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San Francisco's Millennium Tower is siiiinnnnking

Accepted submission by Max Hyre http://{maxhyre} {at} {yahoo.com} at 2016-11-26 03:26:19
News
From the what-goes-up-must-come-down dept.

The Sentinel-1 satellites have shown that the Millennium Tower skyscraper in the centre of San Francisco is sinking by a few centimetres a year. [...] Completed in 2009, the 58-storey Millennium Tower has recently been showing signs of sinking and tilting. Although the cause has not been pinpointed, it is believed that the movements are connected to the supporting piles not firmly resting on bedrock. [Ya think?]

The ESA's web report [esa.int] discusses subsidence and (more rarely?) elevation of the earth's surface. It works especially well in cities, “down to millimetres. The technique works well with buildings because they better reflect the radar beam” They're studying the phenomenon worldwide.


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