1. Global Seismograph Network - GSN:

DATES OF OPERATION:	15 Oct 1998 to Present.

SEISMOMETER TYPE AND ADC:
Streckeisen Model STS-1/VBB, 3 component system for broadband, long period, and
very long period channels recorded at 20, 1 and 0.1 sps respectively.
Streckeisen Model STS-2 triaxial seismometer for 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.  IDA MK7 data acquisition system.

CALIBRATION EPOCHS:	1998, 288 - Present

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