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From

Superimposed Decomposition of Wavelet Analysis for Seismological Investigations: Validation on GPS Stations Displacements in Central Alaska (2008-2012)

Abbas Abedini, Milad Moradi, Homayoon Zahmatkesh

Journal of Geosciences and Geomatics. 2017, 5(3), 147-166 doi:10.12691/jgg-5-3-6
  • Figure 1. Locations of GPS ground stations including AC15, AC20, ATW2, CLGO and SG27 at central Alaska, the United States of the America
  • Figure 2. Flowchart of proposed methodology for analyzing GPS stations displacements and recent earthquakes reports in central Alaska
  • Figure 3. Comparison of daily north-south, east-west and vertical direction of GPS stations displacements including AC15 (green), AC20 (black), ATW2 (red), CLGO (blue) and SG27 (magenta) and the USGS’s earthquakes report derived from seismometers across central Alaska for 2008, 2009, 2010, 2011 and 2012 year, respectively
  • Figure 4. Total displacements for 2008 (red), 2009 (green), 2010 (blue), 2011 (black) and 2012 (magenta) year in AC15, AC20, ATW2, CLGO and SG27 GPS stations at central Alaska, respectively
  • Figure 5. Mean Correlation of the GPS station displacements in horizontal and vertical direction for the stations AC15, AC20, ATW2, CLGO and SG27 in 2008, 2009, 2010, 2011 and 2012 year, respectively
  • Figure 6. Average annual horizontal velocity vectors of GPS stations including AC15, AC20, ATW2, CLGO and SG27 at central Alaska during 2008, 2009, 2010, 2011 and 2012 year in the Stable North American Reference Frame (SNARF version.1.0)
  • Figure 7. Average annual vertical velocity of GPS stations including AC15, AC20, ATW2, CLGO and SG27 at central Alaska during 2008, 2009, 2010, 2011 and 2012 year in the Stable North American Reference Frame (SNARF version.1.0)
  • Figure 8. Normalized and superimposed decomposition of mean correlations of the GPS station vertical displacements based on wavelet approach including AC15, AC20, ATW2, CLGO and SG27 GPS stations during 2008, 2009, 2010, 2011 and 2012 year, respectively
  • Figure 9. Normal distribution histogram of superimposed decomposition and coefficient levels 1 and 2 for vertical displacement of the GPS stations based on wavelet approach during 2008, 2009, 2010, 2011 and 2012 year, respectively