Identifying and Correcting Timing Errors at Seismic Stations in and around Iran

Syracuse, dkk.

Penerbit : Seismological Research Letters

Tahun : 2017

A fundamental component of seismic research is the use of phase arrival times, which are central to event location, Earth model development, and phase identification, as well as derived products. Hence, the accuracy of arrival times is crucial. How- ever, errors in the timing of seismic waveforms and the arrival times based on them may go unidentified by the end user, par- ticularly when seismic data are shared between different organ- izations. Here, we present a method used to analyze travel-time residuals for stations in and around Iran to identify time peri- ods that are likely to contain station timing problems. For the 14 stations with the strongest evidence of timing errors lasting one month or longer, timing corrections are proposed to ad- dress the problematic time periods. Two additional stations are identified with incorrect locations in the International Registry of Seismograph Stations, and one is found to have erroneously reported arrival times in 2011.

Pengarang