Dataset Information
NBP1402 diatom data
Data DOI:
AMD - DIF Record(s)
Totten Glacier is the termination of the largest marine-based portion of the East Antarctic Ice Sheet, the Aurora Subglacial Basin. Yet little is known about the glacial evolution of the catchment and the factors influencing its present and past behavior. Due its remote location and heavy sea ice, the continental shelf in front of the Totten Glacier had not been comprehensively surveyed prior to this study. Satellite observations indicate that the Totten ice drainage system is thinning, and it has been hypothesized that this thinning is in response to undermelting by warm ocean waters over the continental shelf. While this process is observed elsewhere in Antarctica (e.g. the rapidly retreating Pine Island Glacier in West Antarctica), the Totten Glacier system is potentially Antarcticas most important glacial drainage system due to its large size; it is three times larger than any system in West Antarctica. </br>The main goals of this proposal were: </br>To generate multibeam bathymetric maps of the continental shelf proximal to the Totten Glacier system to understand the recent regional glacial history and to document the pathways, if any, for circumpolar deep water to move onto the shelf. </br>To conduct a physical oceanographic survey of the region proximal to the Totten Glacier system, to determine the presence, if any, of warm ocean waters over the continental shelf.</br>To conduct a seismic survey of the continental shelf to assess the long-term evolution of the glacial system in the Aurora Subglacial Basin.</br>To collect marine sediment cores to determine the regional deglacial to Holocene climate history and the influence of warm circumpolar deep water.
Leventer, Amy; NBP1402 science party,
Date Created:
USAP-DC (current)
Spatial Extent(s)
West: 117, East: 146, South: -67, North: -66
Temporal Extent(s)
Start: 2014-01-29 - End: 2014-03-16
Supplemental Docs
Data Files

0 B

Select All
1.0 MB

MD5 Checksum: 1753f6a716cb059861a8a6f785a69a0a File Type: Microsoft Excel

35.8 kB

MD5 Checksum: e34645c6393f79695753cd1ec2c49c4e File Type: Microsoft Excel (OpenXML)

65.1 kB

MD5 Checksum: 0deab235546f547c2d6b394d58f91a35 File Type: Microsoft Excel (OpenXML)

884.2 kB

MD5 Checksum: 2141536b65080b3715e370549384e008 File Type: Microsoft Excel

67.7 kB

MD5 Checksum: 4137811c9106537788192458a448702d File Type: Microsoft Excel (OpenXML)

135.4 kB

MD5 Checksum: 28de2019baeaff1b475dcbf40eb45f6c File Type: Microsoft Excel (OpenXML)

77.1 kB

MD5 Checksum: da4f03b6f3514492e6b003341b38b252 File Type: Microsoft Excel (OpenXML)

This dataset has been downloaded 21 times since March 2017 (based on unique date-IP combinations)