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Fig. 22. | Earth, Planets and Space

Fig. 22.

From: Coseismic and early postseismic slips associated with the 2011 off the Pacific coast of Tohoku Earthquake sequence: EOF analysis of GPS kinematic time series

Fig. 22.

Displacements due to thermal expansion of GPS pillars; (left) Comparison of the position time series corresponding to the sum of modes 2 and 3, which are considered to represent the thermal expansion of a pillar, with the original time series at a typical GPS station. The black line denotes the original position time series, and the gray line denotes the deformations represented by the sum of modes 2 and 3. Note that both time series are smoothed with a 900-s moving window and are plotted w.r.t. the local time (Japan Standard Time). (right) The map view of displacements represented by the sum of modes 2 and 3. Black vectors denote displacements on a sunny day (March 8), and gray vectors denote those on a cloudy day (March 7). Numbers associated with the red vectors represent the local time at which the displacements were observed on March 8.

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