LONG-DISTANCE AIRBORNE GLACIAL SOUNDING.

• Main Author: Walker,John W.
• Other Authors: ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
• Format: Text
• Language: English
• Published: 1967
• Subjects: Cartography and Aerial Photography; Snow; Ice and Permafrost; (*SURVEYING(GEOGRAPHIC); GLACIERS); (*GLACIERS; MEASURING INSTRUMENTS); (*DEPTH FINDING; AIRBORNE); ELECTROMAGNETIC WAVE REFLECTIONS; REFLECTORS; RADAR EQUIPMENT; MAPPING; ANTARCTIC REGIONS; GREENLAND; ADSORPTION; SURVEYING(GEOGRAPHIC); RADAR SIGNALS; DEPTH FINDING; RADIO ALTIMETERS; GEOPHYSICS; TERRAIN AVOIDANCE; Antarctic; Greenland; Antarc*; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/AD0664152; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0664152

Experiments during the summer of 1966 established the feasibility of using airborne 30 MHz vertical incidence radar for sounding the thickness of polar ice sheets over long-range traverses. Four flights across Greenland each averaging 8 hours of flight time and approximately 2400 km. in length were continuously sounded. An automated data acquisition system, employed for the first time, was primarily responsible for the increased long-range capability. The principal limitations have been attributed to problems associated with navigating the polar regions. (Author)