Back
A High- and Low-Noise Model for High-Quality Strong-Motion Accelerometer Stations
Journal article

A High- and Low-Noise Model for High-Quality Strong-Motion Accelerometer Stations

  • Cauzzi, Carlo Swiss Seismological Service (SED-ETHZ), Sonneggstrasse 5, 8051 Zürich, Switzerland
  • Clinton, John Swiss Seismological Service (SED-ETHZ), Sonneggstrasse 5, 8051 Zürich, Switzerland
  • 2020-1-19
Published in:
  • Earthquake Spectra. - SAGE Publications. - 2013, vol. 29, no. 1, p. 85-102
Geotechnical Engineering and Engineering Geology
Geophysics
English We present reference noise models for high-quality strong-motion accelerometer installations. We use continuous accelerometer data to derive very broadband (50 Hz–100 s) high- and low-noise models. The proposed noise models are compared (1) to the broadband seismometer Peterson (1993) noise models; (2) the datalogger self-noise and background noise levels at existing Swiss and Southern California strong-motion stations; and (3) typical earthquake signals recorded in Switzerland and worldwide. The accelerometer low-noise model (ALNM) is dominated by instrument noise from the sensor and datalogger. The accelerometer high-noise model (AHNM) reflects (1) at high frequencies the acceptable site noise in urban areas, (2) at mid-periods the microseismal peaks and (3) at long periods the maximum noise observed from well-insulated sensor/datalogger systems placed in vault quality sites. This study also provides confirmation of the remarkable capability of modern strong-motion accelerometers to record low-amplitude ground motions with seismic observation quality over a broad frequency range.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/272304
Statistics
Document views: 25 File downloads: