北冰洋-欧亚大陆-太平洋地学断面东南段岩石圈有效弹性厚度

袁炳强; Poudjom DjomaniYvette H.; 王平; 袁学诚; 左愚

Volume 27 Issue 4

Jul. 2002

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Article Navigation > Earth Science > 2002 > 27(4): 397-402

YUAN Bing-qiang, Poudjom Djomani Yvette H., WANG Ping, YUAN Xue-cheng, ZUO Yu, 2002. Effective Lithospheric Elastic Thickness of Southeastern Part of Arctic Ocean-Eurasia Continent-Pacific Ocean Geoscience Transect. Earth Science, 27(4): 397-402.

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Effective Lithospheric Elastic Thickness of Southeastern Part of Arctic Ocean-Eurasia Continent-Pacific Ocean Geoscience Transect

1.
Department of Geology, Northwest University, Xi'an 710069, China
2.
GEMOC National Key Centre, Department of Earth and Planetary Science, Macquarie University, NSW 2109, Australia
3.
China Geological Survey, Beijing 100083, China
4.
Centre for Regional Gravity S tudies, the Ministry of Land and Resources, Xi'an 710016, China

Received Date: 2002-03-09
Publish Date: 2002-07-25

Abstract

Abstract

The effective lithospheric elastic thickness of the continent is an important parameter to examine the large scale structure and analyze the mechanism of isostatic compensation within the plate, and is a parameter standing for the strength of the lithosphere. The T_e values along Quanzhou Heishui, the southeast section of the Arctic Ocean Eurasian continent Pacific Ocean geoscience transect, are estimated by using the coherence technique developed by Forsthy. Studies of the feature of the coherence between gravity and topography suggest that at short wavelengths (6.6-100 km) for each data box that is used to estimate T_e, the plate is strong enough to support topographic loads and gravity and topography are uncorrelated; at long wavelengths where the plate is deflected by surface and subsurface loads which are compensated by the flexure model. The high T_e values of Sichuan land stone with low heat flow values and the low T_e values in Ninghua, Datian with high heat flow values reflect a correlation, with low heat flow values corresponding to high T_e values and with high heat flow values corresponding to low T_e values. T_e values can be divided into two sections: northwest high section and southeast low section. There is roughly a positive correlation between crustal thickness and effective elastic thickness of the lithosphere.
- effective elastic thickness,
- coherence technique,
- Arctic Ocean Eurasian continent Pacific Ocean geoscience transect

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References(11)

References

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