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Water quality measurements from the river plumes in the central Great Barrier Reef, associated with Cyclone Sadie (1994)

Created 12/03/2025

Updated 12/03/2025

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On the 4th February, 1994, water samples were collected from 10 stations along an offshore transect between the Brook Islands and the Mulgrave River. Cyclone Sadie caused a large rain depression over most of the north Queensland catchment area and sampling took place two days after the main flood peak had occurred. Samples were collected hourly, while the research vessel was steaming. Surface samples were collected at six stations, using a bucket. At a further four stations, samples were collected at four depths using a series of three Niskin bottles spaced over a depth profile for subsurface samples and a bucket to collect the surface samples. In situ temperatures were recorded using digital reversing thermometers attached to the Niskin bottles.Samples were analysed for chlorophyll, suspended solids, dissolved inorganic and organic nutrients and salinity.Water transparency was measured using a secchi disk and the presence of Trichodesmium spp. noted visually. Additional data collected at each station were cloud cover, wind speed, wind direction, tide and acoustic depth. This research was undertaken to examine changes in water quality in a flood plume resulting from increased river runoff into the Great Barrier Reef lagoon.

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Title Water quality measurements from the river plumes in the central Great Barrier Reef, associated with Cyclone Sadie (1994)
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/2e9291ea-f724-42d7-bd3f-22b1496b79f1
Contact Point
CSIRO Oceans & Atmosphere
adc@aims.gov.au
Reference Period 20/11/2017
Geospatial Coverage {"type": "Polygon", "coordinates": [[[146.281, -18.815379], [146.490183, -18.815379], [146.490183, -18.148], [146.281, -18.148], [146.281, -18.815379]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Water quality measurements from the river plumes in the central Great Barrier Reef, associated with Cyclone Sadie (1994)". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/water-quality-measurements-from-the-river-plumes-in-the-central-great-barrier-reef-associa-19941

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