This site has moved to www.usgs.gov/landsat
Please visit the new site and update any bookmarks you have. 
 

Question:

Why are there light and dark lines across my Landsat image?

Answer:

Memory Effect (ME) is an artifact that can be observed as alternating lighter and darker scans. At various times, ME has been known as "banding" or "bright target recovery". ME is typically seen in imagery from bands 1-4, over large areas following a significant transition in radiant intensity such as at a cloud/desert or snow/water boundary.