Kenai Peninsula Coastal Erosion Studies

Steve Baird, KBRRDr. Tom Ravens, UAAErin Eggleston, UAADr. Orson Smith, UAAGary Williams, KPB

Shoreline ChangeGoal: Use a series of complete sets of aerial photos from different years to assess shoreline change (especially bluff erosion).

•Rectify aerial photos

•Create lines showing bluff edges or shorelines

•Measure erosion rates

Study Area

•Homer: ~9 miles•KPB: ~86 miles

Study Area

•Homer: ~9 miles•KPB: ~86 miles

• Rectify photos

The Process:

• Draw shorelines

• Draw transects

Overall average annual erosion:1 ft / year(2.3 ft / year for Homer)

A) 2004 Aerial Image B) 1996 Aerial Image