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线源地震影响场计算模型的实现
Realization of calculation model of line-source seismic effect fields
- DOI:
- 作者:
- 李铂1），2)，董翔1），2)，陈亚红3)，何琳4) ，于澄2)
Li Bo12)，Dong Xiang12)，Xiao Lanxi3)，He Lin4) ，Yu Cheng2)
- 作者单位:
- 1）中国合肥230026 中国科学技术大学2）中国济南250014 山东省地震局3）中国菏泽274000 菏泽市地震局 4）中国合肥230026 安徽省地震局
1）University of Science and Technology of China, Hefei 230026, China2）Seismological Bureau of Shandong Province, Jinan 250014, China3）Seismological Bureau of Heze , Heze 274000, China4）Seismological Bureau of Anhui Province, Hefei 230026, China
- 关键词:
- 地震烈度；衰减模型；影响场；线源模型；极震区
earthquake intensity；attenuation model；effect field； line-source model；meizoseismal area
- 摘要:
-
传统的烈度衰减关系一般是由历史地震等震线资料拟合得到，但基于历史震例进行统计回归所得到的椭圆衰减模型往往不能够反映大地震时的地震衰减特点。尝试提出基于点源模型改进的线源地震影响场计算模型，引入地表破裂尺度对原有烈度衰减模型进行长轴修正，以期达到生成结果与强震实际烈度相拟合的目的,并可实现极震区震害的快速评估和计算。
Traditional intensity attenuation relation is generally achieved by fitting seismic data of historical earthquakes. However, elliptical attenuation model from statistical regression based on seismic cases in history cannot usually reflect attenuation characteristics in megaseism, an improved calculation model of line-source seismic effect field based on point source model is presented in this essay, introducing the major axis correction of original intensity attenuation model by surface rupture size to match generated result to actual intensity of microseism, and to assess and calculate seismic damages in meizoseismal area promptly.
