2. Global Seismograph Network - GSN:

DATES OF OPERATION:     22 May 2009 to 07 Sept 2013 

SEISMOMETER TYPE AND ADC:
Teledyne Brown model KS-54000 borehole 3 component system for broadband,
and long period channels recorded at 20 sps and 1 sps, respectively. 
Guralp systems model CMG-3T 3 component seismometer for short period, 
and long period channels recorded at 40 sps and 1sps,respectively.
Episensor strong motion sensor recorded at 1 sps and 100 sps.
Quanterra Q330HR data acquisition system.

CALIBRATION EPOCHS:     2009, 142 - 2013, 250 

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