| 中国东部重力梯级带的地震地质分析 |
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| 引用本文： | 李安然,成福元,古成志,徐永键.中国东部重力梯级带的地震地质分析[J].地震地质,1984,6(2):53. |
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| 作者姓名： | 李安然 成福元 古成志 徐永键 |
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| 作者单位： | 国家地震局地震研究所
(李安然，成福元，古成志)，国家地震局地震研究所(徐永键) |
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| 摘 要： | 中国东部重力梯级带上的强震震中分布有着明显的分段性。区域重力场及其地震地质分析表明,沿带现代地震活动的不均一性是与其深部构造环境的差异相联系的。因此重力场与地震关系实质上是一个地震与构造的关系问题。区域重力场只有当其综合反映了所在地区(带)存在强震孕育的构造条件方可作为强震发生的一种判别标
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| 关 键 词： | 重力梯级带 地震地质 太行山 重力异常 地震活动 中国东部 区域重力场 国家地震局 布格异常 地壳厚度 |
SEISMOTECTONIC ANALYSIS OF THE GRAVITY ANOMALY GRADIENT BELT IN EASTERN CHINA |
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| Abstract: | The gravity gradient belt studied in this paper is very distinct in Eastern China continent. The distribution of seismicity along the belt is clearly different in various sections. From researching the seismicity and the gravity field character in the belt, the paper analyses the tectophysical environment of strong earthquakes that occurred along the front edge of Taihangshan Mountain. The authors discuss the cause of the difference of the recent seismicity along the belt and the problem about the gravity field indicator in strong earthquake zone, and the like. Finally, the study stresses the point that the relationship between gravity field and seismicity is actually a problem of seismotectonic relationship. If the regional gravity anomaly appears in the mobile geotectonic region and major deep-seated rift in the uplifted edge of upper mantle, and if the regional gravity anomaly accompanies sharp change of deep-seated crustal boundary, geomorphology, crustal deformation and so on, it can be regarded as an indicator to distinguish continental strong earthquake zones |
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