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Data Set

Directory Name in the CD :   IRIGM_BOUCHON_FRANCE

DATA PARTICULARS

1. The data sets cover the period following 17 August 1999 Izmit earthquake mainshock and are identifiable as follows:

   1. Data Set 1: Duzce (12 November 1999) main-shock and aftershock records at a small array near Golyaka).

      1. The file names of duzce main-shock records start with "duzce" and

      2. The file names for the aftershocks start with "af."

   2. Data Set 2: Duzce aftershock records following the main shock � continuous recording of the first 16 hours at the station (487) [40.74893N,30.8892E] closest to the fault that caused the 12 November 1999 Duzce earthquake. It should be noted that each of these files contain more than one event.

      1. The N-S components are positive to the South [S+].

      2. The E-W components are positive to the West [W+].

      3. The vertical components are positive Up [+].

   3. Data Set 3: single record at KAR (west of Golcuk) from the 13 September 1999 aftershock. Channel 1 is N-S, Channel 2 is Vertical, and Channel 3 is [EW].

2. Data Set 1 containing Duzce main-shock and aftershock recordings includes data for station 492 (40.742N,30.827E) that has exceeded 0.75 g. Since the data recording parameters has been set to 0.75g max, those that have exceeded it have been interpolated by Fourier transform (Bouchon, pers. comm., 2001).

3. Amplitudes of all data are in g.

4. Sampling rate of all data is 250. Therefore sampling interval is 0.004 seconds.

5. The stations were deployed and operated by staff of the  University of Grenoble and Kandilli Observatory Seismology Section.