"This image captured by Sentinel-1A’s radar on 1 April 2015 shows a central region of California in the US.
The San Andreas Fault – the border between two tectonic plates – is visible as a somewhat straight line running from the upper-left corner of the image to the bottom centre. The Pacific Plate to the west is moving in a northwest direction, while the North American plate to the east is shifting southeast. This horizontal scraping is happening at up to about 5 cm a year in some parts of the fault..."
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