A model for the high-cut process of strong-motion accelerations in terms of distance, magnitude, and site condition: An example from the SMART 1 array, Lotung, Taiwan

Parameters controlling the high-cut process of strong-motion accelerations are analyzed using the recordings collected from the SMART 1 array in Lotun g, Taiwan, A regression model in terms of distance, earthquake magnitude, a nd site condition is generally found to be suitable to describe the paramet ers under investigation. Results show that the high-cut process is controll ed by both the site and source effects, which might bring resolution to the long-standing controversy over the origin of the cutoff frequency. In this note, it becomes almost certain that distance is the least significant par ameter controlling the high-cut process.