| 东北南部地区地壳均衡状态浅析 |
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| 引用本文： | 李润江,孟令顺.东北南部地区地壳均衡状态浅析[J].地震研究,1989,12(2):137-145. |
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| 作者姓名： | 李润江 孟令顺 |
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| 作者单位： | 东北地震监测研究中心，长春地质学院 沈阳 |
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| 摘 要： | 均衡状态是评价一个地区现今地壳构造活动性的一个重要标志。本文通过对东北南部地区普拉特—海福特均衡重力异常特征的分析,并通过均衡重力异常与深部地壳测深结果、地形趋势面自由空气重力异常以及与艾理均衡重力异常结果的对比分析,以达到:(1)为研究者提供一些基础资料;(2)通过对比分析,进一步了解东北南部地区及海城震区的均衡状态,以期在海城震区深部地球物理特征的研究方面获得进展。
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| 关 键 词： | 地壳均衡状态 均衡重力异常 |
AN ANALYSIS OF CRUSTAL ISOSTATIC STATE IN THE SOUTHERN PART OF NORTHEAST CHINA |
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| Li Runjiang.AN ANALYSIS OF CRUSTAL ISOSTATIC STATE IN THE SOUTHERN PART OF NORTHEAST CHINA[J].Journal of Seismological Research,1989,12(2):137-145. |
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| Authors: | Li Runjiang |
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| Institution: | Li Runjiang (Earthquake Monitoring and Researching Center of Northeast China)Meng Lingshun (Changchun College of Geology) |
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| Abstract: | The isostatic state is an important criterion for evaluating the contemporary crustal structural activities in an area. Through a characteristic analysis of Pratt-Hayford isostatic anomaly in the southern part of Northeast China and compared with the results from the deep seismic sounding, topographic relief free-air anomaly and airy isostatic anomaly, this paper aims at: (1) proving some fundamental data for research workers; (2) further studing the isostaic state of the southern part of Northeast China and the Haicheng seismic area, so as to make progress in reserch work concerning geophysical characteristies in Haicheng area. |
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| Keywords: | Crustal structural activity Isostatic gravity anomaly Deep crustal structure The southern part of Northeast China |
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