Data Trawler - Survey Details

SS2011_V05    - is a Marine National Facility voyage

Period: 2011-09-21 07:00 to 2011-10-18 22:00 UTC

Duration: 27.63 days

From: Geraldton To: Fremantle

Region: Offshore north Perth Basin, WA coast

Ship: Southern Surveyor [details]

Description: Southern Surveyor Research Voyage ss2011_v05. The influence of natural hydrocarbon migration and seepage on the geological and biological systems of the offshore northern Perth Basin. Scientific Objectives 1. Map sites of natural hydrocarbon seepage in the offshore northern Perth Basin (Jones,Kennard, Ross, Greinert) On the basis of: acoustic signatures in the water column, shallow subsurface and on the seabed; geochemical signatures in rock and sediment samples and the water column, and; biological signatures on the seabed: document the spatial distribution of seepage sites and characterise the nature of the seepage at these sites (gas vs oil, macroseepage vs microseepage; palaeo vs modern day seepage). 2. Investigate generic structural controls on natural hydrocarbon seepage in the offshore northern Perth Basin, to determine the leaking versus sealing nature of individual faults within linked fault systems (Jones, Kennard). Quantify seepage indicators over sealing structures through surveying the seabed over known oil and gas accumulations, then compare and contrast the results with indicators of seepage over structures with residual hydrocarbon columns that are known to have leaked or be leaking, then use these controls to assess the leaking or sealing nature of other structures in a variety of environments. 3. Assess the influence and potential future impact of natural hydrocarbon seepage on geological and biological systems and anthropogenic activities in Australias southwest margin (Jones, Heap, Greinert). Determine whether the level of natural hydrocarbon seepage within the offshore northern Perth Basin: a) is likely to impact climate change due to methane release in shallow water, b) is a control on benthic habitat distribution, c) presents a natural hazard such as for drilling or slope stability, or d) has the potential to change or influence petroleum prospectivity.

Leader: A. Jones (Geoscience Australia)

Project: National Facility External Users: A. Jones (Geoscience Australia ) [details]

Marlin Metadata:-

Southern Surveyor Voyage SS2011_V05 ADCP Data [details]

Southern Surveyor Voyage SS2011_V05 CTD Data [details]

Southern Surveyor Voyage SS2011_V05 Multibeam Echosounder Data [details]

Southern Surveyor Voyage SS2011_V05 Raw Data Tapes and Documentation [details]

Southern Surveyor Voyage SS2011_V05 Underway 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

• SS2011_V05 Scientific Highlight - report of the key outputs

• SS2011_V05 Underway Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.

• SS2011_V05 Voyage Summary - includes preliminary results, voyage narrative, types of data collected with C77/ROSCOP codes.

• SS2011_V05 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.
Use the Get data link on the right to extract data using the NCMI Data Trawler.

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