1. Global Seismograph Network - GSN:

DATES OF OPERATION:     10 Dec 1996 to Present.

SEISMOMETER TYPE AND ADC:  Streckeisen model STS-1/VBB. A three component system
for broadbnad, long period and very long period channels continuously recorded
at 20, 1, and 0.1 sps respectively.  Streckeisen model STS-2 triaxial seismometer
short period channels recorded at 40 sps continuous mode.  Kinemetrics FBA-23
three component force balance accelerometer recorded at 1 sps continuous mode
and at 100 sps triggered mode. Data acquisition system is IDA MK7.

CALIBRATION EPOCHS:	1996, 345 - Present

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. 

Click on any of the following items for further information.

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