A coastline has been superimposed in white. Details of the mosaic are discussed in the text. Enlargement of Fig. 2, showing a large flow feature in northeast Greenland. Scale bar 100 km. Surface ice flow field of Jakobshavns Isbrae derived by computer determined displacements of features in two images acquired 105 days apart.
Vectors indicate flow direction and speed.
The main channel is the sinuous dark area, bounded by brighter crevassed regions, which flows from the upper right to the middle left. North is toward the top of the image. The scene size is 16 km by 12 km. R. Kwok of the Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109. K. Jezek of the Byrd Polar Research Center, Ohio State University, Columbus, OH 43210.