partly supported by National 973 Project China(2013CB733305);NSFC(41174011,41210006,41504019);supported by a fund from Korea Astronomy and Space Science Institute(2016 Space Geodesy Project about Atmospheric/Ocean Tidal Effects)
Previous studies suggest that tidal friction gives rise to the secular deceleration of the Earth rotation by a quantity of about 2.25 ms/cy. Here we just consider additional contributions to the secular Earth rotation...
supported by National 973 Project China (2013CB733302, 2013CB733305);National Natural Science Foundation of China (41174011, 41429401, 41210006, 41128003, 41021061)
The total capacity of Three Gorges Reservoir(TGR) and Danjiangkou Reservoir(DJR) is large and has significant seasonal fluctuations, which give rise to crustal instability. In this research, we focus on studying t...
supported by National 973 Project China (2013CB733305);National Natural Science Foundation of China (NSFCs) (41174011,41429401,41210006,41128003,41021061)
Scientists pay great attention to different-time-scale signals in the lengllh of day (LOD) variations △LOD, which provide signatures of the Earth's interior structure, couplings among different layers, and potenti...
supported by the National 973 Program of China(2013CB733305);the National Natural Science Foundation of China(41174011,41429401,41210006,41128003,41021061,41574007)
The search for the elusive Slichter triplet requires elaborate analysis of the elastic-gravi- tational mode characters and the non-stationary behavior of noisy time-series. A typical question is that it is difficult t...
supported by National 973 Project China(2013CB733301,2013CB733305);NSFC(41174011,41429401,41210006,41128003,41021061)
According to the general theory of relativity, two clocks placed at two different positions with different geopotentials run at different rates. Thus one can determine the geopotential difference between these two poi...
supported by National 973 Project China(2013CB733305,2013CB733301);National Natural Science Foundation of China(41174011,41429401,41210006,41128003,41021061)
According to the space-geodetic data recorded at globally distributed stations over solid land spanning a period of more than 20-years under the International Terrestrial Reference Frame 2008,our previous estimate of ...
supported by National 973 Project China (2013CB733302,2013CB733305);NSFCs (41174011, 41429401, 41210006, 41128003, 41021061)
In this study, we propose a simple linear least squares estimation method(LLS) based on a Fourier transform to estimate the complex frequency of a harmonic signal. We first use a synthetically-generated noisy time ser...
supported by National 973 Project China(2013CB733305);NSFC(41174011,41128003,41210006,41021061,40974015)
The 2011 Tohoku-oki earthquake,occurred on 11 March,2011,is a great earthquake with a seismic magnitude Mw9. 1,before which an Mw7. 5 earthquake occurred. Focusing on this great earthquake event,we applied Hilbert-Hua...