4 ms·
Turkey earthquake fault lines mapped from space
- ryzvonusef 4y ago> In the era before satellites, geologists would map earthquake faults by walking the lines of rupture. It was a laborious process that naturally also missed a lot of detail. Radar interferometry from space was developed in the 1990s, and in recent years it has become a particularly compelling tool. > In part that is down to the quality of the sensors now in orbit, but it is also the result of more powerful computers and smarter algorithms. > It is possible today to get a data product on to the computers of experts, ready for analysis, within hours of a satellite making an overhead pass. Comet, unfortunately, had to wait several days for Sentinel-1A to be in the right part of the sky to get an optimal view of Turkey. But this will improve as more and more radar satellites are launched. > "By the end of the decade, we should be able to do this kind of analysis within a day of most damaging earthquakes, and then we would be more useful for the relief effort. As things stand, we are of course outside the 72-hour window for search and rescue," Prof Wright said.
- stop50 4y agoI saw images with 1-2m shift but i didn't expect that much of an 3 m shift.