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EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE

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  • At each CTD station the Fast Repetition Rate Fluorometer (FRRF) was carried out onto the trawl deck and shackled (+ cable tie) to the winch cable. When the crew in the aft control room were ready the PAR (Photosynthetically Active Radiation) cap was removed and the FRRF activated with the magnet. It was deployed at a rate of 0.3m/sec to 10m, stopped for 30sec, then the descent was continued to 100m at same rate where it was stopped for another 30 sec. The FRRF was then brought back up at 0.3m/sec to deck. Once on deck the FRRF was turned off, it was hosed down with hot fresh water and the PAR cap replaced. Underway data were collected from the flow-through system in the lab on all South/North transects. West to East legs were not surveyed. The FRRF data were downloaded after every Vertical Drop and at the end of the Underway legs. The post-processing and analysis of data will be carried out after the voyage. The Final dataset is in the form of a Binary file for each drop and Underway leg. This work was completed as part of ASAC projects 2655 and 2679 (ASAC_2655, ASAC_2679).

  • Processed CTD instrument data - Corrected fluorescence profiles at the Southern Kerguelen Plateau, Indian Sector of the Southern Ocean. The fluorometer was calibrated through the regression of burst measurements against in situ chlorophyll a measured at the same depths and sites using high performance liquid chromatography (Wright et al. 2010). Zero chlorophyll a reference points were included in the regression and were obtained through averaging fluorometry data over 200-300 m bins. The resulting linear equation used to convert flourometry data was: chlorophyll = 0.262*fluorescence + 0.101. Column measurements (µg L-1) and integrated data (0-150 m, mg m-2) for each CTD station are provided.

  • This dataset contains the underway data collected during the Polar Bird Voyage 2 1998-99. This voyage visited Mawson, Prydz Bay, Casey and Macquarie Island, departing from and returning to Hobart. Underway data were logged from a fluorometer and thermosalinograph and are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL given below). For further information, see the Marine Science Support Voyage Report at the Related URL below.

  • FRRF deployments were conducted at 22 sites in conjunction with ship stop times when the CTD was deployed. See event log for locations. Some underway FRRF sampling was conducted on the return voyage. This work was conducted as part of the VMS (Voyage Marine Science) voyage of the Aurora Australis in the 2010-2011 season. A report providing further details about the FRRF work is available as part of the download file. The download file also contains a word document (also included in the download file for metadata record ASAC_1307) explaining the data columns in the excel spreadsheets.

  • This dataset contains the underway data collected during the Aurora Australis Voyage 6 (STAY) 1989-99. This voyage visited Mawson, Davis, Casey and Macquarie Island, departing from Fremantle and returning to Hobart. Underway (meteorological, fluorometer, thermosalinograph and bathymetric) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL given below). For further information, see the Marine Science Support Data Quality Report at the Related URL section.

  • Bio-optical measurements (radiometry, spectral backscatter, attenuation, absorption) for particle and phytoplankton characterisation acquired during Australian Marine National Facility RV Investigator voyage IN2016_V01. The biooptical package consisted of SeaBird 19plus CTD, Satlantic HyperOCR upwelling radiance and downwelling irradiance sensors, WetLabs ac-9, HobiLabs Hydroscat-6. At selected stations the bio-optical package was lowered to the depth of 240 m (or 20 m above the sea bottom if the depth was lower than 260 m) at 20 m/minute. The radiometric measurements were taken only during the day. Parameters measured: SeaBird CTD (4 Hz frequency): - Temperature - Salinity - Pressure - PAR - Fluorescence - Oxygen Satlantic HyperOCR: - Upwelling radiance (Lu) - spectral - Downwelling irradiance (Ed) – spectral - Pressure HobiLabs Hydroscat: - Backscattering coefficient at 6 wavelengths (442, 488, 550, 589, 676, 850 nm) - Fluorescence (550, 676 nm) - Pressure WetLabs ac-9 (2 Hz frequency) - Light absorption coefficient at 9 wavelengths (412, 440, 488, 510, 532, 555, 650, 676, 715 nm) - Light attenuation coefficient at 9 wavelengths (412, 440, 488, 510, 532, 555, 650, 676, 715 nm) At some stations transmissometer data at 650 nm using the Wetlabs c-Star were collected. Data type product(s) created: raw and calibrated data files were created on board, processed and quality controlled files (.dat and/or .csv) will be available by the end of 2016. Owner of instrument: CSIRO Units: CTD data: units given in the header Hydroscat data: bbp_HEOBI_all: all bbp in m^-1, slope unitless Calibrated: depth in m, all bb in m^-1,all betabb sr^-1 m^-1 Radiometers: all Ed uW/cm^2/nm All Lu uW/cm^2/nm/sr Depth is always given in meters. See the metadata file in the download for more information.

  • This dataset contains the underway data from Voyage 4 1991-92 of the Aurora Australis. This was a non-marine science voyage that visited Mawson and Davis, departing from and returning to Hobart. Underway data have not been quality checked.

  • This dataset contains the underway data collected during the Aurora Australis Voyage 8 2001-02. This voyage visited Macquarie Island, departing from and returning to Hobart. Underway data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section). For further information, see the Marine Science Support Data Quality Report at the Related URL section.

  • This dataset contains the underway data collected during the Aurora Australis Voyage 7 2001-02. This voyage carried out marine science activities associated with the AMISOR project in the Prydz Bay region. It also visited Davis and Mawson prior to returning to Hobart. Underway data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section). For further information, see the Marine Science Support Data Quality Report at the Related URL section.

  • This dataset contains the underway data collected during the Aurora Australis Voyage 2 2001-02. This voyage went to Casey and Macquarie Island, leaving from and returning to Hobart. Underway (meteorological, fluorometer and thermosalinograph) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL given below). For further information, see the Marine Science Support Data Quality Report at the Related URL below.