Topographic change, Hatteras Village, NC, after Hurricane Irene, 2011

This difference image between the pre- and post-storm elevation data sets shows where significant changes have occurred.

Detailed Description

Topographic change (difference) for a portion of Hatteras Village, NC, after Hurricane Irene in 2011. In the difference image, landward of the eroded beach, there is a line of high erosion of the ocean-side of the dunes, presumably caused by waves during Irene. There is also some indication of overwash, with a more landward line of erosion followed by a line of deposition. Red colors indicate erosion. For example, oranges and reds on the seaward side of the islands indicate wide-spread shoreline retreat. Blue colors show areas of accretion, such as overwash deposits where waves and surge have moved sand landward. (The Atlantic Ocean is on the bottom right.)


Image Dimensions: 841 x 689

Date Taken:

Location Taken: US