Amery Ice Shelf - hot water drill borehole, 2005-06 - AM04Entry ID: ASAC_1164_AM04
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Abstract: Amery Ice Shelf AM04 borehole drilled mid-January 2006. Sub-shelf water profiling measurements conducted over a period of a few days. Partial video recording of borehole walls and sea floor benthos.
Collection of targetted ice core samples. Sediment sample collected from sea floor. Long term monitoring instruments installed (thermistors in ice, 3 x CTD in ocean cavity).
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Start Date: 2006-01-10
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
OCEANS > MARINE SEDIMENTS
OCEANS > OCEAN TEMPERATURE
OCEANS > SALINITY/DENSITY
PALEOCLIMATE > ICE CORE RECORDS
SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > GLACIAL LANDFORMS
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
CRYOSPHERE > GLACIERS/ICE SHEETS
CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER MASS BALANCE/ICE SHEET MASS BALANCE
CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER THICKNESS/ICE SHEET THICKNESS
CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER ELEVATION/ICE SHEET ELEVATION
CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER MOTION/ICE SHEET MOTION
PALEOCLIMATE > OCEAN/LAKE RECORDS > BOREHOLES
Quality During the second half of the cruise the use of the conical nets were discontinued. This cruise provides data from the first of six cruises, which provides a good coverage of the area over varying seasons and conditions.
Data collection: Three net types were used for the collection of species; rectangular midwater trawl (RMT8), bongo nets, and conical nets. Routine ... stations were taken as close to solar midday and midnight. At each station a &blind& RMT horizontal haul at a nominal depth of 62m, an oblique bongo tow from a notional 200 m to the surface, a horizontal surface tow, and a vertical tow with conical nets were taken. Conical surface tows and vertical tows were discontinued in the second half of the cruise due to problems.
Ship-board processing: The entire catch was weighed as accurately as possibly immediately it was onboard, and large specimens (medusae etc.) were also individually weighed. Euphausia superba were separated, and the remainder of the catch was sorted into major groups, eg. pteropods, fish, etc., and preserved. A random sample of at least 200 Euphausia superba were, measured, sorted for sex and maturity stage and preserved as a separate sample. The remaining Euphausia superba was either frozen or preserved.
Post-ship processing: The catches were sorted into invidual species, weighed and counted. Consistency can be established through comparison of different net methods. Oceanography and phytoplankton data were also collected at the net sampling stations, so there is consistency between the oceanography and biology data. The cruise track was established at the beginning of the expedition to eliminate any bias, and was followed as closely as weather and ice conditions allowed. Stations were taken as close as possible to solar miday and midnight.
See the attached documentation for more information.
Access Constraints The data and documentation are available for download from the URLs given below. Data also published to GBIF, OBIS and SCAR-MarBIN.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at the URL below when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 88 kb
Distribution Format: excel
Distribution Media: HTTP
Distribution Size: 13 MB
Distribution Format: pdf
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6232 3364
Fax: +61 3 6232 3158
Email: graham.hosie at aad.gov.au
Australian Antarctic Division 203 Channel Highway
Province or State: Tasmania
Postal Code: 7050
Williams R. et al. (1983) FIBEX cruise zooplankton data. Australian National Antarctic Research Expedition Research Notes 7
Creation and Review Dates
DIF Creation Date: 1999-10-07
Last DIF Revision Date: 2009-02-27