Land subsidence in Venice, interferogram

Land subsidence in Venice, interferogram

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Credit: ESA/ATG medialab/SCIENCE PHOTO LIBRARY

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Caption: Land subsidence in Venice. Synthetic aperture radar interferometry (InSAR) image showing the movement of land under Venice, Italy (coloured). InSAR is a technique where two or more satellite radar images acquired over the same area are combined to map surface topography and detect surface change. Venice has been subject to floodings for hundreds of years and the problem is increasing due to sea level rise and a constant subsidence (sinking) of the city. Image produced by combining two Sentinel-1 satellite images acquired in 2014.

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Keywords: 2014, 21st century, changes, city, color, color-coded, colors, colour, colour-coded, colours, earth observation, europe, european, from space, geographical, geological, geology, ground, insar, interference pattern, interferogram, italian, italy, movement, moving, no-one, nobody, patterns, physical geography, radar, satellite image, sentinel 1, sentinel-1, sinking, subsidence, subsiding, surface change, synthetic aperture radar interferometry, topographical, topography, urban, venetian, venice

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