Reply to: Namikas, S.L.; Edwards, B.L.; Bitton, M.C.A.; McKenna, W.; Booth, J.L.; Pennington, C.J., and Zhu, Y., 2007. Discussion of: Delgado, I. and Lloyd, G., 2004. A Simple Low Cost Method for One-Person Beach Profiling, Journal of Coastal Research, 20(4), 1246–1252; Journal of Coastal Research, 23(5), 1337–1340

Irene Delgado-Fernandez, Graham Lloyd

    Research output: Contribution to journalArticle

    Abstract

    The Delgado–Lloyd method offers a low-cost alternative for conducting beach profiles that requires only one surveyor. We have revisited the data provided in our original publication and conducted several statistical analyses to properly quantify the accuracy and precision of the Delgado–Lloyd method. Results show a mean precision of 0.014 m and an average accuracy of 0.024 m when compared to theodolite measurements. Individual readings across 2-m sectionsshow high accuracies, which supports the idea that a large part of the error is that any mistake might accumulate along the profile. We analyze the nature of this cumulative error in the context of the Delgado–Lloyd and the Emery methods and reply to some of the arguments of previous discussions. If the instrument used for the Delgado–Lloyd method is properly constructed, individual users with no experience may achieve high levels of accuracy when conductingprofiles.
    LanguageEnglish
    Pages1059-1063
    JournalJournal of Coastal Research
    Volume25
    Issue number4
    Publication statusPublished - 2009

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    title = "Reply to: Namikas, S.L.; Edwards, B.L.; Bitton, M.C.A.; McKenna, W.; Booth, J.L.; Pennington, C.J., and Zhu, Y., 2007. Discussion of: Delgado, I. and Lloyd, G., 2004. A Simple Low Cost Method for One-Person Beach Profiling, Journal of Coastal Research, 20(4), 1246–1252; Journal of Coastal Research, 23(5), 1337–1340",
    abstract = "The Delgado–Lloyd method offers a low-cost alternative for conducting beach profiles that requires only one surveyor. We have revisited the data provided in our original publication and conducted several statistical analyses to properly quantify the accuracy and precision of the Delgado–Lloyd method. Results show a mean precision of 0.014 m and an average accuracy of 0.024 m when compared to theodolite measurements. Individual readings across 2-m sectionsshow high accuracies, which supports the idea that a large part of the error is that any mistake might accumulate along the profile. We analyze the nature of this cumulative error in the context of the Delgado–Lloyd and the Emery methods and reply to some of the arguments of previous discussions. If the instrument used for the Delgado–Lloyd method is properly constructed, individual users with no experience may achieve high levels of accuracy when conductingprofiles.",
    author = "Irene Delgado-Fernandez and Graham Lloyd",
    year = "2009",
    language = "English",
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    AU - Delgado-Fernandez, Irene

    AU - Lloyd, Graham

    PY - 2009

    Y1 - 2009

    N2 - The Delgado–Lloyd method offers a low-cost alternative for conducting beach profiles that requires only one surveyor. We have revisited the data provided in our original publication and conducted several statistical analyses to properly quantify the accuracy and precision of the Delgado–Lloyd method. Results show a mean precision of 0.014 m and an average accuracy of 0.024 m when compared to theodolite measurements. Individual readings across 2-m sectionsshow high accuracies, which supports the idea that a large part of the error is that any mistake might accumulate along the profile. We analyze the nature of this cumulative error in the context of the Delgado–Lloyd and the Emery methods and reply to some of the arguments of previous discussions. If the instrument used for the Delgado–Lloyd method is properly constructed, individual users with no experience may achieve high levels of accuracy when conductingprofiles.

    AB - The Delgado–Lloyd method offers a low-cost alternative for conducting beach profiles that requires only one surveyor. We have revisited the data provided in our original publication and conducted several statistical analyses to properly quantify the accuracy and precision of the Delgado–Lloyd method. Results show a mean precision of 0.014 m and an average accuracy of 0.024 m when compared to theodolite measurements. Individual readings across 2-m sectionsshow high accuracies, which supports the idea that a large part of the error is that any mistake might accumulate along the profile. We analyze the nature of this cumulative error in the context of the Delgado–Lloyd and the Emery methods and reply to some of the arguments of previous discussions. If the instrument used for the Delgado–Lloyd method is properly constructed, individual users with no experience may achieve high levels of accuracy when conductingprofiles.

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