By Big Sur Landslides
May 27, 2017
USGS is collecting and analyzing air photos to help monitor a huge landslide that occurred May 20 on California’s Big Sur coast.
USGS is collecting and analyzing air photos to help monitor a huge landslide that occurred May 20 on California’s Big Sur coast. A quarter-mile-wide lobe of rock and soil has buried State Highway 1 and extends into the Pacific Oceanat Mud Creek, about 140 miles south of San Francisco. The USGS Pacific Coastal and Marine Science Center’s Remote Sensing Coastal Change project captured several photo sets during the recent slide activity and plans to shoot additional photos from airplane and drones during the coming weeks and months. Project scientists photograph the California coastline regularly and use “structure-from-motion” software to transform photos into 3D maps from which they can measure ground movement. They have flown and photographed the Big Sur coast several times this spring to track landslide activity in collaboration with geologists from the USGS Landslide Hazards Program. For additional information and images, please visit the Remote Sensing Coastal Change website.
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On California’s Big Sur coast, the steep slopes at Mud Creek suffered a catastrophic collapse (May 20, 2017). On January 28, 2021, heavy rains from a two-day storm caused debris from fire-scarred slopes to wash out another section of road at Rat Creek. USGS scientists are monitoring this 100-mile section of the California coastline, in collaboration with the CA Department of Transportation.
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Remote Sensing Coastal Change
We use remote-sensing technologies—such as aerial photography, satellite imagery, structure-from-motion (SfM) photogrammetry, and lidar (laser-based surveying)—to measure coastal change along U.S. shorelines.Big Sur Landslides
On California’s Big Sur coast, the steep slopes at Mud Creek suffered a catastrophic collapse (May 20, 2017). On January 28, 2021, heavy rains from a two-day storm caused debris from fire-scarred slopes to wash out another section of road at Rat Creek. USGS scientists are monitoring this 100-mile section of the California coastline, in collaboration with the CA Department of Transportation. - News
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