Rig Seismic Survey 112: Continuous Geochemical Tracers (CGT), Natural Processes and Anthropogenic Inputs to Seawater Off Sydney

A pilot project conducted in October 1991, from Rig Seismic (AGSO Survey 104), utilising the continuous geochemical tracer [CGT] capability, showed that theanalyses of oceanic waters for light hydrocarbon content provides a useful method for characterising pollutants from various sources (BMR Research Newsletter, 16). The offshore Sydney component of Survey 104 was conducted between Botany Bay and North Head. Light hydrocarbon anomalies were detected from each of the three deepwater ocean outfalls operated by the Water Board. The results suggested that the molecular compositions of different hydrocarbon mixtures may be useful indicators of hydrocarbon 'sources' mixed together in the coastal zone. A reprint of the BMR Research Newsletter article of the pilot survey is reproduced in Figure 1.1.


The usefulness of the CGT equipment, demonstrated during that pilot project, resultedin an additional survey (Survey 112), conducted on Rig Seismic during September/October 1992 (Heggie et al., 1992), which combined scientific staff from AGSO and the Water Board (Sydney). Scientific activities on Survey 112 included: (i)seafloor sampling, to gather environmental baseline information on the nutrient and contaminant (heavy metals and organochlorines) status of sediments, and also sedimentology of the nearshore region and, (ii) water column analyses, comprising approximately 500 line-km of CGT data (light hydrocarbons in seawater complemented with temperature, salinity, dissolved oxygen and pH) collected in the vicinity of the deepwater ocean outfalls.


The purposes of this Record are to: (i) provide a description of the edited hydrographic (temperature and salinity), oxygen and pH data and, (ii) combine these data with some of the light hydrocarbon (DHD) data. Sediment and DHD data collected during Survey 112 are addressed in other AGSO Records (Heggie et al., 1993a; Heggie et al., I993b). A separate part of Survey 112, conducted with scientific staff from Sydney University, the NSW Geological Survey and the Ocean Sciences Institute, between Newcastle and Wollongong provides a regional context for thoseobservations focussed about Sydney. The preliminary results of that part of Survey 112 are included in Bickford and Heggie et al. (1993).

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Identification info

Date (Publication)
1994-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/14689

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Australian Geological Survey Organisation

 Canberra
Author

Heggie, D.T.

 1
Author

Bishop, J.H.

 2
Name

Record

Issue identification

1993/010

ISBN

0642192227

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ED
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Commonwealth of Australia (Geoscience Australia)
Custodian

Commonwealth of Australia (Geoscience Australia)

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  • Geoscientific information

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S
E
W


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Unknown

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Title

Product data repository: Various Formats

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Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

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  • Record

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  • marine

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  • AU-NSW

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  • Earth Sciences

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  • Published_External

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Creative Commons Attribution 4.0 International Licence

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CC-BY

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4.0

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http://creativecommons.org/licenses/

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License

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Australian Government Security ClassificationSystem

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2018-11-01T00:00:00
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Unclassified
Language
English
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UTF8

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OnLine resource

Download the Record (pdf)

Download the Record (pdf)

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  • pdf

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GA Publication

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Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified

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Metadata identifier
urn:uuid/a05f7892-7487-7506-e044-00144fdd4fa6

Title

GeoNetwork UUID

Language
English
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UTF8
Contact
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Point of contact

Commonwealth of Australia (Geoscience Australia)

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Type of resource

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Document
Name

GA Record

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/14689

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/a05f7892-7487-7506-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:17:42
Date info (Creation)
1996-10-30T00:00:00

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
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W


Keywords

marine

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