Note: Rotaphone, a new self-calibrated six-degree-of-freedom seismic sensor

被引：17
|
作者：
Brokesova, Johana [1 ]
Malek, Jiri [2 ]
Evans, John R. [3 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague, Czech Republic
[2] ASCR, Inst Rock Struct & Mech, Prague 18209, Czech Republic
[3] US Geol Survey, Menlo Pk, CA 94025 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 08期
关键词：
D O I：
10.1063/1.4747713
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4747713]
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页数：3
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