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Earth Science | Oceans | Ocean Optics | Fluorescence
200 record(s)
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This dataset comprises the phytoplankton abundance and biovolume estimates as part of a broader sampling program carried out at the Southern Ocean Time Series, a facility within the Integrated Marine Observing System (IMOS). The primary focus is sustained observing of ocean properties and processes important to climate, carbon cycling, and ocean productivity. Regular phytoplankton samples are collected at approximately 14 day intervals (exact intervals and seasonal coverage dependent on deployment length). The moorings are serviced annually, at which time the existing moorings are recovered and new moorings are deployed. Water samples from within the surface mixed-layer are collected at pre-programmed intervals using a Remote Access Sampler, in pairs about 1 hour apart. One sample in each pair is preserved for phytoplankton community composition by microscopy, and the other sample is preserved and used for accompanying chemical analysis of nutrients, total dissolved inorganic carbon (DIC) and alkalinity. Each sample is collected from within the surface mixed-layer at 32 m depth (2010 - 2017) or 5 m depth (2018-current) depending on the design of the mooring surface assembly and instrumentation. Typically a maximum of 24 samples are collected over an annual deployment cycle. The samples collected are analysed for: 1. Community composition / abundance (cells/L) 2. calculated biovolume (um3/L). Protocols for the phytoplankton time-series are described in Eriksen et al (2018), and the annual sample reports for each deployment. Data storage and access is planned to be interoperable with other national and international programs through the IMOS Infrastructure. Station metadata can be found through this resource. Data is available freely via the AODN portal: https://portal.aodn.org.au. As the taxonomic resolution of the data has changed over time, due to continual training, it is important that users refer to the change log tables included in your data download. These will provide information on the validity of the taxa, from what date we have been identifying certain taxa etc. Classification fields may be blank depending on the level to which that taxa has been identified, i.e. if only identified to family, genus and species will be blank.
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This record describes fluorescence data collected as part of the 1991-1993 Tasmanian Slope Trophodynamics Study undertaken by CSIRO Division of Fisheries. The data were obtained from an SeaTech fluorometer lowered through the water shortly after completing a CTD cast from which chlorophyll and productivity samples were taken, at a range of depths (surface to 1500 meters) on 4 cruises of FRV "Southern Surveyor" on three 60 km transects across the continental shelf to the south and south-east of Tasmania in July 1991 (cruise SS 02/91), February 1992 (cruise SS 01/92), November 1992 (cruise SS 04/92) and April 1993 (cruise SS 03/93).
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This dataset contains data collected from 24/2/97 to 24/8/98 in the Lower Reaches of the Huon Estuary, Tasmania. One day surveys were carried out on five occassions on the day preceding HES4, HES5, HES6, HES9 and HES10 (see Huon Estuary Study - Spatial Survey Data 1996-1998 for details of these surveys). Physical Snapshots Surveys 1(PS01) & 2(PS02) took the form of a number of rapidly deployed CTD's and underway data collection. For Physical Snapshots Surveys 3(PS03), 4(PSO4) & 5(PS05) only the underway system was deployed.
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This dataset contains the Underway (UWY) data collected on Linnaeus voyage LI2014_V04. Voyage Title: IMOS mooring deployment and Rottnest Reference Station Monitoring The voyage took place on the 19th March 2014 from Hillarys (WA) to the Perth Canyon and return to Hillarys (WA) to recover two moorings and deploy two IMOS CTDs. The Underway (=continuously recorded) dataset from this research voyage includes: NAV, Thermosalinograph (Seabird TSG 45) and fluorometer data. NAV data includes GPS (Global Positioning System) measurements of latitude, longitude, ship's direction and speed. Data are stored at 1 second intervals (NetCDF format) and both 10 second 5 minute intervals (.csv format). Additional information regarding this dataset is contained in the data processing report for this voyage.
