HK Bridge

Thermal expansion of a bridge in Hong Kong


The colorscale on the left represents the thermal expansion coefficient estimated by Sarproz from InSAR time series (two examples are displayed on the right). The bridge in the picture is expanding horizontally, and this explains why the west side is approaching the satellite viewing direction while the east side is moving away. Data were acquired by TerraSAR-X along an ascending orbit, and the satellite is right-looking.