1. Global Seismograph Network - GSN:

DATES OF OPERATION:     01 Oct 2008 to Present.

SEISMOMETER TYPE AND ADC:
Teledyne Geotech KS-54000 borehole 3 component system for broadband and long
period channels recorded at 20 sps and 1 sps respectively. 
Since August 26, 2009, Trillium 240 seismometer for short period and long period channels recorded 
at 40sps and 1sps, respectively. 
Before August 26, 2009, Streckeisen model STS-2 triaxial seismometer for short period and long
period channels recorded at 40 sps and 1 sps, respectively. 
Quanterra Q330HR data aquisition system.

CALIBRATION EPOCHS:     2008, 275 -  Present 

DIGITAL FORMAT:  32 bit integer data words for broadband (20 sps), long period
(1 sps), and short period (40 sps) 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