Happy Lunar New Year from the USC US-China Institute!
Li, "Earthquake location problems in eastern Taiwan," 1995
USC thesis in Security.
August 26, 2009
Cheng-Ping Li, M.S.
Abstract (Summary)
The SMART 2 and HTN arrays of eastern Taiwan recorded 3-component digital data in 1991. Due to the synchronization problem, the conventional location method using the first P-arrival time can not be applied. Since the S-arrival can be picked considerable accuracy using digital 3-component data, we attempt to locate earthquakes by using Ts-Tp only.
We seek the best solution in the least squares sense through a non-linear optimization process. A location program is developed and tested based on S-P intervals and 3-D ray-tracing programs. Results showed that the accuracy of relocation strongly depends on the station distribution, model definition, and the accuracy of P- and S-picking. The hypocenters were consistently shifted from east to west, implying a lower velocity underneath the island of Taiwan. The particle motion is used to discriminate the contradicting relocation results from different data sets.
Advisor: Teng, Ta-Liang
Featured Articles
January 4, 2024
We note the passing of many prominent individuals who played some role in U.S.-China affairs, whether in politics, economics or in helping people in one place understand the other.
Events
Thursday, March 21, 2024 - 4:00pm PST
Ying Zhu looks at new developments for Chinese and global streaming services.
Tuesday, March 19, 2024 - 4:00pm
David Zweig examines China's talent recruitment efforts, particularly towards those scientists and engineers who left China for further study. U.S. universities, labs and companies have long brought in talent from China. Are such people still welcome?