| Autor: |
Kovachiev, S.A., Demidova, T.A., Son'kin, A.V. |
| Předmět: |
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| Zdroj: |
Journal of Atmospheric & Oceanic Technology; Aug97, Vol. 14 Issue 4, p883, 6p |
| Abstrakt: |
Experiments, made by the Laboratory of Seismology, Shirshov Institute of Oceanology, have shown that the near-bottom currents excite oscillation modes specific to the body of a pop-up seismic station. These motions can affect the seismic sensor, even if the sensor compartment lies several meters away on the bottom. The presence of oscillating frequencies also affects the shape of the signal recorded from earthquakes because these signals can also excite oscillations of the mechanical components of the station. With currents as strong as 6 cm s[sup-1] and greater, this noise signal can exceed the dynamic range of the recording system. Besides the current flow, any mechanical effect on the seismic station can cause noise. Different properties of noise and some recommendations to reduce the distortions are discussed in this paper. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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