Specimen meta data sheet for BEDMAP data

Mission Summary Table

Meta data Field

Nmemonic

Type

Field Value

Description

MISSIONID

Mission ID

NR

4 

Mission reference ID number assigned by BEDMAP project

MISSDESC

Mission Descrip.

TXT

ANARE Aerial RES of Amery Ice Shelf 1989, December 1989, First Phase.

Description of mission

REGION

Geographic region

TXT

Lambert Glacier, Amery Ice Shelf

Description of the geographical extent of the mission

DATATYPE

Datatype keyword

KW

Airborne RES

Keyword (Airborne RES / Ground-based RES / Seismic / Gravity / Borehole)

PLATFORM

Platform

TXT

Flights 02 - 06 Twin Otter 240 km/hr, Flights 11-14 AS50B (Squirrel) helicopter 180 km/hr.

Description of platform from which measurements were made (eg. Twin Otter Aircraft)

THICMETH

Method

KW

ANARE mk 2, 100 MHz ice radar, power 4kW. PRF 10 kHz, Logarithmic receiver. Fixed wing = Separate transmit and reciever antennae consisting of driven element, director and using aircraft wing as reflector. Helo = single antenna in corner reflector.

Method used to obtain ice thickness (eg. Seismic, RES, Gravity, Borehole)

THICPROC

Processing

TXT

Delay time reduced to ice thickness assuming 169 m/us, no firn correction.

Description of algorithm used to calculate ice thickness (Including numeric constants)

THICLOG

Logging

TXT

Film record, scaling at 20 seconds by hand.

Description of data logging methods (Digital, Analogue, 35 mm file etc.)

THICPREC

Accuracy

NR

Estimated accuracy of ice thickness measurement / m

NAVMETH

Method

KW

GPS

Keyword ( local fix / DR / Astro / Inertial / Doppler / GPS/ < other > )

NAVDESC

Description

TXT

Pseudorange GPS or DR (codes given in extra field)

Description of navigation methods.

NAVPREC

Accuracy

TXT

100 for GPS (otherwise several km)

Estimated accuracy of navigation / m

TERRMETH

Terrain clearance

TXT

RES

Aircraft height about ground / m (Const. pressure, const. terrain clearance, etc.)

TERRLOG

Logging

TXT

None

Description of surface elevation logging methods

TERRPREC

Accuracy

NR

20 m where given

REFMAP

Horizontal fixing

TXT

Map sheet used in fixing etc.

DATUM

Datum

TXT

Ellipsoid to which data is fixed

SURFMETH

Method

TXT

Differential GPS at key points then interpolated

Description of instrumentation, algorithms, etc. Orthometric or ellipsoidal

SURFLOG

Logging

TXT

None D

Description of logging methods

SURFPREC

Accuracy

NR

20 m where given

Estimated accuracy of surface elevation measurements / m

DATAVOL

Volume

TXT

5000 points

Volume of data

SOURCELOC

Location of primary data

TXT

Antarctic CRC/ Australian Antarctic Division. GPO Box 252-80, Hobart, 7001, Australia

Institute and person holding the original data or best contact.

SOURCEINST

Funding agency

TXT

Agency(s) responsible for funding project

SOURCEPI

Responsible person

TXT

Dr Ian Allison (i.allison@antcrc.utas.edu.au)

Details of a currently active researcher who can give further details

SOURCEREF

Reference

TXT

References to publications that have discussed this data

AVAILABILITY

Availability

TXT

Current availability of data and restrictions placed upon it

COMMENTS

Other comments

TXT

Other pertinent comments concerning data