航空地球物理勘探在南极调查中的应用

doi:10.11720/wtyht.2022.1076

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Abstract

Airborne geophysical techniques represent a cost-effective way for obtaining insights into the crustal geology of the Antarctic. Based on the analysis of the history of Antarctic airbrone geophysical survey and development of facilities and fly-platform applied in the survey, this paper gives a review of the leading scientific application topic of airborne geophysical data i.e.,the crustal structure of Antarctica,the reconstruction and restoration of ancient terrains, magmatism and volcanism identification,and the interaction between Antarctica Ice Shelf and bed rock, which shows that airborne geophysical survey provides effective technical support for Antarctica geosciences research.Our research shows that there is still a blank area for geophysical survey. Based on out review, the combination of airborne magnetic, airborne gravity and ice radar data has provide a new solution to the interaction study of Antarctic Ice shelf and bedrock.

Key words： airborne geophysical survey Antarctica current situation of geophysical survey geophysical data application

Received: 09 February 2021 Published: 25 February 2022

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	Articles by authors
	Xiao LI
	Jing TONG
	Wan ZHANG
	Guo-Tao YAO
	Xuan-Jie ZHANG

Cite this article:

Xiao LI,Jing TONG,Wan ZHANG, et al. Application of airborne geophysical survey in antarctica[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 12-21.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2022.1076 OR https://www.wutanyuhuatan.com/EN/Y2022/V46/I1/12

Parameter comparison of polar airborne geophysical fixed-wing platform

7,8]
a—free-air gravity anomalies in Antarctica;b—ADMAP-2 compilation of total field magnetic anomalies
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Field geophysical data covering over Antarctica^[7,8]
a—free-air gravity anomalies in Antarctica;b—ADMAP-2 compilation of total field magnetic anomalies

15]
a—aeromagnetic anomaly over TOAST;b—the range of TOAST
">

Aeromagnetic anomaly and geological structure character of TOAST^[15]
a—aeromagnetic anomaly over TOAST;b—the range of TOAST

17]
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Aeromagnetic and gravity fitting inversion profile in the eastern Enderby basin and its crustal structure interpretation^[17]

23]based on the Leeuwin model^[24]
a—total magnetic intensity anomaly data;b—isostatic residual gravity anomaly data
">

Reconstruction of Gondwana fit at 160 Ma^[23]based on the Leeuwin model^[24]
a—total magnetic intensity anomaly data;b—isostatic residual gravity anomaly data

29]
a—grounding line model in Antarctic coastal ice shelf; b—free-air gravity anomalies in Dotson Ice Shelf;c—the observed and calculated airborne gravity anomaly;d—inverted surface topography of Dotson Ice Shelt E-E'profile based on airborne gravity data
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Basement surface topography under Dotson Ice inverted by airborne gravity data^[29]
a—grounding line model in Antarctic coastal ice shelf; b—free-air gravity anomalies in Dotson Ice Shelf;c—the observed and calculated airborne gravity anomaly;d—inverted surface topography of Dotson Ice Shelt E-E'profile based on airborne gravity data

33](interface superimposed on subglacial topography)
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Geothermal heat flux distribution at the ice-rock ^[33](interface superimposed on subglacial topography)

6]
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Resistivity cross-section for the length of the Taylor Valley(a) and conceptual diagram depicting predicted hydrological connectivity(b)^[6]

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