ACCESSING THE ACCURACY AND APPLICABILITY OF A MULTI-DECADAL BEACH SURVEY DATASET

机译：访问多十年海滩调查数据集的准确性和适用性

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Since 1976, five representative beach profile lines have been surveyed monthly along the 3.6 km long Collaroy-Narrabeen Beach using the Emery method. The present study incorporates two new survey programs concurrent to the conventional surveys: 1) monthly RTK-GPS surveys (since May 2005) of each profile line and the entire sub-aerial beach, and 2) high frequency image-derived (Argus) surveys (since July 2004). Using the high accuracy RTK-GPS as the control dataset, the overall error (in the vertical) of this multi-decadal dataset was found to be ±0.13 m, which translates to a beach width error of ±0.99 m. Argus data shows that the beach is very dynamic and the signal is an order of magnitude higher than the noise associated with this error. Three dimensional RTK-GPS surveys show that the five profile lines are well correlated with the observed beach trends.

机译：自1976年以来，每月使用埃默里（Emery）方法在3.6公里长的Collaroy-Narrabeen海滩上对五个代表性海滩轮廓线进行了调查。本研究纳入了两个与常规调查同时进行的新调查程序：1）每个轮廓线和整个空中海滩的每月RTK-GPS调查（自2005年5月起），以及2）高频图像衍生的（Argus）调查（自2004年7月起）。使用高精度RTK-GPS作为控制数据集，该多年代际数据集的整体误差（垂直方向）为±0.13 m，这意味着海滩宽度误差为±0.99 m。阿格斯（Argus）数据显示，海滩非常动态，信号比与该误差相关的噪声高一个数量级。三维RTK-GPS调查显示，五条轮廓线与观测到的海滩趋势高度相关。

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《International Conference on Coastal Engineering 2006(ICCE 2006); 20060903-08; San Diego,CA(US)》|2006年|P.4000-4008|共9页
会议地点 San DiegoCA(US)
作者
Mitchell D. Harley; Ian L. Turner; Andrew D. Short; Roshanka Ranasinghe;
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作者单位

Water Research Laboratory, School of Civil and Environmental Engineering, University of New South Wales, King Street, Manly Vale, NSW, 2093, Australia;

Coastal Studies Unit, School of Geosciences, University of Sydney, Sydney, NSW, 2006, Australia;

NSW D;

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正文语种 eng
中图分类海洋工程;
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ACCESSING THE ACCURACY AND APPLICABILITY OF A MULTI-DECADAL BEACH SURVEY DATASET

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