The map below illustrates how far the surface moved during the quake, ... Surface displacement data shows pixel offset tracking in “line-of-sight” from Sentinel-1 satellite on Jan. 29 and Feb. 10.

Changes in the sea surface height therefore point to what lies deep beneath the surface. ... The data helped the team further refine maps of tectonic boundaries and ocean currents near coastal areas.

In the early 1990s, NASA’s Magellan satellite mapped the planet’s surface and its volcanic features using radar, but much of the data was difficult to handle at scale due to a lack of ...