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The Huon Estuary Study was undertaken by CSIRO Marine Research between 1996 and 1998. The Huon Estuary is in South Eastern Tasmania. This record references the data from the Physical Snapshot (PS) surveys. See the Documentation Link below in this record for an overview of all the surveys undertaken in this survey.The Physical Snapshot surveys were carried out on the day before a number of the Spatial (HES) surveys as follows: PS01 was undertaken directly before HES4 PS02 before HES5 PS03 before HES6 PS04 before HES9 and PS05 before HES10. These surveys were a combination of quickly deployed ctd's at a number of the Spatial Survey stations plus deployment of an underway data collecting system. For Physical Snapshots Surveys 3(PS03), 4(PSO4) & 5(PS05) only the underway system was deployed. From PS03 onwards data was collected by the underway system at nominally 0.5 and 1 m depths.
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The Huon Estuary Study was undertaken by CSIRO Marine Research between 1996 and 1998. The Huon Estuary is in South Eastern Tasmania. This record references the autonomous profilers which were deployed as part of the Huon Estuary Study. The profilers operated at two locations, Killala and Hideaway Bays. At both sites conductivity, temperature, fluorescence, underwater light, dissolved oxygen and par sensors were deployed as well as a wind sensor at Killala Bay. For a number of parameters the raw data was processed using calibration co-efficients and converted to engineering units. The processed profile data is stored as daily, monthly and also as a dataset for duration of the deployment.
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This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2014_E03. This is the first trial voyage for the RV Investigator departing Hobart on the 11th November and returning to Hobart on the 17th November 2014. CTD data is collected using a 12/24/36 bottle rosette which can include auxilliary instruments such as: ecotriplet, transmissometer and fluorometers (phytoplankton, oxygen flourescence and turbidity). CTD are sampled at specified stations (refer to map), the system can operate at a maximum depth of 6,000 metres. The 12 bottle carousel CTD is used for trace metal work. The CTD data for this voyage will not be processed. Processing may be arranged upon request.
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This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2015_V01 titled IMOS Southern Ocean time series automated moorings for climate and carbon cycle studies southwest of Tasmania. This was the first research voyage for the RV Investigator departing Hobart on the 21st March and returning to Hobart on the 30th March, 2015. Data for 3 deployments were acquired using the Seabird SBE911 CTD 21, fitted with 24 ten litre bottles on the rosette sampler. The Seabird SBE911 has dual conductivity and temperature sensors. The CTD was additionally fitted with SBE43 dissolved oxygen sensors, Fluorometer, Transmissometer and PAR sensors. These sensors are described in the processing report. The collected data was subsequently processed and archived within the CSIRO Oceans and Atmosphere (O&A) in Hobart. Additional information regarding this dataset may be contained in the Voyage Summary and the CTD Data Processing Report.
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This dataset contains the Underway (UWY) data collected on Linnaeus voyage LI2013_V25. Voyage Title: WAMSI Dredging Science Node: Theme 2/3.2 - Predicting and measuring the characteristics of sediment plumes due to dredging operation. The voyage took place between the 17-30th October 2013, from Hillarys (WA) along the coastline to Exmouth and returning to Hillarys. The Underway (=continuously recorded) dataset from this research voyage includes: NAV, Water Depth(m) and Thermosalinograph data. NAV data includes GPS (Global Positioning System) measurements of latitude, longitude, ship's direction and speed. Data are stored at 5 second intervals (NetCDF format) and 10 second, 1 minute and 5 minute intervals (.csv format). Additional information regarding this dataset is contained in the data processing report for this voyage.
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This dataset contains the Conductivity-Temperature-Depth (CTD) data collected using the towed profiling Bunyip/SeaSoar platform on Southern Surveyor voyage SS 08/2003. The voyage took place in the Indian Ocean off Western Australia between the 1st to 22nd October 2003. This dataset has been processed and archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart. Additional information regarding this dataset may be contained in the Voyage Summary and the Data Processing Report (as available). Note that the data is does not include QC flags (to be added).