HR: 1340h
AN: C43C-0235    [Abstracts]
TI: Use of Surface Oblique Photography to Estimate Melt Puddle Progression on Melting Fast Ice, Baffin Island NWT.
AU: * Weaver, R L
EM: weaverr@nsidc.org
AF: National Snow and Ice Data Center, CIRES, University of Colorado, Boulder, CO 80309 United States
AB: In 1973 and 1974 surface oblique photographs were acquired to document the progression of surface melt pond development on melting fast ice. The original analysis technique applied to these photographs consisted of a manual estimation of proportional area covered by melt ponds in each photograph, based on the geometry of oblique photography. Today, some 30 years later, the development of digital analysis tools can allow more detailed analysis of these photographs. New tools including scanning of the original photographs, image enhancement and classification tools, and photomodelling software were applied to these photos. This paper assesses the ability of these computer-based tools to extract additional data, and to speed the analysis process for similar studies.
DE: 9315 Arctic region
DE: 1827 Glaciology (1863)
DE: 1863 Snow and ice (1827)
SC: Cryosphere [C]
MN: 2004 AGU Fall Meeting