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OUTLINES :• Measurement and Definition

• Instrument Models

• How can we installation the instrument in the site ?

• How does they work ?

• Where we can use them ?

AccelerometerSeismometer

Acceleration Velocity

Rate of change of velocity

Rate of change of position

cm/sec² = 1 Gal m/sec

Measurement and Definition

AccelerometerSeismometer

Titan Accelerometer

Full Scale Range of ± 0.25 g , ± 1 g , ± 2 g , ± 4 g

Very Broadband Seismometer STS-2

Corner of period 120 Sec

Broadband Seismometer Trillium 40

Corner of period 40 Sec

VeryBroadband Seismometer Trillium 120 P / PA

Corner of period 120 Sec

Very Broadband Seismometer Trillium Compact

Corner of period 120 Sec

Instrument Models

How can we installation the instrument in site ?

AccelerometerSeismometerHow does they

work ?

AccelerometerSeismometerUsed in :

• Determine location and magnitude of earthquake

• Seismic Tomography

• Velocity Attenuation

Used in :

• Structure Response

• Structure Health Monitoring

• Acceleration Attenuation

Where we can use them ?

Reference :• www.nanomtrics.ca

• Instrumentation in Earthquake Seismology, Jens Havskov, Institute of Solid Earth Physics University of Bergen Norway and Gerardo Alguacil Instituto Andaluz de Geofisica University of Granada Spain Preliminary version, June 2002