From Australian Oceans Data Network
JSON RDF ISO19115-3 XML

Cape Evans sea ice physical and biological properties

Created 13/03/2025

Updated 13/03/2025

JSON RDF ISO19115-3 XML

Fast ice was sampled roughly every second day over a 4-week period (November 2019) at a coastal site just off Cape Evans (McMurdo Sound). Ice cores were collected to determine vertical profiles of temperature, salinity, as well as the chlorophyll-a concentration in the lowermost 10 cm (two times 5-cm sections) of the ice cores. Measurements also included snow thickness, ice thickness and sea-ice freeboard levels. The data were collected as part of AAS 4546 and contribute to a larger NZ-led project, Antarctica New Zealand Event KS043, led by Dr Andrew Martin (Victoria University Wellington). Ice cores were sampled from the same 2m2 area using a Kovacs Mark II ice corer (9 cm internal diameter) powered with an electric drill. Snow thickness was measured with a ruler before sampling, and sea ice thickness and freeboard measurements were taken from the resulting ice core holes. Sea ice temperatures were measured with a Testotherm720 thermometer (accuracy 0.2 °C immediately after ice core retrieval from small holes drilled in the core at 5 – 10 cm intervals. Thereafter we sectioned the core in 0.05 to 0.15 m sections using a stainless steel saw. Ice core sections were placed in Milli-Q water washed polyethylene (PE) containers and melted at 4 °C in the dark within 24 to 36 hours after sampling. Ice bulk salinity was determined on the melted samples with a calibrated conductivity meter. Sub-samples of known volume were subsequently filtered onto Whatman GF/F filters and stored frozen (liquid nitrogen) until extraction with acetone for 24 hours at 4 °C in the dark and determination of the chlorophyll a (Chl a) concentration with a Turner Designs 10AU fluorometer according to Arar and Collins (1997, EPA Method 445.0). Chl a is reported in µg l-1 melted sea ice.

Files and APIs

Tags

Additional Info

Field Value
Title Cape Evans sea ice physical and biological properties
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/a43e258f-5cd2-4f4c-82a8-ed19dd5f8f5f
Contact Point
CSIRO Oceans & Atmosphere
metadata@aad.gov.au
Reference Period 11/11/2019 - 26/11/2019
Geospatial Coverage {"type": "Polygon", "coordinates": [[[165.0, -78.0], [166.0, -78.0], [166.0, -77.0], [165.0, -77.0], [165.0, -78.0]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Cape Evans sea ice physical and biological properties". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/cape-evans-sea-ice-physical-and-biological-properties

Original dataset
Dataset copies

No duplicate datasets found.