Bevis' team hopes to add 50 more GPS stations to its current 25 to better measure the movement and deformation of the crust that will continue for years.
When the content of water and temperature in the layers changes, the layers expand and contract and the measure mark of deformation is also moved.
当地层中水和温度的量值变化时，地层便膨胀或收缩，依附于地层的形变测量标志也就随之而被移动。
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Due to the great depth, good continuity and high reliability of monitoring, bore inclinometer becomes a main monitoring measure for the deformation of foundation pit walls.