

Metadata from OBIS Australia datasets:- biological data is published via the OBIS-AU IPT server and delivered to one or more of OBIS, ALA and GBIF

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

• SS2012_V04 Voyage Plan - includes objectives, investigator details, proposed data collection, voyage track and equipment to be used.

• SS2012_V04 Underway Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.

• SS2012_V04 Voyage Summary - includes preliminary results, voyage narrative, types of data collected with C77/ROSCOP codes.

• SS2012_V04 Scientific Highlight - report of the key outputs

• 

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.
Use the Get data link on the right to extract data using the NCMI Data Trawler.

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