| 我国境内乐夫波的相速度及地壳厚度计算 |
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| 引用本文： | 宋子安,师洁珊. 我国境内乐夫波的相速度及地壳厚度计算[J]. 地震地质, 1986, 8(3): 79 |
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| 作者姓名： | 宋子安 师洁珊 |
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| 作者单位： | 国家地震局地壳应力研究所(宋子安)，国家地震局地壳应力研究所(师洁珊) |
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| 摘 要： | 本文利用三个堪察加地震和两个阿拉斯加地震在我国某些地震台上所记录的乐夫波,进行了相位对比,用最小二乘法分别计算了各地区的乐夫波相速度。将观察的相速度与理论曲线相比较,得到各地区的地壳厚度。 理论曲线系根据多尔曼(Dorman)208模型的数据,采用β_1=3.53公里/秒,ρ_1=2.78克/厘米~3
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| 关 键 词： | 地壳厚度 波的相速度 地震地质 国境 地震台 相位 昆明 武汉 瑞利波 各地区 |
PHASE VELOCITIES OF LOVE WAVES IN CHINA AND CALCULATIONS OF CRUSTAL THICKNESS |
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| Abstract: | In this paper,the phase velocities of Love waves were determined by using the seis-mograms from fifteen stations in China and three earthquakes from Kamchatka and two from Alaska were under use.Correlations between the phases were in evidence in analyzing the variation of periods with distances and also arrival times of the crests of Love waves in the seismograms.The phase velocities of Love waves were calculated by means of a tripartite array,the velocities of Love waves with periods ranging from 15 to 40 seconds being determind.The thickness of earth crust in different regions were calculated by using Dorman case 208 |
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