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    Sea ice temperature (°C) measured across multiple depths from 20 cm to 207.5 cm at (latitude: -77.775800, longitude: 166.312800): Related Publication: Richter ME, Leonard GH, Smith IJ, Langhorne PJ, Mahoney AR, Parry M. Accuracy and precision when deriving sea-ice thickness from thermistor strings: a comparison of methods. Journal of Glaciology. 2023;69(276):879-898. doi:10.1017/jog.2022.108

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    Sea ice temperature (°C) measured across 11 depths (57 cm, 78.5 cm, 84.5 cm, 87.5 cm, 96.5 cm, 105.5 cm, 108.5 cm, 114.5 cm, 117.5 cm, 120.5 cm, 129.5 cm) at (LATITUDE: -77.781700, LONGITUDE: 166.315300): Related Publication: Richter ME, Leonard GH, Smith IJ, Langhorne PJ, Mahoney AR, Parry M. Accuracy and precision when deriving sea-ice thickness from thermistor strings: a comparison of methods. Journal of Glaciology. 2023;69(276):879-898. doi:10.1017/jog.2022.108

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    Sea ice temperature (°C) measured across multiple depths at (LATITUDE: -77.792300, LONGITUDE: 166.514900). Related Publication: Richter ME, Leonard GH, Smith IJ, Langhorne PJ, Mahoney AR, Parry M. Accuracy and precision when deriving sea-ice thickness from thermistor strings: a comparison of methods. Journal of Glaciology. 2023;69(276):879-898. doi:10.1017/jog.2022.108 GET DATA: https://doi.org/10.1594/PANGAEA.880164

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    Sea ice temperature (°C) measured across multiple depths at (LATITUDE: -77.794900, LONGITUDE: 166.334700). Related Publication: Richter ME, Leonard GH, Smith IJ, Langhorne PJ, Mahoney AR, Parry M. Accuracy and precision when deriving sea-ice thickness from thermistor strings: a comparison of methods. Journal of Glaciology. 2023;69(276):879-898. doi:10.1017/jog.2022.108 GET DATA: https://doi.org/10.1594/PANGAEA.880165

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    This metadata record represents continuous year-round oceanographic observations in McMurdo Sound from temperature loggers attached to the Scott Base RO intake and a surface-mounted mooring timeseries. GET DATA: m.meredyth-young@antarcticanz.govt.nz

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    Ocean current speed and direction were recorded at 5-minute intervals at a nominal depth of 100 m in McMurdo Sound at 77.7667 °S, 165.2000 °E by an Aanderaa Seaguard single-point current meter. The dates covered by the ocean current observations are from 3-11-2017 06:35:02 UTC to 20-11-2017 22:55:02 UTC. Current speed is provided in units of cm/s. Current direction is provided in degree relative to true north and is the direction the current is flowing towards.

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    The thicknesses of sea ice and sub-ice platelet layer were measured at regular intervals on fast ice in McMurdo Sound, Antarctica in November and December of 2011. Thirty-metre cross-profiles were established at each site, and snow depths were measured at 0.5 m intervals along the transect lines with a metal ruler. A mean snow depth for each site was derived from these 120 measurements. Freeboard, sea ice thickness and sub-ice platelet layer thickness were recorded at five locations at each site - at the central crossing point and at the end points of each transect. The mean of these was then calculated and taken as representative of the site. Ice thicknesses were measured by using a tape measure with a brass T-anchor attached at the zero mark. This was deployed vertically through the drill-hole and allowed to rotate to a horizontal alignment when exiting the bottom of the drill-hole at the ice-ocean interface. From this position the anchor is slowly pulled upwards until some resistance is met and the first measurement is taken. This resistance is taken to mark the sub-ice platelet layer/ocean interface. The tape measure is then pulled harder, forcing the bar to pass through the sub-ice platelet layer until it sits flush against the sea ice/sub-ice platelet layer interface where a second measurement is taken. Measurement sites were about 5 km apart.

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    Acoustic volume backscatter measurements were made by an ASL Environmental Sciences Acoustic Zooplankton Fish Profiler (AZFP) operating at four-frequencies (125 kHz, 200 kHz, 455 kHz and 769 kHz). README: https://store.pangaea.de/Publications/Robinson-etal_2020/AZFP2016_README.pdf Further details are provided at: Frazer, E. K., Langhorne, P. J., Leonard, G. H., Robinson, N. J., & Schumayer, D. (2020). Observations of the size distribution of frazil ice in an Ice Shelf Water plume. Geophysical Research Letters, 47, e2020GL090498. https://doi.org/10.1029/2020GL090498

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    Acoustic volume backscatter measurements were made by an ASL Environmental Sciences Acoustic Zooplankton Fish Profiler (AZFP) operating at four-frequencies (125 kHz, 200 kHz, 455 kHz and 769 kHz). README: https://store.pangaea.de/Publications/Robinson-etal_2020/AZFP2017_README.pdf Further details are provided at: Frazer, E. K., Langhorne, P. J., Leonard, G. H., Robinson, N. J., & Schumayer, D. (2020). Observations of the size distribution of frazil ice in an Ice Shelf Water plume. Geophysical Research Letters, 47, e2020GL090498. https://doi.org/10.1029/2020GL090498

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    Ocean salinity was recorded at 10 second intervals by a Seabird Electronics SBE 37 microCAT CTD at a nominal depth of 100 m in McMurdo Sound at 77.6152 °S, 164.8821 °E. The dates covered by the salinity observations at 100 m depth are from 28-10-2016 06:43:11 UTC to 13-11-2016 21:59:51 UTC. The salinity is reported in units of practical salinity. Ocean temperature was recorded at 10 second intervals by a Seabird Electronics SBE 56 thermistor at a nominal depth of 75 m in McMurdo Sound at 77.6152 °S, 164.8821 °E. The dates covered by the temperature observations at 75 m depth are from 3-11-2017 08:26:01 UTC to 20-11-2017 23:00:01 UTC. The temperature is reported in units of °C in the ITS-90 temperature scale.