Gravity Observations along the traverse routes from Syowa Station to Dome Fuji Station, East Antarctica

元データ 国立極地研究所

概要

In polar regions, there are relatively sparse geophysical and geodetic data for the severe environment. This paper presents the result of gravity observations obtained along the traverse routes from Syowa Station to Dome Fuji Station, East Antarctica. The obtained gravity values were determined within the accuracy of 1 mgal. Gravity values should be available to examine gravity changes for each station. The Bouguer gravity anomalies calculated show the large negative anomaly trending inland toward Dome Fuji, in the southern most observation area, at about -200 mgal. This indicates that the Bouguer gravity anomalies express the depth of the Moho discontinuity, that is, thickening of the crust inland, which in turn suggests that the depth of the Moho discontinuity around Dome Fuji Station is about 45 km.

著者

Tanaka Yoichi Geosystems Inc.
Kanao Masaki National Institute of Polar Research, Research Organization of Information and Systems, 10-3, Midori
Yamanouchi Takeshi Geosystems Inc.
Motoyama Hideaki National Institute Of Polar Research
Kanao Masaki National Institute Of Polar Research
Yamanouchi Takashi Geosystems Inc.
Yamanouchi Takashi National Institute For Polar Research
Higashi Toshihiro Department of Geophysics, Graduate School of Science, Kyoto University
Yamanouchi T Graduate Univ. Advanced Studies Tokyo
Motoyama H National Institute Of Polar Research
Yamada T Geosystems Inc.
Yamanouchi Takashi National Inst. Of Polar Res. And Dep. Of Polar Sci. The Graduate Univ. For Advanced Studies 10-3 Mid
Higashi Toshihiro Department Of Geophysics Graduate School Of Science Kyoto University
Kanao Masaki National Insitute Of Polar Research
Motoyama Hideaki National Inst. Of Polar Res. 10-3 Midori-cho Tachikawa-shi Tokyo 190-8518 Jpn

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