Author(s):
Dawna L. Cerney - Texas State University - San Marcos
J. Ronald Eyton PhD - Texas State University - San Marcos
David R. Butler PhD - Texas State University - San Marcos
Abstract:
This research utilized digital image processing techniques, normally associated with satellite image analysis, to examine the changes observed in repeat photographs of the same landscape through time. Multitemporal color composites, principal components, and image classification were used to process registered anniversary date images of Lincoln Creek, Glacier National Park, Montana. One set of images (1990, 1991 and 1994) was used to examine deltaic deposition at the confluence of Lincoln Creek with the Middle Fork of the Flathead River. A second set was used to calculate the rate of change of channel position over time (1998, 2000, 2001 and 2002). A third set of three images was taken prior to, a few months after, and a year after a forest fire above the south bank of Lincoln Creek. Area of primary forest mortality directly attributable to burning as well as the area of secondary mortality associated with fire-induced stress was calculated from this set of images.
