2. Global Seismograph Network - GSN:

DATES OF OPERATION:     29 Aug 2003 to 03 Oct 2011.

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.  Streckeisen model STS-2 triaxial 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, 241 - 2011, 303 

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