LiDAR Used to Update San Andreas Fault Rupture Point

Using a LiDAR – derived bare earth model plus old photographs and some solid detective work scientists have been able to solve the mystery of the rupture point of the San Andreas fault that caused the 1906 earthquake in San Francisco.

As reported in Earth “The initial trace reported in 1906 was fairly accurate, but the story kept changing over the years until 100 years later, the maps and reports were no longer true to what actually happened,” says Sayre, co-author of the new study in the Bulletin of the Seismological Society of America.

To update the location of the fault trace in Portola Valley, Wrucke’s son Robert, an independent computer engineer also based in Portola Valley, used bare-earth lidar technology, which can see through vegetation, to map the area. Then the team overlaid the lidar-generated maps onto the old photos to help pinpoint where the erroneous reports went wrong.

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1 Response to LiDAR Used to Update San Andreas Fault Rupture Point

  1. Chad Souter says:

    Cool use of LiDAR technology. We are seeing the technology used for these types of projects more and more.

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