AndreaBozzo/ceres-open-data-index huggingface dataset:
Aurora Australis Voyage 3 2015/16 Track and Underway Data

On every voyage of the Aurora Australis, approximately 50 onboard sensors collect data on average every 10 seconds.  These data are known as the underway datasets.  The type of data collected include water and air temperature, wind speeds, ship speed and location, humidity, fluorescence, salinity and so on.  For the full list of available data types, see the website.
These data are broadcast "live" (every 30 minutes) back to Australia and are available via the Australian Oceanographic Data Centre's portal (see the provided link).  Once the ship returns to port, the data are then transferred to Australian Antarctic Division servers where they are then made available via the Marine Science Data Search system (see the provided URL).
This dataset contains the underway data collected during Voyage 3 (K-Axis) of the Aurora Australis Voyage in the 2015/16 season.
Purpose of voyage: Marine Science, Mawson Resupply, Davis Summer Retrieval
Leader: Mr. Lloyd Symons
Deputy Leader: Mr. Brett Free
Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).
This voyage carried out scientific work along the Kerguelen-Axis scientific area.  This voyage also had the misfortune to run aground in Horseshoe Harbour off Mawson Station during a blizzard.  Consequently many passengers were flown back to Hobart, and the ship eventually sailed back under its own power.

Tags: AMD, AMD/AU, CEOS, CONTINENT > ANTARCTICA, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > CONVECTION, ECHO SOUNDERS, GEOGRAPHIC REGION > POLAR, MARINE, METEOROLOGY, OCEAN > SOUTHERN OCEAN, R/V AA > R/V Aurora Australis, SHIPS
Organization: Australian Ocean Data Network
Aurora Australis Voyage 7 2003-04 Raw Data

This data represents the total collection of acoustic, underway and satellite data collected on voyage 7 of the Aurora Australis in the 2003-04 season.
For online access to the underway data for voyage 7 2003-04, see its specific metadata record, or the marine science database.
The Acoustics data (ADCP) are in SIMRAD EK64 format (binary), and the echoview software is required to read them. The Underway data are in ASCII format. The Satellite Images are in TERASCAN format, and TERASCAN software is required to read them.

Tags: ACOUSTIC DOPPLER CURRENT PROFILE, ADCP, ADCP > Acoustic Doppler Current Profiler, AMD, AMD/AU, AURORA AUSTRALIS, CEOS, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > CONVECTION, EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY, EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY, EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH, EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS, EARTH SCIENCE > OCEANS > OCEAN OPTICS > OCEAN COLOR, EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE, GEOGRAPHIC REGION > POLAR, OCEAN > SOUTHERN OCEAN, OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND, R/V AA > R/V Aurora Australis, RAW DATA, SATELLITE IMAGES, SATELLITES, SHIPS, SOUTHERN OCEAN, TERASCAN, UNDERWAY DATA
Organization: Australian Ocean Data Network
Subantarctic Zone photos of sediment trap samples

SAZ photos of sediment trap samples
Sediment traps are cones which intercept and store falling marine particles in collection cups. The particles consist of a range of material including phytoplankton, zooplankton, faecal pellets, and dust. Each trap collects a time series of samples. The sediment traps are from deep moorings in the Southern Ocean, typically at 47S, 54S, and 61S and at around 140 degrees East. Each mooring typically has 2-3 traps between 800m and 3800m below sea-level.
The samples are size fractionated into less than 1mm and greater than 1mm fractions using a 1mm sieve. Various chemical analyses and observations have been made on the less than 1mm fraction.
These are photos are of greater than 1mm fraction, mainly showing 'swimmers.'
Photos are mostly taken on the sieve, so the grid is 1mm for scale.
Sample identification is in the file name, and also in a label in the photo.
The file name format is:
Typical example s02_54_800_04.jpg
1) s02: s is for SAZ. Collection season number is first year of collection season. So s02 is from SAZ 2002-2003.
2) 54: Nominal latitude.
3) 800: Nominal depth, m.
4) 04: Cup number, typically 1-21 or 1-13, single digit numbers padded with a zero to help operating systems display files in order.
5) .jpg: All photos are in jpeg format
Some files have additional information at end, examples below:
* FP: faecal pellet
* begin and end: beginning and end of sieving process. Mostly to show faecal pellets at start that are rinsed through sieve.
This work was completed as part of ASAC project 1156 (ASAC_1156).  See also the metadata record 'Subantarctic Zone (SAZ) Sediment Trap Moorings' (SAZOTS).

