On the Influence of Diurnal and Subdiurnal Signals in the Normal Vector on Large Ring Laser Gyroscope Observations
On the Influence of Diurnal and Subdiurnal Signals in the Normal Vector on Large Ring Laser Gyroscope Observations
复制标题
法向矢量中的昼夜信号对大环激光陀螺仪观测的影响
DOI:
10.1007/s00024-020-02484-2
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发表时间:
--
影响因子:
2
通讯作者:
Schreiber
中科院分区:
文献类型:
--
作者:
Tercjak;Gebauer;Rajner;Brzeziński;Schreiber
The ring laser gyroscope (RLG) technique has been investigated for over 20 years as a potential complement to space geodetic techniques in measuring Earth rotation. However, RLGs are also sensitive to changes in their terrestrial orientation. Therefore in this paper, we review how the high-frequency band (i.e. signals shorter than 0.5 cycle per day) of the known phenomena causing site deformation contribute to the RLG observable, the Sagnac frequency. We study the impact of solid Earth tides, ocean tidal loading and non-tidal loading phenomena (atmospheric pressure loading and continental hydrosphere loading). Also, we evaluate the differences between available models of the phenomena and the importance of the Love numbers used in modeling the impact of solid Earth tides. Finally, we compare modeled variations in the instrument orientation with the ones observed with a tiltmeter. Our results prove that at the present accuracy of the RLG technique, solid Earth tides and ocean tidal loading effects have significant effect on RLG measurements, and continental hydrosphere loading can be actually neglected. Regarding the atmospheric loading model, its application might introduce some undesired signals. We also show that discrepancies arising from the use of different models can be neglected, and there is almost no impact arising from the use of different Love numbers. Finally, we discuss differences between data reduced with tiltmeter observations and these reduced with modeled signal, and potential causes of this discrepancies.
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影响因子:
2.8
作者:
W. Tian
通讯作者:
W. Tian
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
M. Schartner;J. Böhm;S. Böhm;K. Schreiber;A. Gebauer
通讯作者:
A. Gebauer
影响因子:
2
作者:
Monika Tercjak;A. Brzeziński
通讯作者:
A. Brzeziński
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
K. Schreiber;T. Klügel;G. Stedman
通讯作者:
G. Stedman
影响因子:
2.3
作者:
T. Nilsson;J. Böhm;H. Schuh;U. Schreiber;A. Gebauer;T. Klügel
通讯作者:
T. Nilsson;J. Böhm;H. Schuh;U. Schreiber;A. Gebauer;T. Klügel