Data

Tasmanian Natural Gas Pipeline Survey Aug-Sept 2000

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) CSIRO Oceans & Atmosphere - Hobart (Associated with)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/35736770-7d2d-0e54-e053-08114f8c6453&rft.title=Tasmanian Natural Gas Pipeline Survey Aug-Sept 2000&rft.identifier=Anzlic Identifier: ANZCW0306014659&rft.publisher=Australian Ocean Data Network&rft.description=In the planing of the construction of a gas pipeline from Longford in Victoria to Bell Bay in Tasmania by Duke Energy International various environmental approvals were required from the Tasmanian, Victorian and Commonwealth Governments in Australia. CSIRO Marine Research conducted a photographic inspection and took dredge samples of the seafloor at points along the proposed pipeline route to provide input to these environmental assessments.The marine section of the route runs from Seaspray (Vic) through to Five Mile Bluff (Tas). The survey method and results are provided in the form of a 'data report' . see link below.Progress Code: completedMaintenance and Update Frequency: notPlannedStatement: Using a chart showing the proposed pipeline route, the sample sites used on a Duke/Worley/Fugro geophysical survey conducted during August 2000 and a classification of the acoustic backscatter recorded on that survey. 50 sample sites were chosen, stratified by the backscatter classification. Each area of different backscatter was sampled at least once. Samples were evenly spaced through each uniform backscatter area. Sites were more closely spaced in areas where backscatter seemed to be changing over short distances, and in the Bassian Rise area (towards the northern end of the route). Of the 50 sites chosen, 26 coincided with sites where a sediment sample had been taken on the Worley survey. A 35 mm drop-camera was deployed to take 20 photographic images of the seafloor at each site. The photographic film was processed on board to monitor camera performance. Seafloor photographs were briefly examined at the time of processing to obtain immediate feedback on habitat types observed. Latitude and longitude position information from a GPS was logged onto computer at the time of firing the camera for each photograph so that each image is geo-referenced. Biological samples were taken from the seafloor at each of the photographic sites using a pipe dredge. This is a simple dredge constructed of heavy steel pipe about 800 mm in length and 300 mm diameter. It weighs approximately 50 kg and was dragged along the seafloor for five minutes to collect a biological sample. Photographs were examined post-cruise, by staff with previous experience with similar habitats in the SE region. They were then catalogued and stored in the laboratory for later analysis and interpretation if required. Representative photographs were digitised for inclusion in the data report. Samples were re-examined ashore, curated, but not identified beyond what could be done immediately by CSIRO staff familiar with this fauna. Further identification (which would be time consuming) can be arranged if required. Collections will be retained and held at CSIRO for 12months after collection&rft.creator=Anonymous&rft.date=2016&rft.coverage=westlimit=146.8; southlimit=-41; eastlimit=147.3; northlimit=-38.3&rft.coverage=westlimit=146.8; southlimit=-41; eastlimit=147.3; northlimit=-38.3&rft_rights=&rft_rights=Data is made available by CSIRO under a Creative Commons Attribution 4.0 International Licence, please see link. Data is supplied 'as is' without any warranty or guarantee except as required by law to be given to you. The data may not be free of error, comprehensive, current or appropriate for your particular purpose. You accept all risk and responsibility for its use.&rft_subject=oceans&rft_subject=Earth Science | Biological Classification | Animals/Invertebrates&rft_subject=Earth Science | Biological Classification | Animals/Invertebrates | Echinoderms&rft_subject=Earth Science | Biosphere | Aquatic Ecosystems | Benthic Habitat&rft_subject=Earth Science | Oceans | Bathymetry/Seafloor Topography | Seafloor Topography&rft_subject=Cameras - Still - Underwater&rft_subject=Dredges&rft_subject=Marine Features (Australia) | Bass Strait, TAS/VIC&rft_subject=Duke Energy Pipeline Survey 2000-2000&rft_subject=Ship: Dell Richey II&rft.type=dataset&rft.language=English Access the data
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Data is made available by CSIRO under a Creative Commons Attribution 4.0 International Licence, please see link. Data is supplied 'as is' without any warranty or guarantee except as required by law to be given to you. The data may not be free of error, comprehensive, current or appropriate for your particular purpose. You accept all risk and responsibility for its use.

