Sierra Nevadas grow and Venice sinks, GLONASS-K testing, traffic updates, jamming, ships at sea and more
"Return of the Bucentaurn to the Molo on Ascension Day", by (Giovanni Antonio Canal) Canaletto
In this issue: GPS and InSar together tell more about Venice and the Sierra Nevada range, GLONASS-K testing delayed, Indian airports to install GAGAN, North Korea jams GNSS, Chinese fishing boats use Compass, SatNavs for elderly drivers
1. GROWTH SPURT
2. TESTING 1 . . . 2. . . . K
(Ria Novosti April 17, 2012) Russia to test second Glonass-K satellite in 2013
3. TRAFFIC UPDATES
4. JAM SESSION
5. ALL THE SHIPS AT SEA
6. Turn Left at the Pub
With test subjects in their 80s, the Intelligent Transport team at Newcastle University is investigating in-vehicle tools, including GPS, that can do the trick. They developed a satellite navigation device that uses local landmarks as turning cues: a local pub, a library, or a post office.
In a country that drives on the left, the GPS planned routes that avoided right-hand turns in order to help less confident drivers who were wary of oncoming traffic. The researchers are also experimenting with night visions systems and intelligent speed adaptations.
7. Che Catastrofe! Venice Still Sinking
Canaletto, the popular 18th century landscape painter and printmaker of Venetian scenes (see inset photo, above right), was so meticulous and accurate in his paintings that scientists could later determine the city had sunk more than two feet since 1727. But they thought the city was stabilized after a series of flood control and restoration projects.
However, Venice could be 3.2 inches lower by 2032, according to a 10-year study that used GPS and inSAR, a radar tool for measuring Earth’s deformation.
GPS took absolute readings of the city and its surrounding lagoons. inSAR detected the change elevation relative to other sites.
The new study also indicated that the lagoon area was tilting eastward, a millimeter or two each year, leaving Venice in the west somewhat higher. Prior satellite analyses didn’t pick up on the tilt, possibly because the scientists were using inSAR alone.
The scientific study was published on March 28 in the American Geophysical Union journal G-Cubed (Geochemistry, Geophysics, Geosystems).
Canaletto’s art survives in museums, private collections and college dorm walls all over the world.
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