Geologist explains photo analysis of Calif. coastal cliffs

man pointing to image on computer screen in an office setting

Detailed Description

USGS research geologist Jon Warrick explains how his team applied structure-from-motion analysis to photos from the California Coastal Records Project to measure coastal change. Jon Warrick explains a “difference map” constructed from structure-in-motion data. Red areas indicate loss of material (erosion); blue areas show addition of material (deposition).


Image Dimensions: 1500 x 1033

Date Taken:

Location Taken: Santa Cruz, CA, US