Covid-19 first laid the Chinese economy low.
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
July 28, 2020
Public health experts, industry leaders, and practitioners share their thoughts on the future of public health and how global collaboration can shape an outcome beneficial to us all.
Events
August 5, 2020 - 4:00pm
During this digital report launch, PEN America and our panelists will discuss the pressures filmmakers confront and the choices they make in order to have their films be shown in China.
August 20, 2020 - 4:00pm
The USC U.S.-China Institute presents a webinar with Han Li to examine how Chinese are rediscovering the rural China and idealizing rural life in the social media age. She'll also look at the social and political forces driving this trend.