Brief description
This record contains data collected on the RV Southern Surveyor, in the Indian ocean during September 2012. Samples were collected between Fremantle and Darwin. The data can be used for Ocean Colour sensor validation. Parameters measured are the concentration of chlorophyll and carotenoid pigments and retrieved chlorophyll a estimate, and the absorption coefficient for particulate (a/p) and detrital or non-algal (a/d) components of the water column. A total of 9 stations were sampled.Lineage
Progress Code: completedThe extracts were centrifuged to remove the filter paper and then filtered through a 0.2 µm membrane filter (Whatman, anatope) prior to analysis by HPLC using a Waters Alliance high performance liquid chromatography system, comprising a 2695XE separations module with column heater and
refrigerated autosampler and a 2996 photo-diode array detector. Immediately prior to injection the sample extract was mixed with a buffer solution (90:10 28 mM tetrabutyl ammonium acetate, pH 6.5 : methanol) within the sample loop. Pigments were separated using a Zorbax Eclipse XDB-C8 stainless steel 150 mm x 4.6 mm ID column with 3.5 µm particle size (Agilent Technologies) with gradient elution as described in Van Heukelem and Thomas (2001). The separated pigments were detected at 436 nm and identified against standard spectra using Waters Empower software. Concentrations of pigments were determined from standards (Sigma, USA or DHI, Denmark). Spectral absorption 4 litres of sample water was filtered through a 25 mm glass fibre filter (Whatman GF/F) and the filter then stored flat in liquid nitrogen until analysis. Optical density spectra for total particulate matter were obtained using a GBC 916 UV/VIS dual beam spectrophotometer equipped with an integrating sphere.
Notes
CreditThis voyage was a collaboration between CSIRO and the University of Western Australia
Eric Raes (CSIRO O&A
Floreat)
Lesley Clementson (CSIRO O&A
Hobart)
Data time period: 2012-09-07 to 2012-09-13
text: westlimit=114.265; southlimit=-30.93; eastlimit=122.291; northlimit=-14.792
text: uplimit=-6; downlimit=-6
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Data also available via IMOS and AODN portal (Data Link)
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Marine National Facility (Documentation Link)
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This work is licensed under a Creative Commons Attribution 4.0 International License (Documentation Link)
- Local : Anzlic Identifier: ANZCW0306014640
- Local : Marlin Record Number: 14640
- global : 26948eeb-7db7-3d25-e053-08114f8c3c5b