GCMD

Summary

Abstract: Metadata record for data from ASAC Project 1212.
See the link below for public details on this project.
---- Public Summary from Project ----
This project aims to improve ship-based sea-ice thickness measurements made using an electromagnetic induction device by performing a theoretical analysis of the sensitivity of the electromagnetic instrument to factors such as instrument height and orientation, ice conductivity and thickness, and seawater conductivity. The results of the theoretical study will be used to assist the interpretation of an existing sea-ice thickness data set from the Mertz Glacier polynya cruise (V1, 1999/2000).

The data set consists of the results of numerical modelling of the response of the EM31 electromagnetic instrument to typical one- and three-dimensional sea ice structures. One-dimensional model calculations were performed using software written specifically for the project. Three-dimensional model calculations were performed using Marco_air version 2.3, written by Z. Xiong and A. Raiche, CSIRO Mathematical Geophysics Group. Technical descriptions of this program are given in the preceding References section.

The download file below contains some numberical output from the models, as well as a detailed description of the models used.

Quality

The dates provided in temporal coverage are the dates of the financial year of which the project was funded. As this project was a modelling project, no actual data collection took place.

Access Constraints

Further information is available for download from the URL given below.

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: 385 kb
Distribution_Format: excel, word
Fees: free

Personnel

JAMES REID
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6226 2477
Fax: +61 3 6223 2547
Email: James.Reid at utas.edu.au
Contact Address:
School of Earth Sciences
GPO Box 252-79
University of Tasmania
City: Hobart
Province or State: Tasmania
Postal Code: 7001
Country: Australia

Related URL

Link: GET DATA
Description: Download point for the data - excel file, word file

Link: VIEW PROJECT HOME PAGE
Description: Public information for ASAC project 1212

Link: VIEW RELATED INFORMATION
Description: Citation reference for this metadata record and dataset

Publications/References

Raiche, A. (2001), Choosing an AEM system to look for kimberlites - a modelling study, Expl. Geophys., 32, 1-8

Reid, J. E., Vrbancich, J. and Worby, A. P. (2001), Antarctic sea ice thickness measurements using a ship-borne electromagnetic induction device, Proc. 15th Conference and Exhibition of the Australian Society of Exploration Geophysicists, Brisbane, on CD

Reid, J. E., Worby, A. P., Vrbancich, J. and Munro, A. I. S. (Unknown), Ship-borne electromagnetic measurements of Antarctic sea ice thickness, Geophysics

Worby, A. P., Griffin, P. W., Lytle, V. I. and Massom, R. A. (1999), On the use of electromagnetic induction sounding to determine winter and spring sea ice thickness in the Antarctic, Cold Regions Sci. and Tech., 29, 49-58

Xiong, Z. (1992), Electromagnetic modelling of 3-D structures by the method of system iteration using integral equations, Geophysics, 57, 1556-1561

Xiong, Z. and Tripp, A. C. (1995), A block iterative algorithm for 3-D electromagnetic modelling using integral equations with symmetrized substructures, Geophysics, 60, 291-295