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Empirical Orthogonal Function Analysis of GRACE Gravity Data: A Method to Indentify Signals in Time Series of Gravity Changes

Empirical Orthogonal Function Analysis of GRACE Gravity Data: A Method to Indentify Signals in Time Series of Gravity Changes

Regular price $80.86
  • ISBN-13: 9783639278064
  • Publisher: VDM Verlag Dr. Müller
  • Release Date: Aug 26, 2010
  • Pages: 120 pages
  • Dimensions: 0.28 x 8.66 x 5.91 inches

Overview

The Gravity Recovery and Climate Experiment (GRACE) twin-satellite mission has been providing measurements of the time-varying gravity ?eld of the Earth for about seven years now. Gravity changes on Earth are due to mass changes and play an important role in Earth sciences. Monthly maps of mass changes are derived from the satellite measurements and need to be interpreted. The technique of empirical orthogonal function (EOF) analysis is investigated in this thesis, and it is demonstrated the performance of EOF analysis for separating signal from noise and errors, and for identifying different sources of gravity changes in a real GRACE data set. EOF analysis is explained from a theoretical point of view and is applied to the GRACE data. In the detailed data analysis, benefits and shortcomings of the EOF method are studied and described with respect to GRACE data.

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