Note: Rotaphone, a new self-calibrated six-degree-of-freedom seismic sensor
Review of Scientific Instruments
By: Johana Brokešová, Jiří Málek, and John R. Evans
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Abstract
We have developed and tested (calibration, linearity, and cross-axis errors) a new six-degree-of-freedom mechanical seismic sensor for collocated measurements of three translational and three rotational ground motion velocity components. The device consists of standard geophones arranged in parallel pairs to detect spatial gradients. The instrument operates in a high-frequency range (above the natural frequency of the geophones, 4.5 Hz). Its theoretical sensitivity limit in this range is 10(-9) m/s in ground velocity and 10(-9) rad/s in rotation rate. Small size and weight, and easy installation and maintenance make the instrument useful for local-earthquake recording and seismic prospecting.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Note: Rotaphone, a new self-calibrated six-degree-of-freedom seismic sensor |
| Series title | Review of Scientific Instruments |
| DOI | 10.1063/1.4747713 |
| Volume | 83 |
| Issue | 8 |
| Year Published | 2012 |
| Language | English |
| Publisher | American Institute of Physics |
| Contributing office(s) | Earthquake Hazards Program |
| Description | 086108; 3 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Review of Scientific Instruments |
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