Mapping tide-water glacier dynamics in east Greenland using landsat data

摘要: Landsat multispectral scanner and thematic mapper images were co-registered for the Kangerdlugssuaq Fjord region in East Greenland used to map glacier drainage-basin areas, changes positions of tide-water termini estimate surface velocities larger glaciers. Statistics compiled document distance area termini. The methodologies developed this study are broadly applicable investigation glaciers other areas. number available consecutive years accuracy with which key factors that influence degree regional dynamics can be characterized using remotely sensed data. Three domains state interpreted : net increase terminus southern part area, loss upper a slight northward from Ryberg Fjord. Local increases concentrations drifting icebergs fjords coincide observed extension positions. Ice-surface velocity estimates derived several automated image cross-correlation techniques. determined Gletscher is approximately 5.0 km −1 Kong Christian IV 0.9 . continuous presence brash ice front these indicates sustained rates ice-front calving.