Product catalogue
Outer Darwin Harbour Marine Survey 2015: TCO2 production and total oxygen uptake of seabed sediments from core incubation experiments.
<p>This resource contains surface sediment data for Outer Darwin Harbour collected by Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Northern Territory Government (Department of Land Resource Management) during the period from 28 May and 23 June 2015 on the RV Solander (survey SOL6187/GA0351). This project was made possible through offset funds provided by INPEX-led Ichthys LNG Project to Northern Territory Government Department of Land Resource Management, and co-investment from Geoscience Australia and Australian Institute of Marine Science. The intent of this four year (2014-2018) program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps that underpin marine resource management decisions. The specific objectives of the survey were to:
<p>1. Obtain high resolution geophysical (bathymetry) data for outer Darwin Harbour, including Shoal Bay;
<p>2. Characterise substrates (acoustic backscatter properties, grainsize, sediment chemistry) for outer Darwin Harbour, including Shoal Bay; and
<p>3. Collect tidal data for the survey area.
<p>Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; physical samples of seabed sediments, underwater photography and video of grab sample locations and oceanographic information including tidal data and sound velocity profiles. This dataset comprises O2 consumption and CO2 production rates measured from core incubation experiments conducted on seabed sediments.
<p>A detailed account of the survey is provided in: <p>Siwabessy, P.J.W., Smit, N., Atkinson, I., Dando, N., Harries, S., Howard, F.J.F., Li, J., Nicholas, W.A., Potter, A., Radke, L.C., Tran, M., Williams, D. and Whiteway, T., 2015. Outer Darwin Harbour Marine Survey 2015: GA0351/SOL6187 Post-survey report. Record 2016/008. Geoscience Australia, Canberra. http://dx.doi.org/10.11636/Record.2016.008
Simple
Identification info
- Date (Publication)
- 2015-01-01T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/89832
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.4225/25/5702015324698
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Radke, L.C.
1 Author Carey, M.
2 Author Wintle, C.
3 Author Trafford, J.M.
4 Author Tubby, J.
5 Owner Australian Institute of Marine Science
Voice Owner Northern Territory Department of Land Resource Management
Voice Owner Commonwealth of Australia (Geoscience Australia)
Voice
- Point of contact
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Role Organisation / Individual Name Details Custodian EGD
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice Owner Northern Territory Department of Land Resource Management
Voice Owner Australian Institute of Marine Science
Voice
- Topic category
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- Oceans
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Keywords
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Marine Data
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- Theme
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geochemistry
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- Theme
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marine environmental baselines
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- Theme
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continental shelf
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- Theme
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seabed
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- Theme
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marine survey
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- Keywords
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NT
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Marine Geoscience
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Download the data (xlsx)
Download the data (xlsx)
- Distribution format
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xlsx
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- OnLine resource
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Link to collection record
Link to collection record
Resource lineage
- Statement
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Seabed sediments were collected with a Smith McIntyre grab. Two 5 cm diameter cores of surface sediment were extracted by pushing core barrels into these sediments. The cores were overlain by 0.153 L of filtered and uv-treated seawater were incubated in the dark for ~4-6 hours at ~25oC after a ~3 hour pre-incubation period. Dissolved oxygen levels were measured at ~30 minute intervals using the Presens technology. Samples for DIC analysis were taken at the start and finish of each incubation. Blank cores comprising filtered and uv-treated seawater only accompanied all incubations. Dissolved inorganic carbon concentrations (DIC) were determined using a DIC analyser and infrared-based CO2 detector (Geoscience Australia). CO2 production and O2 consumption rates were calculated by concentration differences (T=1 minus T=0) over the course of the incubation. Accuracy of O2 measurements was ± 0.1 mg L-1. The %RSDs of the precisions and accuracies of the dissolved inorganic carbon analyses both ranged from 0.3 to 0.4. The O2 consumption and CO2 production rates of the blank samples were -2.5 ± 2.1 and 0.8 ± 2.5 mmol m-2 d-1 respectively.
- Hierarchy level
- Dataset
- Description
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Source data not available.
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/2670c0f1-9687-6a4f-e053-12a3070a5f28
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Dataset
- Name
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dataset
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/89832
- Date info (Revision)
- 2018-04-22T08:37:09
- Date info (Creation)
- 2015-12-09T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551