Particle size spectra, laser optical plankton counter (LOPC) - data from the SIPEX II voyage of the Aurora Australis

This dataset contains vertical profiles of particles in the upper water column (60 m depth) at six sites. A laser optical plankton counter (LOPC) was deployed through a hole in the sea ice, or from the stern of the Aurora Australis, and lowered to 60 m, logging as it was lowered. The LOPC records pa...

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Bibliographic Details
Other Authors: SWADLING, KERRIE (hasPrincipalInvestigator), EVERETT, JASON (processor), Australian Antarctic Data Centre (publisher)
Format: Dataset
Language:unknown
Published: Australian Antarctic Data Centre
Subjects:
biota
oceans
PLANKTON
EARTH SCIENCE
BIOSPHERE
AQUATIC ECOSYSTEMS
SIPEX II
LOPC-PMS &gt
Laser Optical Particle Counter
R/V AA &gt
R/V Aurora Australis
GEOGRAPHIC REGION &gt
POLAR
OCEAN &gt
SOUTHERN OCEAN
Southern Ocean
aurora australis
Sea ice
Online Access:https://researchdata.ands.org.au/particle-size-spectra-aurora-australis/967234
https://doi.org/10.4225/15/5981595778cc2
https://data.aad.gov.au/metadata/records/AAS_4140_SIPEX_II_LOPC
http://nla.gov.au/nla.party-617536
Description
Summary:This dataset contains vertical profiles of particles in the upper water column (60 m depth) at six sites. A laser optical plankton counter (LOPC) was deployed through a hole in the sea ice, or from the stern of the Aurora Australis, and lowered to 60 m, logging as it was lowered. The LOPC records particles in the size range 100 um to 20 mm, though the small aperture (7 cm x 7 cm) means that the largest particles are probably only sampled rarely. For each site, the data are presented as normalised biomass for a series of equivalent spherical diameters (ESD). ESD is based on measurements of length and width of animals likely to be sampled via the LOPC (i.e. animals that are sampled at the same time with a traditional plankton net). The data were collected on the SIPEX II voyage of the Aurora Australis, from 14/9/2012 to 16/11/2012. Sites were all located in first year pack ice; the ship would nudge up to a floe and then samples of ice, zooplankton, etc. were collected directly by working on the floe. The LOPC was either deployed through a large hole in the pack ice, or it was deployed off the stern of the AA. Method of deployment did not really have an impact on the data collected, it was more a logistical decision based on conditions.

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