地震震中位置的确定与震区地形图的绘制
首发时间:2009-07-14
摘要:本文在对题目进行深入理解和分析的基础上,将此问题归结为地震定位和震区地形图的绘制问题。问题一中我们根据已知的地震观测点的坐标位置和地震接收时间,提出了Geiger的经典定位方法和两点间距离与时间位移关系模型进行求解,最终得出震中位置及地震发生时间。问题二是一个地形绘制问题,本文运用插值拟合和像素点采样方法,从两个角度建立了模型并计算求解,两种取坐标值的方法,都行之有效地绘制出三维地貌图。该方法对应每一个样点通过像素点变换函数得出实际的平面坐标,并采用加权法计算出高程,减少用人工计算样点带来的误差。
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To determine the location of the earthquake epicenter and the seismic area topographic mapping
Abstract:This article on the topic in-depth understanding and analysis on the basis of this issue boils down to the earthquake location and seismic area topographic mapping problem. The issue of one China, according to the known coordinates of the earthquake location of observation points and seismic receiver time, Geiger made a classic positioning methods and the distance between two points in the relationship between displacement and time to solve the model in order to work out the earthquake epicenter location and time. Second problem is a problem of terrain mapping, this paper fitting interpolation and pixel sampling method, from two points of the establishment of the model and calculate the solution of the two methods take coordinates are effective to draw three-dimensional topographic maps. This method corresponds to each sample point through the pixel transform function to draw the actual coordinates of the plane, using a weighted method to calculate the height, to reduce the use of the calculation error caused by sample.
Keywords: Earthquake location Geiger method Fitting interpolation Three-dimensional topography
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