*待解决

1. Why the magnitude inverted by HMC and GS is so different?
2. integrate Hessian matrix into HMC sampler.

*待思考

1. Whether there is tradeoff between source type and magnitude?
2. Whether the magnitude will be smaller when moving from 1D velocity model to 3D velocity model?
3. What causes the bad-fit events among different catalogs? fault or basin?

*待画图

1. 表示HMC和GS的uncertainty, there are two ways:

   1. 统一画到lune diagram上面，with all hmc samples and grid search misfit distribution;
   2. 直方图 or beachball上的阴影区域。