中文摘要：

利用形变资料反演火山区压力源参数时,Mogi模型线性化后的系数矩阵由于条件数较大,法矩阵求逆出现不稳定。对长白山火山区压力源参数的反演应用证明,利用L曲线法确定岭参数,可以方便快捷地解决矩阵奇异时求解的困难。

英文摘要：

When inversing the pressure source parameters of a volcanic area by use of deformation data, the condition of coefficient matrix after linearization is too bigger to get a stable inversion of normal matrix. L-curve method is used for determining ridge parameter with the theoretical and real data in Changbaishan-Tianchi volcano. The results indicate that L-curve can solve ill-posed problem fast and conveniently.