79234cb5-401a-48de-9d58-0f65b881fb7a urn:uuid University of Otago greg.leonard@otago.ac.nz 2026-03-31T22:42:45.613Z 2023-08-13T23:56:24 ISO 19115-1 2018 https://antcat.antarcticanz.govt.nz/geonetwork/srv/api/records/79234cb5-401a-48de-9d58-0f65b881fb7a Snow, Sea Ice, Sub Ice Platelet Layer, and Freeboard Measurements of Landfast Sea Ice in McMurdo Sound, 2019-Present 2023-08-14T17:14:53 2023-08-14T17:14:54 A semi-autonomous sea ice monitoring station (SIMS) was deployed to record ice temperature profiles and snow depths throughout the winter to late spring portion of the sea ice cover's growth season. These data were used to quantify the factors that govern the rate at which the sea ice grows. These factors include the local air temperature, vertical temperature gradient in the sea ice, the thickness of the overlying snow cover and the properties of the water column at the ice / water interface. The ice temperature profiles were recorded by a custom-built temperature probe designed by the University of Otago. The Otago thermistor probe consisted of twenty thermistors contained within a ~ 2.5 m long, 10 mm diameter stainless steel tube. The spacing of the thermistors in the probe was variable. This dataset provides information on the growth of the landfast sea ice and how much of this growth was due to heat loss to the atmosphere vs heat loss to the ocean. SIMS Locations: 2022-2023 Season (-77.8615, 166.7664) 2023-2024 Season (-77.861608, 166.765767) 2024-2025 Season (-77.88599167, 166.68752333) 2025-2026 Season (-77.868009, 166.648457) Sea ice salinity and fabric cores were collected to understand sea ice growth rates, and indicate the different types of landfast sea ice (e.g. columnar versus incorporated platelet) and to determine their relative vertical positions with the sea ice cover. Sea ice, sub ice platelet layer, snow and freeboard measurements were used to validate ice thicknesses determined by analysing the sea ice temperature profiles collected by the SIMS. Snow depths were measured with a Campbell Scientific ultrasonic sensor (SR50). Sea water samples are taken opportunistically to measure isotopic fractionation. VIEW DATA: https://seaice.otago.ac.nz/ice-temp-graph/contour/ Smith, I.J. inga.smith@otago.ac.nz ORCid Leonard, G. greg.leonard@otago.ac.nz ORCid University of Otago greg.leonard@otago.ac.nz oceans 166.7236 166.8091 -77.8704 -77.8525 -77.8615 166.7664 -77.861608 166.765767 -77.88599167000001 166.68752333 -77.868009 166.648457 2019-11-01T00:00:00 2023-08-14T12:03:49 https://antcat.antarcticanz.govt.nz:/geonetwork/srv/api/records/79234cb5-401a-48de-9d58-0f65b881fb7a/attachments/balance_station.png Credit: Greg Leonard INSTALLATION K891A SEA ICE WATER TEMPERATURE CONDUCTIVITY ICE TEMPERATURE SNOW DEPTH ICE DEPTH/THICKNESS FREEBOARD GCMD Earth Science and Earth Science Services Keywords 2025-07-10 2025-07-10 geonetwork.thesaurus.external.theme.ardc-curated_gcmd-sciencekeywords_20-2-2024-12-17 GCMD Earth Science and Earth Science Services Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords sciencekeywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords Sea Ice Mass Balance Station OCEAN PLATFORMS GCMD Platform/Sources Keywords 2025-07-10 2025-07-10 geonetwork.thesaurus.external.platform.ardc-curated_gcmd-platforms_20-2-2024-12-17 GCMD Platform/Sources Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms platforms https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms ICE AUGERS Thermistors EMIS ULTRASONIC DEPTH GAUGE GCMD Instrument/Sensors Keywords 2025-07-10 2025-07-10 geonetwork.thesaurus.external.instrument.ardc-curated_gcmd-instruments_20-2-2024-12-19 GCMD Instrument/Sensors Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments instruments https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments ANTARCTICA GCMD Locations Keywords 2025-07-10 2025-07-10 geonetwork.thesaurus.external.place.ardc-curated_gcmd-locations_20-2-2024-12-13(1) GCMD Locations Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations locations https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations CC BY-SA Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) https://creativecommons.org/licenses/by-sa/4.0/ https Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Human readable summary of CC BY-SA Creative Commons Attribution ShareAlike 4