3. Global Seismograph Network - GSN:

DATES OF OPERATION:     09 Nov 2003 to 21 May 2009.

SEISMOMETER TYPE AND ADC:
Teledyne Brown model KS-54000 borehole 3 component system for broadband,
long period, and very long period channels recorded at 20 sps, 1 sps and
0.1 sps respectively. Guralp systems model CMG-3T 3 component seismometer
for short period, long period, and very long period channels recorded at 40 sps,
1 sps and 0.1 sps respectively. Kinemetrics FBA-23 3-component force
balance accelerometer recorded at 1 sps continuous mode and at 100 sps
triggered mode. IDA MK8 data aquisition system.

CALIBRATION EPOCHS:     2003, 313 -   2009, 141  

DIGITAL FORMAT:  32 bit integer data words for broadband (20 sps), long period
(1 sps), very long period (.1 sps), and short period (40 sps) channels. 16-bit
integer data words for extremely short period (100 sps) triggered channels.

Click on any of the following items for further information.

• Amplitude Response to Ground Velocity
• Seismic Noise Study graph information
  • Seismic Noise Level - Annual
  • Seismic Noise Level - Seasonal/Diurnal
• Channel Data