Data

Secchi Disc data measured during a high rainfall event in Port Jackson, 20 August 2007

Australian Ocean Data Network
Hokuun, Katja ; Birch, Gavin, Dr
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=a2c6e560-67ce-11dc-b822-00188b4c0af8&rft.title=Secchi Disc data measured during a high rainfall event in Port Jackson, 20 August 2007&rft.identifier=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=a2c6e560-67ce-11dc-b822-00188b4c0af8&rft.description=The Sydney Harbour catchment area includes a number of different river systems which drain into the Port Jackson estuary. During high rainfall events the catchment areas behave differently to deliver contaminants into the Port Jackson estuary. Under conditions of high rainfall contaminants are delivered to areas very quickly as freshwater slides over the top of the denser more saline waters of the estuary. Secchi Disc samples were taken along the Port Jackson estuary over four days to determine the behaviour of the freshwater plume as it travels in a layer of freshwater to be flushed or flocculate out at some point in the estuary.Statement: A Secchi Disc was used to take the measurements of water clarity. The Secchi disc is a standardised water visibility estimate taken by lowering a white disc of about 30 cm diameter into the water and measuring the depth at which it becomes invisible. Data parameter: secchi disc depth (m).Statement: A Secchi Disk measures water clarity. Water clarity may be affected by three different factors -- algae, sediment and / or water color.&rft.creator=Hokuun, Katja &rft.creator=Birch, Gavin, Dr &rft.date=2007&rft.coverage=westlimit=151.244; southlimit=-33.87; eastlimit=151.259; northlimit=-33.85&rft.coverage=westlimit=151.244; southlimit=-33.87; eastlimit=151.259; northlimit=-33.85&rft_rights= http://creativecommons.org/licenses/by/2.5/au/&rft_rights=http://i.creativecommons.org/l/by/2.5/au/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 2.5 Australia License&rft_rights=http://creativecommons.org/international/au/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_rights=Creative Commons Attribution 2.5 Australia License http://creativecommons.org/licenses/by/2.5/au&rft_subject=oceans&rft_subject=SECCHI DEPTH&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN OPTICS&rft_subject=TOXIC CHEMICALS&rft_subject=TERRESTRIAL HYDROSPHERE&rft_subject=WATER QUALITY/WATER CHEMISTRY&rft_subject=secchi_depth_of_sea_water&rft.type=dataset&rft.language=English Access the data
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Brief description

The Sydney Harbour catchment area includes a number of different river systems which drain into the Port Jackson estuary. During high rainfall events the catchment areas behave differently to deliver contaminants into the Port Jackson estuary. Under conditions of high rainfall contaminants are delivered to areas very quickly as freshwater slides over the top of the denser more saline waters of the estuary. Secchi Disc samples were taken along the Port Jackson estuary over four days to determine the behaviour of the freshwater plume as it travels in a layer of freshwater to be flushed or flocculate out at some point in the estuary.

Lineage

Statement: A Secchi Disc was used to take the measurements of water clarity. The Secchi disc is a standardised water visibility estimate taken by lowering a white disc of about 30 cm diameter into the water and measuring the depth at which it becomes invisible.

Data parameter: secchi disc depth (m).
Statement: A Secchi Disk measures water clarity. Water clarity may be affected by three different factors -- algae, sediment and / or water color.

Notes

Credit
You, John
Purpose
To analyse water clarity data collected during a high precipitation event over the Sydney Harbour catchment in order to determine how the Port Jackson estuary behaves under these conditions.

Issued: 21 09 2007

Data time period: 2007-08-20 to 2007-08-20

This dataset is part of a larger collection

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151.259,-33.85 151.259,-33.87 151.244,-33.87 151.244,-33.85 151.259,-33.85

151.2515,-33.86

text: westlimit=151.244; southlimit=-33.87; eastlimit=151.259; northlimit=-33.85

Subjects
EARTH SCIENCE | OCEAN OPTICS | OCEANS | Secchi Depth | TERRESTRIAL HYDROSPHERE | Toxic Chemicals | WATER QUALITY/WATER CHEMISTRY | oceans | secchi_depth_of_sea_water |

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Other Information
(20Aug07_SecchiDisk.xls)

uri : https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/a2c6e560-67ce-11dc-b822-00188b4c0af8/attachments/20Aug07_SecchiDisk.xls

Identifiers
  • global : a2c6e560-67ce-11dc-b822-00188b4c0af8
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