1. Global Seismograph Network - GSN:

DATES OF OPERATION:	28 Jun 2009 to Present.

SEISMOMETER TYPE AND ADC:
Teledyne Brown model KS-54000 borehole 3 component system for broadband,
long period, and very long period channels recorded at 20 sps, 1 sps and
0.1 sps respectively. Guralp systems model CMG-3T 3 component seismometer
for short period, long period, and very long period channels recorded at 40 sps,
1 sps and 0.1 sps respectively. Episensor strong motion sensor recorded at
1 sps and 100 sps. Quanterra Q330HR data acquisition system.

CALIBRATION EPOCHS:     2009, 179 - 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. 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