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45 comments on Saudi Arabia's Ghawar Isn't Sinking (but has apparently moved)

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insardude_temp on May 8, 2008 - 1:33pm

I'm a SAR-specialist myself. The features they've detected are most probably some stable objects/terrain features (so-called "Persistent Scatterers" or PS in differential SAR interferometry) that reflect incident radiation well back towards the radar. A high-voltage tower can easily make an excellent PS that can be used to track terrain motion.

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Khebab on May 8, 2008 - 2:19pm

You are exactly correct however it is not clear if those "objects" are used as PS only or also used in order to draw conclusions about the evolution in drilling activity.

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insardude_temp on May 8, 2008 - 2:24pm

It's impossible to say without seeing the report - I'd like to know what the "activity density" is all about.

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