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Project details

Title: Interactions of the Totten Glacier with the Southern Ocean through multiple glacial cycles.
Id: 2454
Investigator(s): Leanne Armand
Macquarie University [details]

Description: This study will gather data to examine the physical interaction between the Totten Glacier and Southern Ocean through multiple glacial cycles by: 1. Mapping sediment deposited on the continental shelf and slope by the Totten Glacier and using this to understand sediment deposition processes 2. Sampling long sediment cores from the continental shelf and slope, and using the deposition model to interpret their formation processes 3. Directly measuring a suite of ocean water and surface sediment properties, including microorganisms, trace elements and isotopes, to allow for accurate interpretation of sediments 4. Mapping benthic habitats in the area, including studies of seafloor biota and geomorphological characteristics, using underwater video and still imagery.
Years: 2017
Hierachy: Macquarie University » Faculty of Science » Department of Biological Sciences

Publications


Data


Metadata.

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List of surveys that this project was on.

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Survey InvestigatorDescription
IN2017_V01

[details]
Leanne Armand (Macquarie University) RV Investigator voyage in2017_v01, titled "Interactions of the Totten Glacier with the Southern Ocean through multiple glacial cycles." The primary voyage objectives are: 1. To survey and map, using multibeam, subbottom profiler, bioacoustics echosounder and gravity profiling, by priority, the: a) Continental slope of the Sabrina coast margin, which are presumed to contain the canyons fed by outflow from the Totten Glacier. i) Area A4. ii) Area C4. b) Sabrina coast shelf region, which links the Totten Glacier to the slope, where sea ice free conditions permit. i) Area B. 2. To undertake seismic strike and dip lines, by priority, on the: a) continental slope of the Sabrina coast margin, using Italian and MNF seismic equipment, in day-light hours with respect to permitted Marine Mammal Observation protocols, in: i) Area A4. ii) Area C4. 3. To retrieve slope and shelf sediments, for a variety of palaeoceanographic, micropalaeontological, genomic and geochemical studies (as approved by ATEP and AMLR permits) on the: a) continental slope of the Sabrina coast margin (Priority Area A4 and C4). b) Sabrina coast shelf region (Area B), where sea-ice free conditions permit. 4. To retrieve water samples, for a variety of palaeoceanographic, microbiological, genomic and geochemical studies (and approved by AMLR permit), with reference to hydrochemical characterisation on the: a) continental slope of the Sabrina coast margin (Priority Area A4 and C4). b) Sabrina coast shelf region (Area B), where sea ice free conditions permit. 5. To record video and still imagery of the seafloor biota and geomorphological characteristics, for habitat mapping using deep tow video systems and multi-corer video on the: i. continental slope of the Sabrina coast margin (Priority Area A4 and C4), ii. Sabrina coast shelf region (Area B), which links the Totten Glacier to the slope, where sea ice free conditions permit. 6. To collect oceanographic and climatic parameters using expendable bathymetric (XBT), ADCP and underway instruments.
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