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吸收特征时间
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  “吸收特征时间”译为未确定词的双语例句
     and get t(?) perturbation and reduce a relation between δt(?) and perturbationδQ in a form of spherical harmonic function which was developed by A.
     Duda所导出的吸收特征时间t~*与震中距离△的关系,由地震台网观测的地震波振幅A和周期T,求得观测的t_0~*,及t_0~*~△的关系函数,用以拟合不同周期范围地震波品质因数Q 值随深度的分布Q(h),从而计算理论的t~*,再由t~*的残差δt~*与δQ 的关系参照A.
短句来源
     It has been proved in this paper that there exist certain relations between starting function of surface wave magnitude and Lg wave one and characteristic time of seismic wave absorption and crustal quality factor. Therefore Q—value imagery is feasible making use of amplitude and period data of surface wave and Lg wave.
     本文首先证明了远震面波,近震Lg波震级起算函数和地震波吸收特征时间t及地壳品质因数Q值之间具有一定的联系,从而可利用面波及Lg波振幅周期资料进行Q值成象。
短句来源
     At first, the calculation of a model is made and compared with the Q value distribution by the inversion of ART method, the simulation on computer shows that the relative deviation of Q value is 6 8% between these two cases.
     作了模型正演计算求得吸收特征时间t*,接着用这些t*求反演的Q值分布作比较,求出Q值的相对误差的空间分布在6-8%,说明这种方法用于Q值反演的正确性。
短句来源
     Then, after instrumental and site effect correction, theoretical amplitude spectra are made to fit observed amplitude spectra with nonlinear damping least square method to get the observed differential attenuation, provided that earthquake sources conform to Brune′s disk dislocation model.
     然后 ,假设震源符合布伦圆盘位错模式 ,在对仪器和场地效应校正之后 ,用非线性阻尼最小二乘法对理论振幅谱和观测振幅谱进行拟合 ,从而得到观测吸收特征时间 ;
短句来源
     Finally, theoretical differential attenuation is made to fit observed differential attenuation with nonlinear damping least square method.
     最后 ,利用三维射线追踪方法 ,对理论吸收特征时间与观测吸收特征时间进行非线性阻尼最小二乘拟合 .
短句来源
  相似匹配句对
     (5) time is feature.
     (五)时间特征
短句来源
     (5) time is feature.
     5.时间特征
短句来源
     Time is...
     时间
短句来源
     Time
     时间
短句来源
     Cells with microvilli also show the features of absorptive cells.
     微绒毛细胞呈现吸收细胞的特征 ;
短句来源
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In this paper,the authors use the spherical harmonic function to fit seismic-wave's Q-value distribution in earth-mantle;At first we calculate the absorption charac-teristic time t(?) and get t(?) perturbation and reduce a relation between δt(?) and perturbationδQ in a form of spherical harmonic function which was developed by A.M.Dziewonski.We get t(?) of P-wave with epicentral distance relation according to the seismic observationaldata (A/T).We estimate Q-distribution with depth h for various seismic-wave...

In this paper,the authors use the spherical harmonic function to fit seismic-wave's Q-value distribution in earth-mantle;At first we calculate the absorption charac-teristic time t(?) and get t(?) perturbation and reduce a relation between δt(?) and perturbationδQ in a form of spherical harmonic function which was developed by A.M.Dziewonski.We get t(?) of P-wave with epicentral distance relation according to the seismic observationaldata (A/T).We estimate Q-distribution with depth h for various seismic-wave period in-terval by using of t(?)~(?) relation and use spherical harmonic function to fit 3D Q-value dis-tribution in earth-mantle.

本文引用S.J.Duda所导出的吸收特征时间t~*与震中距离△的关系,由地震台网观测的地震波振幅A和周期T,求得观测的t_0~*,及t_0~*~△的关系函数,用以拟合不同周期范围地震波品质因数Q 值随深度的分布Q(h),从而计算理论的t~*,再由t~*的残差δt~*与δQ 的关系参照A.M.Dzjewonskj 拟合地幔地震波速度三维分布的方法运用球谐函数的关系拟合地幔地震波品质因数Q 值的三维空间分布。

It has been proved in this paper that there exist certain relations between starting function of surface wave magnitude and Lg wave one and characteristic time of seismic wave absorption and crustal quality factor. Therefore Q—value imagery is feasible making use of amplitude and period data of surface wave and Lg wave. According to the surface data including 1481 seismic ray, we make inversion for crustal quality factor in some region where North china and Northeast china meet (35°—44°N, 115°—124°E)and give...

It has been proved in this paper that there exist certain relations between starting function of surface wave magnitude and Lg wave one and characteristic time of seismic wave absorption and crustal quality factor. Therefore Q—value imagery is feasible making use of amplitude and period data of surface wave and Lg wave. According to the surface data including 1481 seismic ray, we make inversion for crustal quality factor in some region where North china and Northeast china meet (35°—44°N, 115°—124°E)and give its space distribution. The result is possessed of certain geophysical significance.

本文首先证明了远震面波,近震Lg波震级起算函数和地震波吸收特征时间t及地壳品质因数Q值之间具有一定的联系,从而可利用面波及Lg波振幅周期资料进行Q值成象。其次,作为实验,利用1481条地震面波射线资料反演了东北和华北交界某区域(北纬35°—44°,东经115°—124°)内地壳品质因数Q值的空间分布。初步看,结果具有一定的地球物理意义。最后,论述了应用Lg波资料反演松辽地台地壳品质因数Q值的必要性和可能性。

The inversion of spatial distribution of surface wave′s Q value by using algebraic reconstruction technique(ART) method is introduced. At first, the calculation of a model is made and compared with the Q value distribution by the inversion of ART method, the simulation on computer shows that the relative deviation of Q value is 6 8% between these two cases. We introduce the formula given by S.J. Duda to get the relation between the absorption characteristic time t * and calibrating function of earthquake...

The inversion of spatial distribution of surface wave′s Q value by using algebraic reconstruction technique(ART) method is introduced. At first, the calculation of a model is made and compared with the Q value distribution by the inversion of ART method, the simulation on computer shows that the relative deviation of Q value is 6 8% between these two cases. We introduce the formula given by S.J. Duda to get the relation between the absorption characteristic time t * and calibrating function of earthquake magnitude Ms and amplitude A period T & velocity U of corresponding surface waves, by many times of iterated reconstruction get the Q value distribution by using ART method, for the area within 25°-40°N and 100°-115°E.

本文用代数重建(简称ART)法,反演面波的品质因数Q值分布;作了模型正演计算求得吸收特征时间t*,接着用这些t*求反演的Q值分布作比较,求出Q值的相对误差的空间分布在6-8%,说明这种方法用于Q值反演的正确性。用中国地震台网观测报告中振幅和周期,对1966年以后的518个地震事件,共3000多条射线,基于S.J.Duda提出的由震级起算函数的方法,计算每一条射线的t*,然后对中国中部地区,取经纬度范围在25°-40°N,100°-115°E,由ART法反演了面波Q值空间分布。

 
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