Data set of manuscript entitled "Slip distributions of short-term slow slip events in Shikoku, southwest Japan from 2001 to 2019 based on tilt change measurements" submitted to the Journal of Geophysical Research: Solid Earth
The National Research Institute for Earth Science and Disaster Resilience (NIED) tilt offset dataset for the paper "Slip distributions of short-term slow slip events in Shikoku, southwest Japan from 2001 to 2019 based on tilt change measurements" submitted to Journal of Geophysical Research - Solid Earth by H. Hirose and T. Kimura and its related files are presented.
In the paper, they applied an inversion method that can express a spatial fault slip distribution to the offset data in Shikoku in order to obtain a set of slip distributions of short-term Slow Slip Events (SSEs) from January 2001 to March 2019. They also discussed the temporal change in the activity of the short-term SSEs for 18 years based on the catalog.
The tilt time-series data observed at NIED Hi-net stations were preprocessed such as removal of tidal components, an atmospheric pressure response correction and removal of a linear trend (Hirose & Obara, 2005). The tilt offset was measured as the difference between the averages of preprocessed tilt data in two one-day-long time intervals just before and after an SSE episode (the length of the averaging time interval can vary on a case-by-case basis). At the same time, the standard deviation of the same time intervals, which was used for weighting data in the inversion, was also calculated.
- tiltstep.tar.gz: Archive file that contains tilt offset files for all of the slow slip episodes analyzed in the paper
- README: README file for the archive
- tiltdata_table.pdf: References for the dataset
- preprocessed tilt time-series data examples shown in Figure S1 in the paper
- Each datafile contains North or East component of tilt records; each record has time epoch (columns of year month day hour minute) and tilt (in radian)
- tilt_data_200604.tar.gz: Preprocessed tilt time-series data for 200604 SSE shown in Figure S1a in Hirose and Kimura
- tilt_data_201802.tar.gz: Preprocessed tilt time-series data for 201802 SSE shown in Figure S1b in Hirose and Kimura
2020-05-01