2. Global Seismograph Network - GSN:

DATES OF OPERATION:     21 Mar 2003 to 01 July 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
short period, long period, and very long period channels recorded at 40 sps, 
1 sps, and 0.1 sps respectively. Kinemetrics FBA-23 three component force 
balance accelerometer recorded 1 sps continuous mode and at 100 sps 
triggered mode.  IDA MK8 data acquisition system.

CALIBRATION EPOCHS:     2003, 080 -  2011, 182 

DIGITAL FORMAT:
32 bit integer data words for broadband (20 sps), long period (1 sps), very
long period (0.1 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