Laboratory Tests of Three Z-Land Fairfield Nodal 5-Hz, Three-Component Sensors

Ringler A. T.; Anthony R. E.; Karplus M. S.; Holland A. A.; Wilson D. C.

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Laboratory Tests of Three Z-Land Fairfield Nodal 5-Hz, Three-Component Sensors

机译：三个Z-Land Fairfield Nodal 5-Hz，三分传感器的实验室测试

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We conduct a number of laboratory tests at the Albuquerque Seismological Laboratory to verify the self-noise and fidelity in which 3 three-component Fairfield Nodal Z-Land, Generation 2, 5-Hz sensors are able to record seismic signals. In addition to the incoherent self-noise of the sensors, we estimate the sensitivity of the units in digital volts/m/s, the damping, and the free period. These three parameters allow us to completely characterize the response of the instruments. We find that the responses of all components match a mean-derived response to within 5% of amplitude and 0.03 radians in phase. This close agreement suggests that for most applications a nominal response is suitable. We also checked the timing of the units as compared to a Quanterra Q330HR and found good agreement up to 200 samples/s. Finally, we compared the results of our noise tests on these sensors to a couple of nodal sensors recently deployed at the Community Wavefield Demonstration Experiment in north-central Oklahoma and found that local site noise and not the sensor self-noise is a fundamental limiter in the resolution of these deployed sensors at frequencies above similar to 0.1 Hz.

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《Seismological research letters》 |2018年第5期|共8页
作者
Ringler A. T.; Anthony R. E.; Karplus M. S.; Holland A. A.; Wilson D. C.;
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作者单位

US Geol Survey Albuquerque Seismol Lab POB 82010 Albuquerque NM 87198 USA;

US Geol Survey Albuquerque Seismol Lab POB 82010 Albuquerque NM 87198 USA;

Univ Texas El Paso 500 West Univ Ave El Paso TX 79968 USA;

US Geol Survey Albuquerque Seismol Lab POB 82010 Albuquerque NM 87198 USA;

US Geol Survey Albuquerque Seismol Lab POB 82010 Albuquerque NM 87198 USA;

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正文语种 eng
中图分类地震学;
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Laboratory Tests of Three Z-Land Fairfield Nodal 5-Hz, Three-Component Sensors

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