在压缩源激发下，真空-弹性表面的精确二维响应。（Garvin问题） 英文描述中有相关参考文献，对于做波场模拟的同学很有用。-THIS FORTRAN PROGRAM CALCULATES THE EXACT SEISMIC 2D RESPONSE FROM A COMPRESSIONAL POINT SOURCE IN AN ELASTIC HALFSPACE WITH A FREE SURFACE. ALL GREEN S FUNCTIONS ARE CALCULATED AN

完成采样空间的采样，适合于响应面，近似模型之前的采样工作，文件夹中有具体介绍(The sampling space is completed. It is suitable for the response surface and the sampling work before the approximation of the model. The folders are introduced in detail.)

建立1-4阶响应面代理模型，建立4阶响应面预测模型，对模型精度进行检验(Establishing the fourth order response surface proxy model)