Tags: ACE/CRC, AMD, AMD/AU, CAMERAS, CEOS, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > CNIDARIANS > JELLYFISHES, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > SEGMENTED WORMS (ANNELIDS), EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC, EARTH SCIENCE > OCEANS > MARINE SEDIMENTS, FAECAL PELLET, FISH, GEOGRAPHIC REGION > POLAR, LATITUDE, LONGITUDE, OCEAN > SOUTHERN OCEAN, PHOTOS, R/V AA > R/V Aurora Australis, SAZ, SEDIMENT TRAP, SEDIMENT TRAPS, SHIPS, SHRIMP, SOUTHERN OCEAN, SPECIES, SUBANTARCTIC ZONE
Organization: Australian Ocean Data Network
Adelie penguin occupancy survey of the Stanton Group, 2015

The dataset comprises Adelie penguin colony boundaries at three sites in the vicinity of Stanton Island. Boundaries were derived from oblique aerial photographs taken in the Stanton Island group. The aerial photographs were geo-referenced to AAT coastline polygon data and the boundaries of Adelie penguin colonies were digitised.
Please refer to the Seabird Conservation Team Data Sharing Policy for use, acknowledgement and availability of data prior to downloading data.

Tags: AERIAL PHOTOGRAPHS, AIRCRAFT, AMD, AMD/AU, CAMERAS, CEOS, COLONIES, CONTINENT > ANTARCTICA, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > PENGUINS, EARTH SCIENCE > CLIMATE INDICATORS > BIOSPHERIC INDICATORS > BREEDING PRODUCTIVITY, GEOGRAPHIC REGION > POLAR, OCEAN > SOUTHERN OCEAN
Organization: Australian Ocean Data Network
Acoustic depth soundings collected on Australian Antarctic Division voyages, 2012/13

The data processing was done by the Royal Australian Navy's (RAN) Deployable Geospatial Support Team (DGST) and was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office.
The dataset is titled HI534.
The data processed was collected on the following voyages:
2012/13 voyages MS, 1, 2 and 3
The data has not been through the verification process for use in charts.

Tags: AMD, AMD/AU, CEOS, EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY, EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY, EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH, ECHO SOUNDERS, GEOGRAPHIC REGION > POLAR, OCEAN > SOUTHERN OCEAN, R/V AA > R/V Aurora Australis, SHIPS, SOUNDING
Organization: Australian Ocean Data Network
Sea Ice Observations from the Akademic Fedorov (41st Russian Antarctic Expedition)

These data describe pack ice characteristics in the Antarctic sea ice zone.
These data are in the ASPeCt format.
National program:  Russia
Vessel:  Akademic Fedorov
Dates in ice:  29 May 1996 - 14 Jul 1996
Observers:  Unknown
Translation to ASPeCt data format:  Vladimir Smirnov
Summary of voyage track:
29/5  Ice edge at approx. 60S, 31W
29/5-3/6  Ice edge to Nololazarevskaya (12E)
5-13/6  Novolazarevskaya to Molodezhnaya (46E)
15-28/6  Molodezhnaya to Mirny (93E)
4-14/7  Mirny to ice edge at approx. 62S, 59E
The fields in this dataset are:
SEA ICE CONCENTRATION
SEA ICE FLOE SIZE
SEA ICE SNOW COVER
SEA ICE THICKNESS
SEA ICE TOPOGRAPHY
SEA ICE TYPE
RECORD
DATE
TIME
LATITUDE
LONGITUDE
OPEN WATER
TRACK
SNOW THICKNESS
SNOW TYPE
SEA TEMPERATURE
AIR TEMPERATURE
WIND VELOCITY
WIND DIRECTION
FILM COUNTER
FRAME COUNTER FOR FILM
VIDEO RECORDER COUNTER
VISIBILITY CODE
CLOUD
WEATHER CODE
COMMENTS

