Instrument self-noise and sensor misalignment
In this study we investigate self-noise of RefTek<sup>TM</sup> 151-60A "Observer" broadband seismometers (flat to velocity between 50 Hz down to <i>T</i><sub>0</sub>=60 s, <i>f</i><sub>0</sub>≈17 mHz) using the coherency analysis...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2013-09-01
|
| Series: | Advances in Geosciences |
| Online Access: | http://www.adv-geosci.net/36/17/2013/adgeo-36-17-2013.pdf |
| id |
doaj-9c09dc4cf0264a348790046e6a2bb848 |
|---|---|
| record_format |
Article |
| spelling |
doaj-9c09dc4cf0264a348790046e6a2bb8482020-11-24T22:39:29ZengCopernicus PublicationsAdvances in Geosciences1680-73401680-73592013-09-0136172010.5194/adgeo-36-17-2013Instrument self-noise and sensor misalignmentA. Gerner0G. Bokelmann1Department of Meteorology and Geophysics, University of Vienna, AustriaDepartment of Meteorology and Geophysics, University of Vienna, AustriaIn this study we investigate self-noise of RefTek<sup>TM</sup> 151-60A "Observer" broadband seismometers (flat to velocity between 50 Hz down to <i>T</i><sub>0</sub>=60 s, <i>f</i><sub>0</sub>≈17 mHz) using the coherency analysis method introduced by Sleeman et al. (2006). <br><br> We present a self-noise model for this type of sensor and compare it to the self-noise models of the standard observatory sensor STS-2 (Streckeisen) and RefTek's 151-120 broadband seismometer, which both have natural periods <i>T</i><sub>0</sub> of 120 s. <br><br> We further report on the sensitivity of this technique to sensor misalignment and our success of eliminating leakage of the omnipresent microseism noise into self-noise estimates by numerically rotating seismic traces in order to find real self-noise.http://www.adv-geosci.net/36/17/2013/adgeo-36-17-2013.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
A. Gerner G. Bokelmann |
| spellingShingle |
A. Gerner G. Bokelmann Instrument self-noise and sensor misalignment Advances in Geosciences |
| author_facet |
A. Gerner G. Bokelmann |
| author_sort |
A. Gerner |
| title |
Instrument self-noise and sensor misalignment |
| title_short |
Instrument self-noise and sensor misalignment |
| title_full |
Instrument self-noise and sensor misalignment |
| title_fullStr |
Instrument self-noise and sensor misalignment |
| title_full_unstemmed |
Instrument self-noise and sensor misalignment |
| title_sort |
instrument self-noise and sensor misalignment |
| publisher |
Copernicus Publications |
| series |
Advances in Geosciences |
| issn |
1680-7340 1680-7359 |
| publishDate |
2013-09-01 |
| description |
In this study we investigate self-noise of
RefTek<sup>TM</sup> 151-60A "Observer" broadband
seismometers (flat to velocity between 50 Hz down to <i>T</i><sub>0</sub>=60 s,
<i>f</i><sub>0</sub>≈17 mHz) using the coherency analysis method introduced by
Sleeman et al. (2006).
<br><br>
We present a self-noise model for this type of sensor and compare it to the
self-noise models of the standard observatory sensor STS-2 (Streckeisen) and
RefTek's 151-120 broadband seismometer, which both have natural periods
<i>T</i><sub>0</sub> of 120 s.
<br><br>
We further report on the sensitivity of this technique
to sensor misalignment and our success of eliminating leakage of the
omnipresent microseism noise into self-noise estimates by numerically
rotating seismic traces in order to find real self-noise. |
| url |
http://www.adv-geosci.net/36/17/2013/adgeo-36-17-2013.pdf |
| work_keys_str_mv |
AT agerner instrumentselfnoiseandsensormisalignment AT gbokelmann instrumentselfnoiseandsensormisalignment |
| _version_ |
1725708685284474880 |