Satellite sees ground movement after quake
DEC 17, 2014
DOI: 10.1063/PT.5.028505
BBC : Europe’s Sentinel-1a satellite, which was launched earlier this year, has provided the first high-resolution images of ground movement after an earthquake. Back in August, California’s Napa Valley suffered an earthquake. Because Sentinel-1a flies over and takes a snapshot of the surrounding area every 12 days, researchers have been able to track the earthquake’s aftermath. The high-resolution images have captured the surface creeping forward at a rate of 5 cm per month. The data will allow researchers to see which parts of a fault line “stick” and potentially cause an earthquake and which parts flow over the surrounding rock.
© 2014 American Institute of Physics
