Abstract

The author of a comment (Li, 2011) on our 2010 paper (Hao and Zheng, 2010) said that our dip angle seems too small to produce the observed large deviations in back-azimuth and slowness at LZDM International Monitoring System (IMS) Seismic Array. He used forward modeling to show that a large dip angle on the Moho is needed to match the large observed deviations. In this reply, we recalculated our forward model based on the equations given by Niazi (1966) and found that the small dip angle in our original paper resulted from using a negative sign in equation (7) of Niazi (1966) for the calculation of the n value; using a positive sign in the expression of the n value gave rise to a large dip angle of about 53° in accordance with Li (2011). We also verified that only the positive sign can lead to the results given in the tables (Fig. 1) supplied by Niazi (1966) and the tables (Fig. 2) given by Ram and Yadav (1984). Thus, …

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