Estimating crustalÿparametersÿusingÿjoint inversionÿofÿreceiver-function and gravity data

In the exploitation of the mineral resources, deep subsurface structure research can explain the formation mechanism of resources and guide proper resource assessment. Receiver-function is an effective method to solve problems related to deep structure. Based on the uncertainty of this method, which relies on data quality, a kind of constraint should be introduced. The observed gravity anomalies are mainly composed of crustal gravity and Moho gravity. The former is closely related to crustal density (σ) and velocity ratio (k), vp/vs, while the latter is related to crustal thickness (H). Therefore, gravity inversion can provide H, σ and k, furthermore, it can constrain the H-k stacking, to guarantee the computational precision. Testing on the model data, we found that this method has an effective constraint for H-k stacking of seismic receiver- function amplitudes and it can be used for real data.