1. Global Seismographic Network - GSN:

DATES OF OPERATION:	02 Feb 1997 to Present.

SEISMOMETER TYPE AND ADC: 
Streckeisen model STS-2 triaxial seismometer for broadband (40 sps), long
period and very long period channels. Streckeisen model STS-1/VBB. A three
component system for broadband, long period, and very long period channesl 
recorded at 20, 1 and 0.1 sps respectively.  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 EPOCH:	1997, 033 - Present

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.

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