| 兰州-西安-郑州电导率异常带 |
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| 引用本文： | 杜兴信.兰州-西安-郑州电导率异常带[J].地震学报,1987,9(3):282-288. |
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| 作者姓名： | 杜兴信 |
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| 作者单位： | 陕西省地震局 |
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| 摘 要： | 根据磁暴急始和湾扰变化,发现沿兰州——西安——郑州有一条垂直分量接近于零的过渡带,反映其下存在一条电导率异常带或高导带,本文称之为兰州——西安——郑州电导率异常带.考察沿线的地质和地球物理特征表明,异常带处于特定的构造、地震和地热环境中,推测沿异常带是一地壳软弱带或次板块边界,还推测地磁异常可能与电流通道效应有关.
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CONDUCTIVITY ANOMALY IN THE LANZHOU-XIAN-ZHENGZHOU BELT |
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| Abstract: | It is found, on the basis of 3SC and geomagnetic bays variations, that there is a zone of nearly vanishing Z with a east-west trend along Lanzhou-Xian-Zhengzhou belt. It is called the Lanzhou-Xian-Zhengzhou conductivity anomalous zone. There is some relationship among the following factors from studying the geological and geophysical characteristics along the zone. It is deduced that this zone may be a weak zone in the crust or a boundary between two sub-plates. It is also deduced that this zone may probably be related to the channel effect of the induced current in a larger region. |
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