Ice Shelf Surface Elevation data: Amery Ice Shelf 1988-89

A Lambert Glacier - Amery Ice Shelf series of airborne (Squirrel helicopter and Twin Otter fixed wing) RES and surface elevation profiles were conducted over two summer seasons; 1988/89 and 1989/90. Altogether nearly 10,000 km of various flight paths were undertaken, operating out of Mawson (67.60 S, 62.88 E), Davis (68.58 S, 77.97 E), Dovers (70.22 S, 65.87 E) or Beaver Lake (70.80 S, 68.18 E).


More information can be found at the BEDMAP website.


The fields in this dataset are:


mission_id (unique mission identifier)

latitude (decimal degrees)

longitude (decimal degrees)

ice_thickness (m)

surface_elevation (m)

water_column_thickness (m)

bed_elevation (m)

Simple

Identification info

Alternate title
Ice Shelf Surface Elevation data: Amery Ice Shelf 1988-89
Date (Publication)
1999-10-07
Edition
1

Originator

Allison, I.

Publisher

Australian Antarctic Data Centre

Principal investigator

ALLISON, IAN
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Collaborator

ALLISON, IAN
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/Amery_Ht_88-89

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Topic category
  • Geoscientific information
  • Inland waters
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
1988-12-01 1989-12-31
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER ELEVATION/ICE SHEET ELEVATION
Keywords
  • ANTARCTICA
  • BED ELEVATION
  • BEDMAP
  • ICE THICKNESS
  • LATITUDE
  • LONGITUDE
  • MISSION ID
  • RADIO ECHO SOUNDING
  • RES
  • SOUTHERN PRINCE CHARLES MOUNTAINS
  • SURFACE ELEVATION
  • WATER COLUMN THICKNESS
NASA/GCMD Earth Science Keywords
  • Aircraft
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
  • ACE/CRC
NASA/GCMD Earth Science Keywords
  • CONTINENT > ANTARCTICA > Amery Ice Shelf
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
BandW 35 mm film for RES aircraft-surface separation data. Digital barometer for aircraft elevation data. Data stored on a spreadsheet (MS Excel) geocoded files. These data are publicly available for download from the provided URL.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
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=Amery_Ht_88-89 when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
free
Planned available datetime
1999-10-07T00:00:00
Units of distribution
kb
Transfer size
65
Distribution format
  • .csv

OnLine resource
GET DATA

Download page for the data

OnLine resource
PROJECT HOME PAGE

BEDMAP Website

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
Gaps in the data exceeded 50% for 1988/89 (lack of digital barometer), but formed a largely complete set for 1989/90. The ANARE Mk V 100 MHz ice radar produced peak power of 4 kW with a pulse duration of 250 ns and repetition rate of 10 kHz. A logarithmic amplifier stage was incorporated into the system. Fixed wing (Twin Otter) antenna array consisted of a transmit and receive yagi (1 driven element, 1 director, aircraft wing as reflector); helicopter (AS350B Squirrel) antenna array consisted of a single-element in a pseudo-corner corner reflector arrangement beneath the aircraft body. Typical flight speeds were 240 km/hr (Twin Otter) and 180 km/hr (Squirrel). Typical flight altitudes were 300 m above the terrain surface for both aircraft. Data was recorded continuously on 35mm BandW film, later scaled by hand every 20 s of flight time (approximately 1 km). Delay times were reduced to aircraft-surface separations assuming a signal propagation speed of 300 m/microsecond. For 1988/89 no aircraft barometer was available. Any elevation data for this season was based on interpolation between surface points of known elevation (from surface differential GPS survey) assuming constant rate of change of aircraft elevation (approx. 5200 km of lfight path). For 1989/90 season a digital barometer was logged every 20 s on board the aircraft and elevations were produced using aircraft-surface separations from the ice radar record (approx. 4100 km of flight path). The data have been checked by comparison (crossover) to other available datasets for the region. Pseudo-range GPS (without selective availability; SA) available for part of the 1988/89 (limited GPS constellation) and all the 1989/90 data sets; accurate to 30-100 m, digitally logged every 20 s. Dead-reckoning elsewhere; with reference to visual landmarks or features recognisable on Landsat imagery; accurate to within several kilometres. An entry of -9999 in the spreadsheet indicates null data.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2016-08-05 - record updated by Dave Connell.

Metadata

Metadata identifier
string/Amery_Ht_88-89

Language
English
Character encoding
UTF8

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
13cf9ec9-a229-4246-a412-fd5eb265c1b2

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2015-11-30T04:03:38

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/Amery_Ht_88-89

Point of truth for the metadata record

Date info (Creation)
1999-10-07T00:00:00
Date info (Last Update)
2017-04-26

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
E
W


Keywords


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Not available