S-band waveguide measurements of sea-ice samples ranging from 2.6 to 3.95 GHz during the SIPEX II voyage of the Aurora Australis, 2012

• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; EARTH SCIENCE > CRYOSPHERE > SEA ICE; SEA ICE > ICE TEMPERATURE; OCEANS > Waveguide; Permittivity; SIPEX; MR > MICROWAVE RADIOMETER; R/V AA > R/V Aurora Australis; AMD; AMD/AU; CEOS; ACE/CRC; OCEAN > SOUTHERN OCEAN; CONTINENT > ANTARCTICA; GEOGRAPHIC REGION > POLAR; Southern Ocean; Antarc*; Antarctica; aurora australis; Sea ice
• Online Access: https://researchdata.edu.au/s-band-waveguide-australis-2012/2816691

Progress Code: completed Statement: In some cases the horizontal or vertical core section broke during removal, or while attempting temperature measurements following the microwave measurements. This measurement method is experimental - an inversion and error analysis will need to be performed on this data to extract the complex permittivity tensor. Additionally the time required to reshape pieces may have changed their temperature and salinity from what they were in-situ. Analysis with other salinity and temperature cores from this area will provide insight as to how much change may have occurred, but has yet to be performed. Errors associated with hand-shaping each piece is not yet known. The samples were originally planned to be reshaped into parallelepipeds using a bandsaw, but the late change in the SIPEX II departure date prevented us from receiving this training. The few expeditioners aboard that were qualified to cut on the bandsaw had their own experiments during ice stations and were frequently unavailable to cut, so hand reshaping was developed as an alternative. This field will be updated when the result of this error is known. Samples taken before core number 76 were only measured in the principal E-field direction and did not have sample width measurements outside of the direction of wave propagation. Very early error analysis showed that both these measurement sets would be needed to quantify a potentially significant error. This dataset contains data relating to an experimental method in which sea-ice samples were measured in an S-band microwave waveguide. This was conducted as a part of the 2012 SIPEX 2 (Sea Ice Physics and Ecosystems EXperiment) marine science voyage. A specially designed waveguide apparatus was connected to an Agilent FieldFox Portable Network Analyzer. Small parallelopipeds (7 cm X 3 cm X 1.9 cm) of sea ice were cut with a hand saw in a specially designed jig which holds an initially cylindrical core. The samples were placed at the end of the waveguide, configured to ...