Darwin Harbour Habitat Mapping Program: Sediment grain size data
This resource contains sediment grain size data and their summary statistics for the greater Darwin Harbour region. These data were derived from the measurement of sediment grain sizes from seabed samples collected as part of a baseline habitat mapping program for the Darwin Harbour region, including Bynoe Harbour. This project was funded through offset funds provided by INPEX-led Ichthys LNG Project to the Northern Territory Government’s Department of Environment and Natural Resources (NTG-DENR) with co-investment from Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS). The intent of this 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 and information to underpin marine resource management decisions. The sediment samples were collected during multiple surveys undertaken by GA, AIMS and NTG-DENR between 2011 and 2017. A total of 499 samples are reported on from 489 stations with all grain size data published in the Marine Sediments Database (MARS). This dataset is published with the permission of the CEO, Geoscience Australia.
Simple
Identification info
- Date (Creation)
- 2019-02-08T16:00:00
- Date (Publication)
- 2020-01-08T02:00:04
- Citation identifier
- ga-dataSetURI/https://pid.geoscience.gov.au/dataset/ga/126828
- Cited responsible party
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Role Organisation / Individual Name Details Author Nicholas, W.A.
- Status
- Completed
- Spatial representation type
- Topic category
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- Geoscientific information
Extent
Temporal extent
- Time period
- 2011 2017
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Administration to complete
- Edition
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Administration to complete
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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sediment
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- Keywords
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grain size
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- Keywords
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seabed
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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 (shp) [84 KB]
Download the data (shp) [84 KB]
- OnLine resource
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Download the data (xlsx) [156 KB]
Download the data (xlsx) [156 KB]
- OnLine resource
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Link to collection record
Link to collection record
Resource lineage
- Statement
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This dataset is composed of seabed sediment grain size (particle size) and sediment texture data derived from the measurement of grain sizes from sediment collected during multiple surveys including GA0333 (Siwabessy et al., 2015), GA0341 (Siwabessy et al., 2015), GA0351/SOL6187 (Siwabessy et al., 2016), GA4452/SOL6432 (Siwabessy et al., 2017), GA0356 (Radke et al., 2017), and GA0358 and GA0359 (Radke et al., 2018).
Sediment grain size was measured at the laboratories of Geoscience Australia from samples collected during the marine surveys for the greater Darwin Harbour region project. Sediment grain sizes were measured using a Malvern Mastersizer laser diffractometer on the < 63 um size fraction (mud) and standard sieve techniques were used to measure the > 63 um fractions (sand and gravel). Because the theoretical basis of both techniques is based around the measurement of spherical particles, the results were combined into a single dataset that covers the size range from fine clay to cobbles, following the sediment grain size classification of Wentworth (1922). Results presented are the complete sediment distributions from 9.5 to -4.5 Φ at 1 Φ intervals, and Mud, Sand and Gravel values, all as percentages. Each Φ value represents the mid-range value for each grain size bin. Statistics calculated and included here are Folk and Ward logarithmic graphical mean and standard deviation (reported as sorting) values (Folk and Ward, 1957). Sediment textures are also presented, and follow the classification of Folk (1974) for coarse grained sediment, and Long (2006) for the EUNIS level 3 sediment texture classes. Both Folk (1974) and Long (2006) classifications are based on the relative proportions of Mud, Sand and Gravel, and the Long (2006) classification is a simplification of Folk (1974).
References:
Folk, R. L. 1970. Petrology of Sedimentary Rocks. Hemphill Publishing, Austin, Texas. 182 pp.
Folk, R. L., Ward, W. C. 1957. Brazos River Bar: a study in the significance of grain size parameters. Journal of Sedimentary Petrology, 27, 3-26.
Long, D. 2006. BGS detailed explanation of seabed sediment modified Folk classification. Available from: http://www.emodnet-seabedhabitats.eu/PDF/GMHM3_Detailed_explanation_of_seabed_sediment_classification.pdf
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., Whiteway, T. 2016. Outer Darwin harbour marine survey 2015: GA0351/SOL6187 post-survey report. Geoscience Australia Record 2016/08, 117 pp.
Siwabessy, P. J. W., Smit, N., Atkinson, I., Dando, N., Harries, S., Howard, F. J. F., Li, J., Nicholas, W. A., Picard, K., Radke, L. C., Tran, M., Williams, D., Whiteway, T. 2017. Bynoe Harbour marine survey 2016: GA4452/SOL6432 post-survey report. Geoscience Australia Record, 2017/04. 113 pp.
Radke, L., Smit, N., Picard, K., Nicholas, T., Li, J. 2017. Outer Darwin Harbour shallow water sediment survey 2016: GA0356 post-survey report. Geoscience Australia Record, 2017/06. 77 pp.
Radke, L., Smit, N., Li, J., Hunt-Lew Fatt, K., Low Choy, D., Harries, S, Windsor, J., Nicholas, W. A. 2018. Benthic sediment surveys of inner Darwin harbour and shallow water areas in and around Bynoe Harbour (2017): GA0358 and GA0359 post-survey report. Geoscience Australia Record 2018/52. 135 pp.
Wentworth, C. K. 1922. A scale of grade and class terms for clastic sediments. Journal of Geology, 30, 377-392.
- Hierarchy level
- Dataset
Reference System Information
- Reference system identifier
- EPSG/WGS 84 / UTM zone 52S (EPSG:32752)
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/d36caee8-4b2d-4269-98fe-eb86212f489c
- Title
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GeoNetwork UUID
Type of resource
- Resource scope
- Dataset
- Name
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sediment grain size data, Darwin and Bynoe Harbours
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/126828
- Metadata linkage
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https://ecat.ga.gov.au/geonetwork/srv/eng//metadata/d36caee8-4b2d-4269-98fe-eb86212f489c
- Date info (Creation)
- 2019-02-08T03:51:39
- Date info (Revision)
- 2019-02-08T03:51:39
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 (Draft Schemas 2015)
- Edition date
- 2015-07-01T00:00:00
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, April 2015