Data

Amery Ice Shelf - hot water drill borehole, AM02 Brancker thermistor data - 2011/2012 data

Australian Antarctic Division
Vogel, S. ; VOGEL, STEFAN W ; CONNELL, DAVE J.
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26179/8078-4d66&rft.title=Amery Ice Shelf - hot water drill borehole, AM02 Brancker thermistor data - 2011/2012 data&rft.identifier=10.26179/8078-4d66&rft.publisher=Australian Antarctic Data Centre&rft.description=AM02 borehole drilled December 2000.Consult Readme file for detail of data files and formats.2011-2012 data may be final data from the unit owing to battery failure.The original project for this dataset was ASAC 1164, but recent data fall under the auspices of project AAS 4096.From the ASAC_1164 metadata record:Most of the snow falling on inland Antarctica drains via large ice streams and floating ice shelves to the sea where it lost by iceberg calving or as melt beneath the shelves. Ocean interaction beneath the shelves is complicated, and regions of basal refreezing as well as melt occur. These processes are important not only because they are a major component of the Antarctic mass budget, but because they also modify the characteristics of the ocean, influencing the formation of Antarctic Bottom Water which plays a major role in the global ocean circulation. The processes are sensitive to climate change, and shifts in ocean temperature or circulation near Antarctica could lead to the disappearance of all Antarctic ice shelves.The AmeryIce Shelf is the major embayed shelf in East Antarctica, and the subject of considerable previous ANARE investigation. Ocean interaction processes occurring beneath the shelf are only poorly understood, and this project will directly measure water characteristics and circulation in the cavity underneath the ice shelf, and the rates of melt and freezing on the bottom of the shelf. These measurements will be made through a number of access holes melted through the shelf. The project is closely linked with other projects investigating the circulation and interactions in the open ocean to the north of the shelf, and studies of the ice shelf flow and mass budget.There will be child records for each of the following data sets:AM02 borehole* CTD profiles through water column* CTD annual records at selected depths* Borehole diameter caliper profiles* Temperature measurements through ice shelf and across ice-water interface* 1.5 m sea floor sediment core* GPS records (surface elevation, ice motion)Progress Code: completedStatement: See Readme file ... data collected as header, then 8 x celsius temperature columns for each of 8 x thermistors on the cable ... uppermost sensor in leftmost column of data ... data collected at 0.5 hour sampling rate for several days after initial installation, then 6 hour rate ... batteries fail in loggers after weeks to months, but can be replaced annually ... The minimum depth of 57 metres asl refers to the height of the ice surface.&rft.creator=Vogel, S. &rft.creator=VOGEL, STEFAN W &rft.creator=CONNELL, DAVE J. &rft.date=2015&rft.coverage=westlimit=72.64; southlimit=-69.71; eastlimit=72.64; northlimit=-69.71&rft.coverage=westlimit=72.64; southlimit=-69.71; eastlimit=72.64; northlimit=-69.71&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4096_AM02_Brancker when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=geoscientificInformation&rft_subject=oceans&rft_subject=inlandWaters&rft_subject=EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW/ICE TEMPERATURE&rft_subject=EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHELVES&rft_subject=HOT WATER DRILL&rft_subject=AMISOR&rft_subject=AMERY ICE SHELF&rft_subject=TEMPERATURE&rft_subject=THERMISTORS > THERMISTORS&rft_subject=GROUND-BASED OBSERVATIONS&rft_subject=FIELD INVESTIGATION&rft_subject=AMD&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=ACE/CRC&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4096_AM02_Brancker when using these data.

This metadata record is publicly available.

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Full description

AM02 borehole drilled December 2000.

Consult Readme file for detail of data files and formats.

2011-2012 data may be final data from the unit owing to battery failure.

The original project for this dataset was ASAC 1164, but recent data fall under the auspices of project AAS 4096.

From the ASAC_1164 metadata record:
Most of the snow falling on inland Antarctica drains via large ice streams and floating ice shelves to the sea where it lost by iceberg calving or as melt beneath the shelves. Ocean interaction beneath the shelves is complicated, and regions of basal refreezing as well as melt occur. These processes are important not only because they are a major component of the Antarctic mass budget, but because they also modify the characteristics of the ocean, influencing the formation of Antarctic Bottom Water which plays a major role in the global ocean circulation. The processes are sensitive to climate change, and shifts in ocean temperature or circulation near Antarctica could lead to the disappearance of all Antarctic ice shelves.

The Amery
Ice Shelf is the major embayed shelf in East Antarctica, and the subject of considerable previous ANARE investigation. Ocean interaction processes occurring beneath the shelf are only poorly understood, and this project will directly measure water characteristics and circulation in the cavity underneath the ice shelf, and the rates of melt and freezing on the bottom of the shelf. These measurements will be made through a number of access holes melted through the shelf. The project is closely linked with other projects investigating the circulation and interactions in the open ocean to the north of the shelf, and studies of the ice shelf flow and mass budget.

There will be child records for each of the following data sets:

AM02 borehole
* CTD profiles through water column
* CTD annual records at selected depths
* Borehole diameter caliper profiles
* Temperature measurements through ice shelf and across ice-water interface
* 1.5 m sea floor sediment core
* GPS records (surface elevation, ice motion)

Lineage

Progress Code: completed
Statement: See Readme file ... data collected as header, then 8 x celsius temperature columns for each of 8 x thermistors on the cable ... uppermost sensor in leftmost column of data ... data collected at 0.5 hour sampling rate for several days after initial installation, then 6 hour rate ... batteries fail in loggers after weeks to months, but can be replaced annually ... The minimum depth of 57 metres asl refers to the height of the ice surface.

Data time period: 2011-07-01 to 2012-06-30

This dataset is part of a larger collection

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72.64,-69.71

72.64,-69.71

text: westlimit=72.64; southlimit=-69.71; eastlimit=72.64; northlimit=-69.71

Subjects
ACE/CRC | AMD | AMD/AU | AMERY ICE SHELF | AMISOR | CEOS | CONTINENT > ANTARCTICA | EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHELVES | EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > SNOW/ICE TEMPERATURE | FIELD INVESTIGATION | GEOGRAPHIC REGION > POLAR | GROUND-BASED OBSERVATIONS | HOT WATER DRILL | OCEAN > SOUTHERN OCEAN | TEMPERATURE | THERMISTORS > THERMISTORS | geoscientificInformation | inlandWaters | oceans |

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Other Information
Download point for the data (GET DATA > DIRECT DOWNLOAD)

url : https://data.aad.gov.au/eds/4005/download

Public information for ASAC project 1164 (PROJECT HOME PAGE)

url : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_1164

Public information for AAS project 4096 (PROJECT HOME PAGE)

url : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_4096

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

url : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4096_AM02_Brancker

Identifiers
ACN 633 798 857