1. Global Seismograph Network - GSN: IRIS -2 System
DATES OF OPERATION: 2 Aug 1998 to Present.
SEISMOMETER TYPE AND ADC:
Geotech KS54000 borehole seismometer for broad-band channels (00 location code).
ADC Quanterra Q-680, 6 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.
EVENT DETECTOR ALGORITHM:
The Murdock/Hutt event detector (Murdock, 1991) is used for the HN? and HH?
channels.