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Probable errors in width distributions of sea ice leads measured along a transectThe degree of error expected in the measurement of widths of sea ice leads along a single transect are examined in a probabilistic sense under assumed orientation and width distributions, where both isotropic and anisotropic lead orientations are examined. Methods are developed for estimating the distribution of 'actual' widths (measured perpendicular to the local lead orientation) knowing the 'apparent' width distribution (measured along the transect), and vice versa. The distribution of errors, defined as the difference between the actual and apparent lead width, can be estimated from the two width distributions, and all moments of this distribution can be determined. The problem is illustrated with Landsat imagery and the procedure is applied to a submarine sonar transect. Results are determined for a range of geometries, and indicate the importance of orientation information if data sampled along a transect are to be used for the description of lead geometries. While the application here is to sea ice leads, the methodology can be applied to measurements of any linear feature.
Document ID
Document Type
Reprint (Version printed in journal)
Key, J.
(Cooperative Institute for Research in Environmental Sciences Boulder, CO, United States)
Peckham, S.
(Cooperative Institute for Research in Environmental Sciences; Colorado, University Boulder, United States)
Date Acquired
August 14, 2013
Publication Date
October 15, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Accession Number
Funding Number(s)
CONTRACT_GRANT: N00014-90-J-1840
CONTRACT_GRANT: N00014-86-K-0695
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