Tags: ACE/CRC, AIR TEMPERATURE, AMD, AMD/AU, ARCTIC, ASPECT > Antarctic Sea Ice Processes and Climate, CEOS, CLOUD, COMMENTS, CONTINENT > ANTARCTICA, DATE, EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS, EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE FLOES, EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE TYPES, EARTH SCIENCE > CRYOSPHERE > SEA ICE > PACK ICE, EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE CONCENTRATION, FILM COUNTER, FRAME COUNTER FOR FILM, GEOGRAPHIC REGION > POLAR, LATITUDE, LONGITUDE, OCEAN > ARCTIC OCEAN, OCEAN > SOUTHERN OCEAN, OPEN WATER, RECORD, SEA ICE CONCENTRATION, SEA ICE FLOE SIZE, SEA ICE SNOW COVER, SEA ICE THICKNESS, SEA ICE TOPOGRAPHY, SEA ICE TYPE, SEA TEMPERATURE, SHIPS, SNOW THICKNESS, SNOW TYPE, TIME, TRACK, VIDEO RECORDER COUNTER, VISIBILITY CODE, WEATHER CODE, WIND DIRECTION, WIND VELOCITY
Organization: Australian Ocean Data Network
Nella Dan: ADBEX III Cruise - Sea Ice Core Stratigraphy

During the Antarctic Division BIOMASS Experiment III (ADBEX III) cruise of the Nella Dan (Oct - Dec 1985), sea ice cores were drilled at 13 stations. Stratigraphy of the cores recorded, along with borehole temperatures. In addition to visual notes, photographs for each of the cores were taken - the negatives of these pictures are archived with the notes made.
Physical records are archived at the Australian Antarctic Division.

Tags: ACE/CRC, ADBEX III, AMD, AMD/AU, BIOMASS, CEOS, CONTINENT > ANTARCTICA, CORING DEVICES, EARTH SCIENCE > CRYOSPHERE > SEA ICE, EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW STRATIGRAPHY, EARTH SCIENCE > OCEANS > SEA ICE, GEOGRAPHIC REGION > POLAR, OCEAN > SOUTHERN OCEAN, SHIPS
Organization: Australian Ocean Data Network
Aurora Australis Voyage 3 2014/15 Track and Underway Data

On every voyage of the Aurora Australis, approximately 50 onboard sensors collect data on average every 10 seconds.  These data are known as the underway datasets.  The type of data collected include water and air temperature, wind speeds, ship speed and location, humidity, fluorescence, salinity and so on.  For the full list of available data types, see the website.
These data are broadcast "live" (every 30 minutes) back to Australia and are available via the Australian Oceanographic Data Centre's portal (see the provided link).  Once the ship returns to port, the data are then transferred to Australian Antarctic Division servers where they are then made available via the Marine Science Data Search system (see the provided URL).
This dataset contains the underway data collected during Voyage 3 of the Aurora Australis Voyage in the 2014/15 season.
Purpose of voyage: Mawson Resupply, Davis summer retrieval
Leader: Mr. Andy Cianchi
Deputy Leader: Mr. Simon Langdon
Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).

Tags: AMD, AMD/AU, CEOS, CONTINENT > ANTARCTICA, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > CONVECTION, ECHO SOUNDERS, GEOGRAPHIC REGION > POLAR, MARINE, METEOROLOGY, OCEAN > SOUTHERN OCEAN, R/V AA > R/V Aurora Australis, SHIPS
Organization: Australian Ocean Data Network
Time Trial 1 M HCl extraction data for the Windmill Islands marine sediments

These results are for the time trial extraction of HCl.
See also the metadata records for the 0.5 and 4 hour extractions of HCl.
A regional survey of potential contaminants in marine or estuarine sediments is often one of the first steps in a post-disturbance environmental impact assessment. Of the many different chemical extraction or digestion procedures that have been proposed to quantify metal contamination, partial acid extractions are probably the best overall compromise between selectivity, sensitivity, precision, cost and expediency.  The extent to which measured metal concentrations relate to the anthropogenic fraction that is bioavailable is contentious, but is one of the desired outcomes of an assessment or prediction of biological impact.  As part of a regional survey of metal contamination associated with Australia's past waste management activities in Antarctica, we wanted to identify an acid type and extraction protocol that would allow a reasonable definition of the anthropogenic bioavailable fraction for a large number of samples.  From a kinetic study of the 1 M HCl extraction of two certified Certified Reference Materials (MESS-2 and PACS-2) and two Antarctic marine sediments, we concluded that a 4 hour extraction time allows the equilibrium dissolution of relatively labile metal contaminants, but does not favour the extraction of natural geogenic metals.  In a regional survey of 88 marine samples from the Casey Station area of East Antarctica, the 4 h extraction procedure correlated best with biological data, and most clearly identified those sediments thought to be contaminated by runoff from abandoned waste disposal sites.  Most importantly the 4 hour extraction provided better definition of the low to moderately contaminated locations by picking up small differences in anthropogenic metal concentrations.  For the purposes of inter-regional comparison, we recommend a 4 hour 1 M HCl acid extraction as a standard method for assessing metal contamination in Antarctica.
The fields in this dataset are
Concentration
Extraction Time
Antimony
Arsenic
Cadmium
Chromium
Copper
Iron
Lead
Manganese
Nickel
Silver
Tin
Zinc

Tags: AMD, AMD/AU, ANTIMONY, ARSENIC, BIOAVAILABLE METALS, CADMIUM, CEOS, CHROMIUM, CONCENTRATION, CONTINENT > ANTARCTICA > Windmill Islands, COPPER, CORING DEVICES, EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > HEAVY METALS CONCENTRATION, EARTH SCIENCE > OCEANS > MARINE SEDIMENTS, EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT CHEMISTRY, GEOGRAPHIC REGION > POLAR, IRON, KINETICS, LABORATORY, LEAD, MANGANESE, MESS, MULTIVARIATE ANALYSIS, NICKEL, PACS, SILVER, TIME, TIN, WINDMILL ISLANDS, ZINC
Organization: Australian Ocean Data Network
Statistics on ornithological (bird) data collected from Heard Island in 1950-1951

The download file contains a scanned copy of correspondence, the report, and statistics from data collected on birds from Heard Island in approximately 1951 (the report is dated May 1951, so data collection must have occurred before this).
The original documents were not in the best condition, so unfortunately some of the scans are difficult to read.
Taken from part of the report:
For Heard Island birds, measurements on females, fresh and dry, and males, fresh and dry, were generally available.  The data were therefore submitted to an analysis of variance (2x2 non-orthagonal treatment, interaction non-significant) to test for differences between the classifications.
When the difference between members of a classification was found to be non-significant, the distinction was disregarded and new means and variances were worked out, combining the results from both sub-classifications.
For example, if condition (wet or dry) was found to be non-significant, means for male and female were computed as if no sub-division into fresh and dry existed, and a pooled common variance was obtained from the variances within sex classifications.
Similarly, if neither male-female nor fresh-dry differences were significant, a grand mean for the island was computed, and the variance of teh whole set of data was taken to apply.  This mean has been quoted as appropriate to all four categories, the coefficient of variation and the standard error of the mean being similarly quoted as the same for each sub-classification.
Note has been made of the number of observations, (n), on which the mean is based, and the number of degrees of freedom, (v), appropriate to the estimate of the standard deviation.
One further point may be mentioned here.  Frequently, the dimensions of individual birds have been given without classification into male and female.  It has been possible to utilise these measurements in the general analysis only when the sex-difference was not significant.

Tags: AMD, AMD/AU, Birds, CEOS, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > ALBATROSSES/PETRELS AND AL, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > PENGUINS, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > WADERS/GULLS/AUKS AND ALLI, EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > INDIGENOUS/NATIV, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ISLANDS, FIELD SURVEYS, GEOGRAPHIC REGION > POLAR, Heard Island, Measurements, OCEAN > SOUTHERN OCEAN, OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS, Statistics, VISUAL OBSERVATIONS
Organization: Australian Ocean Data Network
Aurora Australis Voyage 1 2010/11 Track and Underway Data

On every voyage of the Aurora Australis, approximately 50 onboard sensors collect data on average every 10 seconds.  These data are known as the underway datasets.  The type of data collected include water and air temperature, wind speeds, ship speed and location, humidity, fluorescence, salinity and so on.  For the full list of available data types, see the website.
These data are broadcast "live" (every 30 minutes) back to Australia and are available via the Australian Oceanographic Data Centre's portal (see the provided link).  Once the ship returns to port, the data are then transferred to Australian Antarctic Division servers where they are then made available via the Marine Science Data Search system (see the provided URL).
This dataset contains the underway data collected during Voyage 1 of the Aurora Australis Voyage in the 2010/11 season.
Voyage Objectives: Davis Resupply and Changeover.
Leader: Dr. Karin Beaumont
Deputy Leader: Miss. Sharon Labudda
VM Trainee: Mr. Lance Bagster
Underway (meteorological) data are available online via the Australian Antarctic Division Data Centre web page (or via the Related URL section).

