faf86e78-efe7-4ae6-a841-809b3571abd6 urn:uuid Antarctica New Zealand adminteam@antarcticanz.govt.nz 2024-07-16T05:40:57.954Z 2024-05-20T02:22:31 ISO 19115-1 2018 https://antcat.antarcticanz.govt.nz/geonetwork/srv/api/records/faf86e78-efe7-4ae6-a841-809b3571abd6 Oceanographic Profiling (Conductivity, Temperature, Pressure) at Kamb Ice Stream (KIS3), West Antarctica, 2023 2024-06-19T10:09:05 2024-06-19T10:09:05 CTD casts were performed at the Kamb Ice Stream site 3 borehole (-82.6285, -156.3046). These data target a major subglacial outlet river emerging from beneath the Kamb Ice Stream. These data were used to determine both the role of water beneath the ice sheets and the ice-ocean interactions that take place once this water emerges into the ice shelf cavity. Four instruments were used for oceanographic profiling: two RBR Concerto CTDs that measure conductivity, temperature, and pressure, and two RBR Duets that measure temperature and pressure. The inductive salinity cells in the Concerto profilers were positioned at least 15 cm away from conductive material except during CTD casts 3 and 4, when the Concertos were placed inside the metal frames. A standard profiling technique was used for each CTD profile, with slow deployment through the upper part of the ice hole and the base of the ice shelf and descent to within ~3 m of the seafloor to allow equipment to equilibrate for a minimum of 15 minutes. To avoid the winch cable freezing into the ice hole, the cable was moved whenever the instruments were stationary for more than ~30 seconds to 1 minute. This was done either by nudging the winch up and down a very small amount or by manually leaning on the exposed winch cable between the pulley mast and the winch. After remaining at the seafloor for 15 minutes, the instruments were raised up into the base of the ice shelf briefly, and then lowered again to near the seafloor. This procedure was repeated using varying speeds until the end of the cast (‘jojo-ing’), attempting to not exceed a speed of ~0.5 m/s. The final CTD cast was operated for 24-hours to capture a full tidal cycle GET DATA: craig.stevens@niwa.co.nz Stevens, C. craig.stevens@niwa.co.nz ORCid New Zealand Antarctic Science Platform SciencePlatform@antarcticanz.govt.nz oceans -156.3696 -156.2396 -82.6375 -82.6195 -82.62849999999989 -156.3046 2023-12-26T00:00:00 2023-12-27T00:00:00 https://antcat.antarcticanz.govt.nz:/geonetwork/srv/api/records/faf86e78-efe7-4ae6-a841-809b3571abd6/attachments/asp_crop.png New Zealand Antarctic Science Platform OCEAN TEMPERATURE PROFILES ICE SHELVES OCEAN BOTTOM PRESSURE CONDUCTIVITY PROFILES BOREHOLES OCEAN PRESSURE OCEAN TEMPERATURE CONDUCTIVITY GCMD Earth Science and Earth Science Services Keywords 2024-02-14 geonetwork.thesaurus.external.theme.ardc-curated_gcmd-sciencekeywords_16-3-2023-06-09(1) 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 Ice Shelf DRILLING PLATFORMS GCMD Platform/Sources Keywords 2024-02-14 geonetwork.thesaurus.external.platform.ardc-curated_gcmd-platforms_16-3-2023-06-15 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 CTD GCMD Instrument/Sensors Keywords 2024-02-14 geonetwork.thesaurus.external.instrument.ardc-curated_gcmd-instruments_16-3-2023-06-16(1) 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 ROSS SEA GCMD Locations Keywords 2024-02-14 geonetwork.thesaurus.external.place.ardc-curated_gcmd-locations_16-3-2023-06-09 GCMD Locations Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations locations https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations ASP GCMD Project Keywords 2024-02-14 geonetwork.thesaurus.external.project.ardc-curated_gcmd-projects_16-3-2023-06-15(1) GCMD Project Keywords https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects projects https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/projects KAMB ICE STREAM KIS3 SWAIS2C K862A This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4 This data set conforms to the CC BY Attribution License (https://creativecommons.org/licenses/by/4.0/) Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ https Attribution 4.0 International (CC BY 4.0) Human Readable summary of the CC BY copyright license. Creative Commons Attribution 4