The method of integrated Green's function for the calculation of the tilt(?)load tide proposed by this paper is sn improvement and s development of the current widely used method proposed by Farrell, and it is s n...The method of integrated Green's function for the calculation of the tilt(?)load tide proposed by this paper is sn improvement and s development of the current widely used method proposed by Farrell, and it is s new method of calculation. According to this method, the integrated Green's function of tilt load tide has been calculated first, then on the basis of the cotidal charts the tilt load tide caused by the oceanic tides at any point on the continent can be easily calculated through algebraic procedures. As an example of application of this method the tilt load tides of M_2 have been calculated on the basis of cotidal charts of Schwiderski for the following three stations: Wuchang, Tai'an and Xuzhou.展开更多
Based on the load model of a uniform isotropic semi-infinite elastic medium,we deduced a calculation of vertical displacement and tilt and proposed a method of calculation of vertical displacements and tilts caused by...Based on the load model of a uniform isotropic semi-infinite elastic medium,we deduced a calculation of vertical displacement and tilt and proposed a method of calculation of vertical displacements and tilts caused by irregular load on the ground or underground at a certain point with two-dimensional and three-dimensional shapes. We compared the difference between the simplified model and the irregular model. Finally,the vertical displacements near the irregular load and the distribution of horizontal tilt are presented.The results show that,compared with the point simplified model,the irregular load model has certain advantages for describing the near field. The establishment of a twodimensional irregular load model can help with the calculation of the modal vector superposition after load scattering. The three-dimensional irregular load model can redistribute load through different weights given to the scattered points after the load scattering,and then obtain displacement with the vector calculation method. The results of vector superposition calculation from the scattered irregular load both in two-dimensions and three-dimensions are all convergent obviously as grids become denser,and it is shown that the calculation method is correct and feasible.展开更多
文摘The method of integrated Green's function for the calculation of the tilt(?)load tide proposed by this paper is sn improvement and s development of the current widely used method proposed by Farrell, and it is s new method of calculation. According to this method, the integrated Green's function of tilt load tide has been calculated first, then on the basis of the cotidal charts the tilt load tide caused by the oceanic tides at any point on the continent can be easily calculated through algebraic procedures. As an example of application of this method the tilt load tides of M_2 have been calculated on the basis of cotidal charts of Schwiderski for the following three stations: Wuchang, Tai'an and Xuzhou.
基金funded by the Earthquake Tracing Oriented Task of Monitoring and Forecasting Department of China Earthquake Administration in 2015(2015020201):the 12th“Five-year Plan”Science and Technology Support Plan of China(2012BAK19B02)
文摘Based on the load model of a uniform isotropic semi-infinite elastic medium,we deduced a calculation of vertical displacement and tilt and proposed a method of calculation of vertical displacements and tilts caused by irregular load on the ground or underground at a certain point with two-dimensional and three-dimensional shapes. We compared the difference between the simplified model and the irregular model. Finally,the vertical displacements near the irregular load and the distribution of horizontal tilt are presented.The results show that,compared with the point simplified model,the irregular load model has certain advantages for describing the near field. The establishment of a twodimensional irregular load model can help with the calculation of the modal vector superposition after load scattering. The three-dimensional irregular load model can redistribute load through different weights given to the scattered points after the load scattering,and then obtain displacement with the vector calculation method. The results of vector superposition calculation from the scattered irregular load both in two-dimensions and three-dimensions are all convergent obviously as grids become denser,and it is shown that the calculation method is correct and feasible.
