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Abstract
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Article Information:
Gravity Anomaly Separation based on Bidimensional Empirical Mode Decomposition
Yao Pei, Yan-Gang Wu and Da-Cheng Jia
Corresponding Author: Yao Pei
Submitted: December 20, 2011
Accepted: April 23, 2012
Published: November 01, 2012 |
Abstract:
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Empirical Mode Decomposition is a time-frequency analysis method which can adaptive
decomposition of complex signals. This article proposed the bidimensional empirical mode decomposition
based on the calculation principle of empirical mode decomposition and the structural characteristics of the
regional gravity anomaly. This method can be applied to the separation of gravity anomalies. The intrinsic mode
functions of different scales contain various bands of compositions, then obtained the depth of field source by
Power spectrum of radial average logarithmic. Compared with the conventional methods, such as the upward
continuation method in the potential field separation method, we don't need to set any parameters beforehand.
The application shows that in DaolangheDuge area: the multi-scale component based on bidimensional
empirical mode decomposition could reflect the anomaly source form from shallow to deep. The field source
of local gravity high value in the depth of less than 200 m, The field source of area gravity anomaly in the depth
of 500 m, the base form is slope towards the North East which northwest high to southeast low.
Key words: Bidimensional empirical mode decomposition, gravity anomaly, intrinsic mode function, separation, , ,
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Abstract
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Cite this Reference:
Yao Pei, Yan-Gang Wu and Da-Cheng Jia, . Gravity Anomaly Separation based on Bidimensional Empirical Mode Decomposition. Research Journal of Applied Sciences, Engineering and Technology, (21): 4227-4236.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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