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Crossover differences as an indication of survey accuracy

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Abstract

Differences in values obtained at trackline crossovers can be used to give an indication of the overall accuracy of marine geophysical surveys. A study of the statistical validity and interpretative value of several parameters commonly used to summarize crossover discrepancies has been made. It was found that the interpretation of commonly reported statistical parameters such as standard deviation and R.M.S. error can be complicated by the presence of a systematic error in the survey data, by possible non-normalities in the error distribution, or by the use of a distribution of positive differences. A standard procedure for the analysis of survey error on the basis of crossover discrepancies is outlined, including techniques for estimating systematic survey errors and for the evaluation of the normality of the observed distribution of crossover discrepancies.

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Authors and Affiliations

  1. Geologial Survey of Canada, 100 W. Pender St., V6B 1R8, Vancouver, B.C., V6B 1R8

    D. Swan

  2. Institute of Oceanography, University of British Columbia, Vancouver, B.C., Canada

    I. F. Young

  3. Department of Geological Sciences, University of British Columbia, Vancouver, B.C., Canada

    I. F. Young

Authors
  1. D. Swan
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  2. I. F. Young
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Swan, D., Young, I.F. Crossover differences as an indication of survey accuracy. Marine Geophysical Researches 3, 393–400 (1978). https://doi.org/10.1007/BF00347675

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