| 陕西地区地壳速度模型研究 |
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| 引用本文： | 惠少兴,金昭娣,宋秀青.陕西地区地壳速度模型研究[J].震灾防御技术,2018,13(2):363-372. |
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| 作者姓名： | 惠少兴 金昭娣 宋秀青 |
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| 作者单位： | 1.陕西省地震局, 西安 710068 |
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| 基金项目： | 陕西省地震局启航与创新基金（201604） |
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| 摘 要： | 本文以陕西地震台网2009年1月—2014年4月地震观测报告数据为基础，并在前人对该区域地壳速度模型研究成果的基础上，依据地震、爆破及塌陷的震相速度拟合曲线与折合走时曲线等结果，确定初始模型及扰动范围。再采用Hyposat定位程序对地震资料进行“试错”，最终确定了可供台网日常使用的地壳速度模型及各层的波速比结果，最后对模型进行了对比检验。结果表明:2015模型比1985模型的定位走时残差小，震中位置偏差减小，确定的实测爆破地震位置参数更准确。2015模型较1985模型更符合陕西地区的地质构造特征。
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| 关 键 词： | 地壳速度模型 1985模型 2015模型 |
| 收稿时间： | 2017/11/8 0:00:00 |
Crustal Velocity Model of the Shaanxi Region |
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| Hui Shaoxing,Jin Zhaodi and Song Xiuqing.Crustal Velocity Model of the Shaanxi Region[J].Technology for Earthquake Disaster Prevention,2018,13(2):363-372. |
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| Authors: | Hui Shaoxing Jin Zhaodi and Song Xiuqing |
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| Affiliation: | 1.Shaanxi Earthquake Agency, Xi'an 710068, China2.Shanghai Earthquake Agency, Shanghai 200062, China |
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| Abstract: | Based on previous studies of the crustal velocity model in the Shaanxi area, we reviewed the seismic curve of "phase velocity fitting curve" of earthquake, and determined blasting and collapse, the initial model and the disturbance range via the seismic observation data of Shaanxi Digital Seismic Network from January 2009 to April 2014. And then, the Hyposat locating program is used to test and verify the seismic data. Finally, the crustal velocity model and the wave velocity ratio of each layer are determined for the daily use of the network. Comparison of the results from different models shows that the 2015 model has smaller residual error and epicentral difference than the 1985 model. The basic parameters of the measured blasting for the 2015 model are also relatively accurate. Therefore, the 2015 model is better in application in the geological structure characteristics of the Shaanxi region than the 1985 model. |
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| Keywords: | Crustal velocity model 1985 model 2015 model |
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