摘要
详细的分析了震中矩对竖直向地震动持时的影响.利用美国强震记录,在Ⅱ类场地上,对震级和震中矩进行分组,研究在每一组内的平均能量持时,进而得出持时与震中矩之间的关系.通过研究发现,在不同震级时表现出来的规律性不同,但总体而言随着震中矩的增大,持时相应的变长.另外,震级对持时的影响也较大,不容忽视.
The influence of epicenter distance on vertical earthquake ground motion duration was discussed based on American strong ground motion records. It is notable for the influence of epicenter distance on earthquake ground motion duration through analysis. In the study, regularity is different on various magnitudes. As a whole, the greater the epicenter distance is, the longer the duration is. The influence of magnitude on duration is eomiderable, so it may not be neglected.
出处
《佳木斯大学学报（自然科学版）》
CAS
2009年第4期493-494,513,共3页
Journal of Jiamusi University：Natural Science Edition
基金
黑龙江省教育厅科学技术研究项目资助(11541367)
佳木斯大学科技基金项目(L2008-074)
关键词
持时
震中矩
场地条件
震级
竖直向地震动
duration
epicenter distance
site condition
magnitude
vertical ground motion
