Product catalogue
Outer Darwin Harbour Marine Survey 2015: Grain size data of seabed sediments.
<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.
<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/89840
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.4225/25/5702018E0CAC7
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Radke, L.C.
1 Author Nicholas, W.A.
2 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 Australian Institute of Marine Science
Voice Owner Northern Territory Department of Land Resource Management
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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- 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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Sediment grabs typically recovered about 0.1 cubic metres of undisturbed sediment from which a 250- 500 g sub-sample was taken to a depth of ~5 cm. Sub-samples were described from visual inspection, noting grain size, sorting, composition and Munsell colour then stored in plastic bags and refrigerated. In the laboratory, two different grain size measurements were undertaken. In the first method, sediments were first wet sieved to determine mud (<63 microns), sand (63-2000 microns) and gravel (>2000 microns) fractions as percentage of dry weight. Sediment > 63 um diameter were then dried, and subsequently dry sieved at whole phi values between 4 and -4 phi: these correspond to the Wentworth (1922) grain size boundaries between the major sediment classes representing the range from the base of very fine sand (63 um) to the base of coarse pebbles (16 mm). In the second method, a separate sub-sample (~1g) was used for laser diffraction measurement of the <1.4 mm fraction using a Malvern Mastersizer 2000 to derive statistics including the arithmetic mean, standard deviation, skewness and kurtosis.
- 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/26d434cd-cbc0-5312-e053-10a3070a62ec
- 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/89840
- Date info (Revision)
- 2018-04-22T08:34:33
- Date info (Creation)
- 2015-12-14T00:00:00
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