| 南北地震带及青藏块体东部垂直形变与地震活动研究 |
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| 引用本文： | 张四新,江在森,王双绪.南北地震带及青藏块体东部垂直形变与地震活动研究[J].西北地震学报,2003,25(2):143-148. |
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| 作者姓名： | 张四新 江在森 王双绪 |
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| 作者单位： | 中国地震局第二地形变监测中心,陕西,西安,710054 |
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| 基金项目： | 国家重点基础研究《大陆强震机理与预测》项目(G1998040703) |
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| 摘 要： | 通过对南北地震带及青藏块体东部各形变监测区近30年区域水准资料的计算分析，发现地壳运动和地震活动之间存在一定的呼应关系，地壳运动呈激烈的继承性运动，地震处于弱活动阶段；地壳运动继承性减弱(或呈逆继承性运动)，地震处于强活跃阶段，地震活动强弱在时间上明显滞后于地壳运动，二活动方式具有明显的波动性和周期性。现今地壳运动在运行到波谷后呈缓慢增强的继承性运动，估计未来几年内南北地震带地震活动仍将维持现状，不会出现明显的增强趋势。
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| 关 键 词： | 南北地震带 垂直形变 地震 |
| 文章编号： | 1000-0844(2003)02-0143-06 |
| 收稿时间： | 2001/12/10 0:00:00 |
| 修稿时间： | 2001年12月10 |
STUDY ON VERTICAL DEFORMATION AND SEISMICITY IN CHINESE NORTH-SOUTH SEISMIC BELT AND EASTERN QINGHAI -XIZANG BLOCK |
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| ZHANG Si-xin,JIANG Zai-sen and WANG Shang-xu.STUDY ON VERTICAL DEFORMATION AND SEISMICITY IN CHINESE NORTH-SOUTH SEISMIC BELT AND EASTERN QINGHAI -XIZANG BLOCK[J].Northwestern Seismological Journal,2003,25(2):143-148. |
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| Authors: | ZHANG Si-xin JIANG Zai-sen and WANG Shang-xu |
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| Institution: | The Second Crustal Defomation Monitoring Center, CSB, Shanxi Xi''an 710054, China,The Second Crustal Defomation Monitoring Center, CSB, Shanxi Xi''an 710054, China and The Second Crustal Defomation Monitoring Center, CSB, Shanxi Xi''an 710054, China |
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| Abstract: | By calculating and analysing the regional leveling measurement record in near 30 years in Chinese north-south seismic belt and eastern Qinghai-Xizang block, the corresponding relation between crust movement and seismic activity is discovered. During crustal movement represents strong inheritance motion, seismicity is weaker; when inherited movement is abated or represents counter-inheritance motion, seismicity is stronger. The transposition of strengthening and weakening of seismicity is obviously delayed to one of crustal movement, and both activities are periodic and fluctuated. Nowadays crustal movement is enhanced inheritance motion after running to valley, so seismic activity will possibly keep situation and not be enhanced in some future years in Chinese no rth-south seismic belt. |
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| Keywords: | Chinese north-south seismic belt Vertical crust deformation Earthquake |
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