High-energy reef and terrigenous sedimentation, Boulder Reef, Great Barrier Reef

Sediment and water flux were monitored at Boulder Reef, in the Northern Great Barrier Reef, before, during, and after the passage of Tropical Cyclone Dominic. Rainfall at Cooktown as a result of Dominic amounted to 430 mm in 3 days, this effecting a record discharge in the Endeavour River of nearly 50 000 megalitres/day. At Boulder Reef, conditions prior to Dominic of 10-20 knot winds effected average water velocities of 11 cm/s across the reef, which generated a substantial reef-derived sediment load with particulate organic material up to ten times greater than particulate inorganic carbon by weight. During the high-energy event, winds in excess of 50 knots generated water movements of up to 40 cm/s and sediment loads two to five times greater than before the event. In addition, the sediment contained a substantial terrestrial component (illite and kaolinite), probably originating from the Endeavour River. Three days after the passage of Dominic, water velocities across the reef were still rapid (up to 60 cm/s) and sediment loads still high, although now only reef-derived. However, further monitoring indicated a second pulse of terrigenous material reaching Boulder Reef four days after Dominic. Large amounts of reef-derived carbonate and organic material are lost daily from the system to the inter-reef areas. Conversely, large quantities of terrestrially derived clay are added to the reef every five years or so, in amounts within the range 135- 228 tonnes: this has probably occurred at this periodicity for the past 5000 years. Cores through the Holocene section confirmed that clay deposition has occurred throughout its growth.

Simple

Identification info

Date (Publication)
1983-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81149

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Bureau of Mineral Resources, Geology and Geophysics

 Canberra
Author

Davies, P.J.

 1
Author

Hughes, H.

 2
Name

BMR Journal of Australian Geology and Geophysics

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8:3:201-209

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Corp
Owner

Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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  • Geoscientific information

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N
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W


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Unknown

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Title

Product data repository: Various Formats

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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

  • GA Publication

  • Journal

Theme

  • marine

Keywords

  • QLD

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

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CC-BY

Edition

4.0

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http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified
Language
English
Character encoding
UTF8

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Commonwealth of Australia (Geoscience Australia)

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OnLine resource

Journal article (pdf)

Journal article (pdf)

Distribution format

  • pdf

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Unknown

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Non geographic dataset
Other

GA Publication

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Metadata constraints

Title

Australian Government Security ClassificationSystem

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

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

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/fae9173a-705a-71e4-e044-00144fdd4fa6

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

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Type of resource

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Document
Name

AGSO BMR Journal

Alternative metadata reference

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Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/81149

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-705a-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:10:04
Date info (Creation)
2014-06-03T00:00:00

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

 
 

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E
W


Keywords

marine

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