The study of crustal structure in Taiwan region using receiver function
Speaker: Ching-Hsien Huang
Abstract
Receiver function (RF), one of the most efficient methods to detect the Moho depth. There are many studies using receiver function to estimate the crustal thickness, and thus to interpret the crustal and mantle structure in Taiwan. Both of these two papers, they selected the data of BATS broadband network, but they used different method to explore the Moho depth in Taiwan region.
In Kim et al., 2004, they used the method “Maximal Likelihood Estimation” to calculate the Moho depth beneath station. The Moho depth at station KMNB is about 30-32 km, and in NACB is 50 km, it is the deepest station is this study.
In Wang et al., 2010, they used “H-κ stacking method” of Zhu and Kanamori [2000] to estimate crustal thickness and Vp/Vs ratio for each station. Moho is shallow in northern part of Taiwan (17–32 km), and deep in southwestern (32–39 km). The deepest Moho is 53 km beneath the station SSLB in central Taiwan. The result of the crustal thickness variation could be supported by gravity measurements.
Although they calculated the deepest Moho station in the different, but the overall trend is consistent with two papers.
Reference
Kim, K. H., Chiu, J. M., Kao, H., Kao, L, Q., and Yeh, Y. H. (2004), A preliminary study of crustal structure in Taiwan region using receiver function analysis, Geophys. J. Int. (2004) 159, 146–164 .
Wang, H. L. , Zhu, L. P., Chen, H. W. (2010), Moho depth variation in Taiwan from teleseismic receiver functions. Journal of Asian Earth Sciences 37 (2010) 286–291