From Australian Oceans Data Network
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Derwent Estuary water sampling (KSA224 assessment 2025)

Created 28/09/2025

Updated 28/09/2025

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The aim of this trip was to investigate the salt wedge of the Derwent estuary, looking at the different properties along and across the estuary. This was achieved by examining; temperature, salinity, chlorophyll-a concentration, nutrients (including nitrate, ammonia, phosphate and silicate), pressure, turbidity, fluorescence, dissolved oxygen and pH. Sampling took place in the morning, in sunny, relatively calm conditions with the low tide on the sampling day at approximately 11:04 am. Two transects were used, with three different locations tested along the estuary and four tested across, at the approximate locations: (-42.94014, 147.38385), (-42.96321, 147.57525), (-42.98388, 147.37083), (-42.9795, 147.336), (-42.9744, 147.3585), (-42.97594, 147.36394) and (-42.97616, 147.38914). Sampling consisted of CTD sensor measurements, a plankton net tow, Secchi disk measurements, and a collection of water samples for analysis.

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Additional Info

Field Value
Title Derwent Estuary water sampling (KSA224 assessment 2025)
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4887d8d3-35ca-48c3-b389-c639fa970d7a
Contact Point
Australian Ocean Data Network
zoew11@utas.edu.au
Reference Period 27/03/2025 - 27/03/2025
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        147.325,
        -43.0
      ],
      [
        147.425,
        -43.0
      ],
      [
        147.425,
        -42.925
      ],
      [
        147.325,
        -42.925
      ],
      [
        147.325,
        -43.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Derwent Estuary water sampling (KSA224 assessment 2025)". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/derwent-estuary-water-sampling-ksa224-assessment-2025