San Francisco earthquake risk forecast. Satellite image of California, USA, showing earthquake faults (red lines) and synthetic aperture radar pattern

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San Francisco earthquake risk forecast. Satellite image of California, USA, showing earthquake faults (red lines) and synthetic aperture radar patterns of seismic deformations resulting from a model earthquake on the San Andreas fault (yellow line). The changes in colour represent the displacement of the ground due to the earthquake. The model has estimated that there is a 25 per cent chance of an earthquake measuring magnitude 7 or above in the next 20 years along the San Andreas fault. SAR images are created by transmitting successive pulses of radio waves to \illuminate\" a target scene, and the echo of each pulse is received and recorded."

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Size: 2577px × 2452px
Photo credit: © JPL/UCDAVIS/NASA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, american, analysing, andreas, aperture, california, city, coastal, coastline, computer, deformation, deformations, displacement, earth, earthquake, fault, faults, forecast, francisco, geographical, geography, image, map, model, modelling, north, observation, pattern, patterns, predicting, prediction, radar, risk, san, satellite, seismology, simulation, states, synthetic, systems, united, usa, virtual