Tracing of internal layers in radar echograms from a Greenland study region

• Main Author: Gao, Xin
• Other Authors: Legarsky, Justin J.
• Format: Thesis
• Language: English
• Published: University of Missouri--Columbia 2006
• Subjects: Radar cross sections; Sea ice > Remote sensing; Radar in glaciology; Ice sheets; Greenland; glacier; GRIP; Ice Sheet; Jakobshavn; Sea ice
• Online Access: http://hdl.handle.net/10355/4645

The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research .pdf file viewed on (June 25, 2007) Includes bibliographical references. Thesis (M.S.) University of Missouri-Columbia 2006. Dissertations, Academic -- University of Missouri--Columbia -- Electrical engineering. Signs of long-term glaciological processes and past ice sheet structure are preserved in the internal layer signatures of the Greenland ice sheet. Internal layer data have been collected over a considerable portion of the Greenland ice sheet using ice-sounding radar. We traced these layers along thousands of kilometers of flight lines from the ice divide toward Jakobshavn, which is the most active glacier in Greenland. We determined the traced-radar layers age at the GRIP site using the GRIP core age-depth relationship. Since the depth varies spatially for a layer of a specific dated age, an age-depth relationship for each position along the flight lines of this study can be found using the traced layers. We analyzed 31 points where flight lines crossover one another. From the flight line crossover analysis, we found a 9 m maximum difference, which is less than a 1% difference.