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Research on Reference Datum of the Vertical Motion of the Crust

Author: RongMin
Tutor: SunFuPing；JiaXiaoLin
School: PLA Information Engineering University
Course: Geodesy and Survey Engineering
Keywords: Crustal vertical movement benchmark VLBI GPS SLR Model of post-glacial crustal rebound Systematic differences Base station
CLC: P228.4
Type: Master's thesis
Year: 2008
Downloads: 54
Quote: 1
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Abstract

Crustal movement is part of the activities of the entire planet, and it occurs at the surface of the Earth, are directly linked with the survival and development of mankind. With the development of space geodetic techniques, vertical crustal movement will be more in-depth. But the absence of unified global vertical crustal movement reference, various countries and regions of the world have vertical movement of the data is difficult to unify. Carry out the modern vertical crustal movement reference study, discuss and put forward a clear sense of geophysical, easy to implement, and facilitate the application of modern vertical crustal movement reference, not only is the urgent need of the development of geodetic disciplines, promoting seismic, geological and geophysical and other related disciplines are also of great significance. The main work of this paper are as follows: 1. System expounded on vertical crustal movement and international Terrestrial Reference Frame (ITRF) and its latest version of the the ITRF2005 framework of the definition of, implementation, and establish a method. Calculated based on ITRF2005 plate motion model to analyze the movement of tectonic plates. Solved in juxtaposition station the geocentric coordinate discrepancies value measurement techniques of the GPS and VLBI two space, this does not match the value reflects the geocentric coordinate realize accuracy. The actual accuracy of the the ITRF2005 framework under GPS, VLBI and SLR geocentric coordinate speed detection. Measured these three different space technology crustal movement detection using VLBI, GPS and SLR and home station geocentric coordinate speed solver baseline length rate of change, some found that they exist in the determination of crustal movement system is poor. This article focuses proposed three ways to establish global crustal vertical movement of the reference method for solving the difference between the velocity field vertical crustal movement reference system, analysis and produce different size direction system. First, to demonstrate the reasonableness of these types of methods; Then, by solving the system differential to achieve the unity of the the various velocity field with global reference vertical crustal movement; Finally, these three different mechanisms established global crustal vertical movement reference were analyzed and compared, thus proving SLR vertical velocity as a global reference of vertical crustal movement has a clear physical meaning, easy to implement, easy application characteristics. 5 describes the vertical movement of the crust. Analysis of the causes of the differences between the estimated value of the reference station rate chart reference station GPS time series processing value. Subsequently, the use of the earth's crust observation network of continuous operation a reference base station with global crustal vertical movement between the reference system of vertical crustal movement reference unified global crustal vertical movement to establish this reference.

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