San Francisco earthquake risk forecast

San Francisco earthquake risk forecast

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

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