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In the planing of the construction of a gas pipeline from Longford in Victoria to Bell Bay in Tasmania by Duke Energy International various environmental approvals were required from the Tasmanian, Victorian and Commonwealth Governments in Australia. CSIRO Marine Research conducted a photographic inspection and took dredge samples of the seafloor at points along the proposed pipeline route to provide input to these environmental assessments.The marine section of the route runs from Seaspray (Vic) through to Five Mile Bluff (Tas). The survey method and results are provided in the form of a 'data report' . see link below.

Lineage

Progress Code: completed
Maintenance and Update Frequency: notPlanned
Statement: Using a chart showing the proposed pipeline route, the sample sites used on a Duke/Worley/Fugro geophysical survey conducted during August 2000 and a classification of the acoustic backscatter recorded on that survey. 50 sample sites were chosen, stratified by the backscatter classification. Each area of different backscatter was sampled at least once. Samples were evenly spaced through each "uniform" backscatter area. Sites were more closely spaced in areas where backscatter seemed to be changing over short distances, and in the Bassian Rise area (towards the northern end of the route). Of the 50 sites chosen, 26 coincided with sites where a sediment sample had been taken on the Worley survey. A 35 mm drop-camera was deployed to take 20 photographic images of the seafloor at each site. The photographic film was processed on board to monitor camera performance. Seafloor photographs were briefly examined at the time of processing to obtain immediate feedback on habitat types observed. Latitude and longitude position information from a GPS was logged onto computer at the time of firing the camera for each photograph so that each image is geo-referenced. Biological samples were taken from the seafloor at each of the photographic sites using a pipe dredge. This is a simple dredge constructed of heavy steel pipe about 800 mm in length and 300 mm diameter. It weighs approximately 50 kg and was dragged along the seafloor for five minutes to collect a biological sample. Photographs were examined post-cruise, by staff with previous experience with similar habitats in the SE region. They were then catalogued and stored in the laboratory for later analysis and interpretation if required. Representative photographs were digitised for inclusion in the data report. Samples were re-examined ashore, curated, but not identified beyond what could be done immediately by CSIRO staff familiar with this fauna. Further identification (which would be time consuming) can be arranged if required. Collections will be retained and held at CSIRO for 12months after collection

Notes

Credit
Hydro Tasmania
Credit
Alan Butler
Credit
Karen Gowlett-Holmes
Credit
Bruce Barker

Data time period: 2000-08-31 to 2000-09-07

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147.3,-38.3 147.3,-41 146.8,-41 146.8,-38.3 147.3,-38.3

147.05,-39.65

text: westlimit=146.8; southlimit=-41; eastlimit=147.3; northlimit=-38.3

Subjects
Cameras - Still - Underwater | Dredges | Duke Energy Pipeline Survey 2000-2000 | Earth Science | Biological Classification | Animals/Invertebrates | Earth Science | Biological Classification | Animals/Invertebrates | Echinoderms | Earth Science | Biosphere | Aquatic Ecosystems | Benthic Habitat | Earth Science | Oceans | Bathymetry/Seafloor Topography | Seafloor Topography | Marine Features (Australia) | Bass Strait, TAS/VIC | Ship: Dell Richey II | oceans |

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Other Information
Tasmanian Natural Gas Pipeline Project. Aug-Sept 2000. Biological data report. CSIRO (Documentation Link)

url : https://www.marine.csiro.au/data/trawler/download.cfm?file_id=783

This work is licensed under a Creative Commons Attribution 4.0 International License (Documentation Link)

url : https://creativecommons.org/licenses/by/4.0/

Identifiers
  • Local : Anzlic Identifier: ANZCW0306014659
  • Local : Marlin Record Number: 14659
  • global : 35736770-7d2d-0e54-e053-08114f8c6453