Accession Number : ADA190639

Title :   A Technique for Processing Noisy AXBT (Airborne Expendable Bathythermograph) Data.

Descriptive Note : Final rept.,

Corporate Author : NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS

Personal Author(s) : Teague, W J

PDF Url : ADA190639

Report Date : Jun 1986

Pagination or Media Count : 17

Abstract : Extensive airborne expendable bathythermograph (AXBT) surveys are routinely conducted by the U.S. Navy. These surveys are often used to describe mesoscale variability, western boundary currents, or eddies. Quasisynoptic coverage of an oceanic region is possible with a single P-3 aircraft dropping AXBT's over a period of three to five full flight days. Temperature structure is attainable down to 400 m by using shallow probes and down to 800 m by using deep probes. Regional AXBT surveys often expend hundreds of AXBTs, and some of the profiles commonly contain considerable noise. Noise can originate from equipment malfunctions, electrical problems, radio interference, rough sea state, or weak radio signals (due to transmission range). Noisy profiles are often discarded or truncated because editing seems impossible or very costly. Much data, which were taken at considerable expense, are not processed. A procedure for processing such AXBT data is described. The technique is simple to apply. Very little user input control is required. Data editing is automatic and produces consistent editing, which is well defined. The technique is flexible and can be adapted to most AXBT data (whether or not the data are noisy).

Descriptors :   *DATA PROCESSING, *EDITING, *BATHYTHERMOGRAPH DATA, AIRBORNE, BATHYTHERMOGRAPHS, BOUNDARIES, CONSISTENCY, OCEAN CURRENTS, EXPENDABLE, MALFUNCTIONS, OCEANS, PROBES, SEA STATES, TEMPERATURE, TRANSMITTANCE, NOISE, DIGITAL SYSTEMS, PROFILES, PLOTTING, COMPUTER APPLICATIONS

Subject Categories : Physical and Dynamic Oceanography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE