Preliminary report of electromagnetic soundings on East Ongul Island, Antarctica

Observations of the telluric field were carried out at Syowa Station (69°S, 39°35'E) in Lutzow Holm Bay, East Antarctica from May 22, 1995 to January 31, 1996. Telluric fields at Syowa Station have strong anisotropy which varies with frequency. Major axis of electrical variations at high freque...

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Bibliographic Details
Main Authors: Aoyama,Yuichi, Nogi,Yoshifumi, Kaminuma,Katsutada, Nagao,Toshiyasu
Format: Report
Language:English
Published: The Graduate University for Advanced Studies/National Institute of Polar Research/National Institute of Polar Research/Earthquake Prediction Research Center, Tokai University 1998
Subjects:
telluric field
geomagnetic field
electrical anisotropy
electromagnetic sounding
East Antarctica
Syowa Station
Ongul
Ongul Island
East Ongul Island
Antarc*
Antarctica
Polar geoscience
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3018
http://id.nii.ac.jp/1291/00003018/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3018&item_no=1&attribute_id=18&file_no=1
Description
Summary:Observations of the telluric field were carried out at Syowa Station (69°S, 39°35'E) in Lutzow Holm Bay, East Antarctica from May 22, 1995 to January 31, 1996. Telluric fields at Syowa Station have strong anisotropy which varies with frequency. Major axis of electrical variations at high frequency (0.1 Hz-0.5Hz) trend almost N60°E and those at low frequency (1mHz-10mHz) have a N135°E trending major axis. These results suggest that electrical anisotropy exists beneath Syowa Station and the trend changes from N60°E to N135°E with depth.

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