1. Global Seismograph Network - GSN: IRIS -2 System
DATES OF OPERATION: 28 Oct 1998 to Present.
SEISMOMETER TYPE AND ADC:
Guralp CMG3-T seismometer for broad-band channels (00 location codes). ADC Quanterra Q-680, 12 channel.
DIGITAL FORMAT: 24 bit integer data words for all broad-band (20 sps), long period (1 sps), very long period (0.1 sps), and ultra long period (0.01) channels. Range: +8,388,607 to -8,388,608 counts. 24-bit integer data words for very short period (80 sps) data continuous very short period (40 sps) data.
EVENT DETECTOR ALGORITHM: The Murdock/Hutt event detector (Murdock, 1991) is used for the HH? channels.