Related URL

Link: GET DATA Description: Download point for the data - excel spreadsheet, text file Link: GET RELATED DATA SET METADATA (DIF) Description: Bathymetric data of Long and Tryne Fjords at Vestfold Hills, Antarctica, collected in December 1999 Link: GET RELATED DATA SET METADATA (DIF) Description: Interpolated bathymetry of Long and Tryne Fjords, Vestfold Hills, Antarctica Link: VIEW RELATED INFORMATION Description: Citation reference for this metadata record and dataset

Geographic Coverage

N: -68.51341

S: -68.54131

E: 78.18976

W: 78.06903

Min Depth: 4.1 M

Max Depth: 141.5 M

Temporal Coverage

Start Date: 2007-05-24

Stop Date: 2007-05-24

Location Keywords

OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Vestfold Hills CONTINENT > ANTARCTICA > Long Fjord GEOGRAPHIC REGION > POLAR

Data Resolution

Vertical Resolution: 30 cm

Science Keywords

BIOSPHERE >VEGETATION    [Definition]

CRYOSPHERE >SEA ICE    [Definition]

OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >WATER DEPTH    [Definition]

OCEANS >COASTAL PROCESSES >FJORDS    [Definition]

OCEANS >MARINE SEDIMENTS    [Definition]

OCEANS >SEA ICE    [Definition]

OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >BATHYMETRY    [Definition]

ISO Topic Category

INLAND WATERS OCEANS

Platform

FIELD SURVEYS    [Information]

Instrument

GPS >Global Positioning System    [Information]

Quality

Methodology: A line reel was rigged up to sit on the back a quad (see picture in download file) to allow measurements to be taken without the need to touch the wet cord (a problem, even for gloved hands, in sub-zero temperatures). The measuring cord is nylon blind cord marked every metre with red heat shrink and then every ten metres with yellow heat shrink. There is some stretch in the cord but not much, (roughly 300mm over 100 metres with about 10kg of weight applied). Two weights were made up, one at 2 kg and one a little over 4 kg (the hope was to be able to use the lighter weight to reduce line stretch, but it may be affected more by currents, and cause the line to drift). A gen-set was also available on the quad bike and was used to power a drill for making holes in the sea ice. In total, 60 holes were drilled at 100 metre intervals (using the odometer on the quad bike), and the location of each hole was recorded on a GPS. The line was then dropped, any slack was taken up and the bottom established before taking the measurement. The time was also recorded in case tidal variations need to be checked. We followed the travel routes up the Fjord to Brookes Hut taking cross measurements every 500 metres. The setup worked well and took about 2 to 4 minutes per hole depending on water depth. Water depths varied from 3.6 metres between islands to 141.6 metres out from the entrance to the Fjord. There was very little sediment coming up with the weight and what did come up was either dark green vegetation or grey silt. GPS measurements were collected using the WGS84 horizontal datum.

Access Constraints

These data are accessible from the URL given below. The download file contains an excel spreadsheet of water depths and waypoints, a text file with waypoint latitudes, longitudes, date and time, and several photos of the process.

Use Constraints

This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/). The investigator, technical contact and data centre must be acknowledged when using these data.

Keywords

Long Fjord

Water Depth

bathymetry

sea ice

drilling

Waypoint

Latitude

Longitude

Date

Time

Data Set Progress

IN WORK

Originating Center

Data Center

Australian Antarctic Data Centre, Australia    [Information] Data Center URL: http://data.aad.gov.au Data Center Personnel Name: DATA OFFICER AADC Phone: +61 3 6232 3244 Fax: +61 3 6232 3351 Email: metadata at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia

Distribution

Distribution_Media: HTTP Distribution_Size: 2.6 MB Distribution_Format: csv, text, jpeg Fees: free

Personnel

JOHN GIBSON Role: INVESTIGATOR Phone: +61 3 6226 7488 Fax: +61 3 6226 2973 Email: John.gibson at utas.edu.au Contact Address: IASOS Private Bag 77 University of Tasmania City: Hobart Province or State: Tasmania Postal Code: 7001 Country: Australia

GRAHAM COOK Role: TECHNICAL CONTACT Email: graham.cook at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia

DAVE CONNELL Role: DIF AUTHOR Phone: +61 3 6232 3244 Fax: +61 3 6232 3351 Email: dave.connell at aad.gov.au Contact Address: Australian Antarctic Division 203 Channel Highway City: Kingston Province or State: Tasmania Postal Code: 7050 Country: Australia