在地震危险性分析中，历史地震资料是确定地震活动性参数的关键。
The historical seismic data are the key determining seismicity parameter in seismic hazard analysis.
断层上断点埋深是隐伏活动断层地震危险性评价中的一个重要参数。
Buried depth of fault up-breakpoint is a important parameter in earthquake risk estimate of buried active fault.
对2003年北黄海5.1级地震的地震活动背景、地震序列、震中周围中小地震活动图像及地震学参数等进行了详细分析。
It was analyzed that seismicity background, earthquake sequence, seismicity pattern of moderate-small earthquake around epicenter and seismology parameter of Beihuanghai M_L5.1 earthquake in 2003.
本文采用时间扫描方法，画出五种地震活动性参数曲线。
In this paper, five kinds of curves of seismic activity parameter ware drawn by temporal scan method.
本文选取地震活动图像演化和地震学参数变化两项指标，采用有时间段的时空扫描进行演化研究，逐步将这种演化研究推进到短期阶段进行跟踪研究。
Tracing research of the earthquake activity was made in this paper using the time-space scanning by selecting the two indexes of the seismicity pattern evolution and seismology parameter change.
本文在研究秦皇岛市区域地震地质环境和地震活动规律的基础上，确定了区域潜在震源区及相应的地震活动性参数。
Based on the study of regional seismic environment and seismic periodicity, the potential seismic source zones and their activity parameters are determined.
根据活动构造参数估计地质地震活动性，能克服历史地震记载时间短的局限性。
Geological seismicity estimated from parameters of active tectonics will overcome the limitation of short historical records of earthquake occurrences.
根据这些定量参数，评价活动构造地震的危险性，同时，还简要地讨论了大陆内部现代构造活动的动力学问题。
These quantitative parameters can be applied to assess the seismic risk of active tectonics. The geodynamics for recent tectonic movement in the interior of the continent is also discussed in brief.
根据这些定量参数，评价活动构造地震的危险性，同时，还简要地讨论了大陆内部现代构造活动的动力学问题。
These quantitative parameters can be applied to assess the seismic risk of active tectonics. The geodynamics for recent tectonic movement in the interior of the continent is also discussed in brief.
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