1. IRIS China Digital Seismograph Network - ICDSN [IC] 

DATES OF OPERATION:     09 Sep 1996 to Present.

SEISMOMETER TYPE:
Streckeisen STS-2 very broad band seismometer, Streckeisen STS-1 very broad 
band seismometer, Kinemeterics FBA-23 low-gain accelerometer.  The ADC is a
Quanterra model QX80.

DIGITAL FORMAT:  
16 bit gain-ranged data words for all components.  
Range: +1,048,576 to -1,048,448 counts.

EVENT DETECTOR ALGORITHM:
The Murdock event detector (Murdock, 1983) is used for all short period and 
mid period data.

Click on any of the following items for further information.

• Channel Data
• Amplitude Response to Ground Motion
• Seismic Noise Study graph information

• Seismic Noise Level - Annual
• Seismic Noise Level - Seasonal/Diurnal

COMMENTS:
A description of the China Digital Seismograph Network (CDSN) is available  
in a joint report by the State Seismological Bureau and the Albuquerque  
Seismological Laboratory (ASL) available through the ASL.