Tags: AMD, AMD/AU, CEOS, CONTINENT > ANTARCTICA, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > WIND DYNAMICS > CONVECTION, ECHO SOUNDERS, GEOGRAPHIC REGION > POLAR, MARINE, METEOROLOGY, OCEAN > SOUTHERN OCEAN, R/V AA > R/V Aurora Australis, SHIPS
Organization: Australian Ocean Data Network
Abundances of broad benthic functional groups in the CEAMARC region 2007/08

Derived dataset from the forward facing still-images collected during the benthic trawls of the 2007/08 CEAMARC voyage (raw data-set here: https://data.aad.gov.au/metadata/records/CEAMARC_CASO_200708_V3_IMAGES). All fauna in the bottom third of each image was scored to the lowest taxonomic resolution possible, and operational taxonomic units (OTUs) were aggregated by feeding type afterwards. The images originate from 32 transects, but were split by their lon-lat-position within a spatial grid of environmental variables into 41 sites. 
This dataset contains: 
- the mean longitude of all images aggregated per site. 
- the mean latitude of all images aggregated per site. 
- the number of images scored per site - the aggregated abundances (given in %-cover) for three main benthic groups (SF=Suspension Feeder, DF=Deposit Feeder, PR=Predator). 
- number of OTUs observed per benthic group per site.
- the total number of OTUs observed per site.

Tags: AMD, AMD/AU, Benthic Trawl, CAMERAS, CEAMARC, CEOS, CONTINENT > ANTARCTICA, EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC, GEOGRAPHIC REGION > POLAR, OCEAN > SOUTHERN OCEAN > George V Shelf, OCEAN > SOUTHERN OCEAN > Mertz Glacier, R/V AA > R/V Aurora Australis, SHIPS, TRAWL
Organization: Australian Ocean Data Network
Chlorin concentrations measured in sediment samples collected during the IN2017-V01 voyage of the RV Investigator

Sediment cores were collected from the East Antarctic margin, aboard the Australian Marine National Facility R/V Investigator, during the IN2017_V01 voyage from January 14th to March 5th 2017 (Armand et al., 2018). This marine geoscience expedition, named the “Sabrina Sea Floor Survey”, focused notably on studying the interactions of the Totten Glacier with the Southern Ocean through multiple glacial cycles. The cores were collected using a multi-corer (MC) and a Kasten corer (KC). The MC were sliced every centimetre, wrapped up in plastic bags, and stored in the fridge. The KC was sub-sampled using a u-channel; and sliced every centimetre once back the home laboratory (IMAS, UTAS, Hobart, Australia).
About 200 mg of sediment were dried in an oven at 40°C, ground using a pestle and a mortar and weighed into centrifuge tube. Chlorin (degradation products of chlorophyll-a) was extracted by sonication with acetone (90%; HPLC grade) following Schubert et al., (2005). Sample fluorescence was measured in triplicate by spectrofluorometry, at the excitation wavelength of 428 nm and the emission wavelength of 671 nm. 
The chlorin concentration was measured as followed:
[chlorin] = F/C x 0.000015 / (S/1000)
Where [chlorin] is the chlorin concentration in µg/g; F is the averaged fluorimetry intensity; C is the spectrofluorometer constant 1287.9; and S is the sediment weight in mg.
References
Armand, L. K., O’Brien, P. E., Armbrecht, L., Baker, H., Caburlotto, A., Connell, T., … Young, A. (2018).  Interactions of the Totten Glacier with the Southern Ocean through multiple glacial cycles (IN2017-V01): Post-survey report. ANU Research Publications, (March). https://doi.org/http://dx.doi.org/10.4225/13/5acea64c48693
Schubert, C. J., Niggemann, J., Klockgether, G., and Ferdelman, T. G. (2005). Chlorin Index: A new parameter for organic matter freshness in sediments. Geochemistry, Geophysics, Geosystems, 6(3). https://doi.org/10.1029/2004GC000837

Tags: ACE/CRC, AMD, AMD/AU, CEOS, CHLORIN, CONTINENT > ANTARCTICA > WILKES LAND, EARTH SCIENCE > OCEANS > MARINE SEDIMENTS, EARTH SCIENCE > OCEANS > MARINE SEDIMENTS > SEDIMENT CHEMISTRY, EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OCEAN TRACERS, GEOGRAPHIC REGION > POLAR, LABORATORY, OCEAN > SOUTHERN OCEAN, PALEO-PRODUCTIVITY, RV INVESTIGATOR, SEDIMENT CORERS, SFM > Spectrofluorometer, SHIPS
Organization: Australian Ocean Data Network