Data files from " Seismic tomography off SW Taiwan: a joint inversion from OBS and onshore data of 2006 
Pingtung aftershocks"

by Yen-Che Liao, Shu-Kun Hsu, Chien-Hsing Chang, Wen-Bin Doo, Mei-Yi Ho, Chung-Liang Lo and Chao-Shing Lee


  Eleven OBSs were deployed in the offshore area of southwest Taiwan for one week after the Pingtung 
earthquake, from 5:00 PM, Dec. 27, 2006 to 11:00 PM, Jan 3, 2007 (UT). The OBS sensor is GS-11D with
a natural frequency of 4.5 Hz from Geo Space manufactory. The acquisition system is based on a 4-channel
24 bits CS5372/76 analog to digital conversion together with input signal amplification. The sampling
rate of our data was set as 125 Hz. Clock was based on GPS clock and the drift time before and after
the deployment was corrected by using a liner interpolation. 

  For documentation purposes, we provided relevant data files, including P-velocity model, relocation
results, and event waveforms from our paper in this special issue.

The package contained a readme and three data files in ASCII text format described in our paper :


README:
  an ASCII text file of this note.
	 
Liao_etal_P _velocity.txt:
  Containing coordinate of grid points, percente of velocity changes and absolute velocity of our result
in this special issue, and are grouped by layer. Because of the limitation of ray path, parts of these
data are unreliable. Please careful when using this data set.

Liao_etal_Relocation.txt:
  Containing the origin time, relocated epicenter, and magnitude information of 439 events. The magnitude 
information were defined by Central Weather Bureau (CWB). Magnitude 0.00  means the event was only located
from OBS data.

Other explanations were listed below the main contents.
	 
OBS_locations.txt:
  The coordinates of OBSs were listed in the ASCII format file.
Explanations were listed under the main contents, too.


Reference:
Liao, Y. C., S. K. Hsu, C. H. Chang, W. B. Doo, M. Y. Ho, C. L. Lo and C. S. Lee, 2008: Seismic tomography
  off SW Taiwan: a joint inversion from OBS and onshore data of 2006 Pingtung aftershocks. Terr. Atmos. Ocean.
  Sci. Special Issue.