Most previous studies have indicated that the ground subsidence has stabilized under the famous City of Venice, Italy. However a recent study published in March indicates this may not be the case. The researchers used GPS and InSAR data from 2000 to 2010 and found the rate of subsidence on the order of 1 – 4 mm per year. [Source: CBS News via Geology.com. Image: Wikipedia/Saffron Blaze]
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Digital Mapping Duopoly
By way of Geology.com, the Wall Street Journal reports on some interesting news related to GPS and even our beloved Google Maps / Google Earth. Apparently there are only two games in town when it comes to data providers for online and digital mapping products that are used by the aformentioned software as well as your GPS navigation system: Netherlands-based Tele Atlas NV, and Chicago-based Navteq Corp. (Photo by Websteria)
In October, Nokia bought Navteq for …wait for it… $8.1 billion. They plan to use the technology as the basis for a business model involving selling advertising tied to your phone’s location. A month later TomTom, a maker of GPS products, beat out rival Garmin and bought Tele Atlas for $4.2 billion. Were either of these companies really worth that much money? It doesn’t appear like it. Thus concern has been raised that the new owners of the technology might be in a position to hurt competitors by raising prices. We will have to see how things pan out.