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中国科学:地球科学（英文版）
中国科学:地球科学（英文版）

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中国科学:地球科学（英文版）/Journal Science China(Earth Sciences)CSCDEISCI
查看更多>>《中国科学》是中国科学院主办、中国科学杂志社出版的自然科学专业性学术刊物。《中国科学》任务是反映中国自然科学各学科中的最新科研成果，以促进国内外的学术交流。《中国科学》以论文形式报道中国基础研究和应用研究方面具有创造性的、高水平的和有重要意义的科研成果。在国际学术界，《中国科学》作为代表中国最高水平的学术刊物也受到高度重视。国际上最具有权威的检索刊物SCI，多年来一直收录《中国科学》的论文。1999年《中国科学》夺得国家期刊奖的第一名。
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    Identifying and localizing of seismogenic electromagnetic anomalies from data observed by permanent MT stations

    Bing HANWenbao HUGuoze ZHAOJi TANG...
    1698-1713页
    查看更多>>摘要：In this research,an arbitrarily oriented electric dipole at subsurface is used to simulate Seismogenic Electromagnetic(SEM)radiation emanating from a seismic zone during its gestation phase.Analytical synthesis of responses at the Lijiang magnetotelluric(MT)station has revealed that SEM radiation could induce identifiable anomalies in the electromagnetic(EM)spectrum,apparent resistivity and phase within specific frequency bands.Background variations were extracted from long-term observation data of Dali and Lijiang MT stations,enabling the identification of SEM anomalies related to the Yunlong and Yangbi earthquakes.Multiple parameters of dipole sources at subsurface were obtained by applying the Differential Ant Colony Optimization(DACO)algorithm to anomalous data of two stations with multi-frequencies and various response functions.The spatial distribution of these predicted dipoles is predominantly clustered in or around the seismogenic area,with their azimuthal orientation aligning towards the seismogenic fault in general.This study has demonstrated the potential of using subsurface electric dipole simulations for SEM radiation analysis,offering a feasible approach for the prediction and understanding of seismogenic zones.
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    • 维普

    Does the continuous wetting of the Tibetan Plateau contribute to the accelerated degradation of permafrost?

    Yuyang WANGJinzhi DINGShilong PIAO
    1714-1718页
      原文链接:
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