FIELD INVESTIGATION OF TWO RETROGRESSIVE BREACH FAILURES AT AMITY POINT
FIELD INVESTIGATION OF TWO RETROGRESSIVE BREACH FAILURES AT AMITY POINT
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对 Amity Point 两次倒退破坏失败的现场调查
DOI：
10.1142/9789811204487_0039
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Culp, J.
中科院分区：
文献类型：
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作者：
Brilli, N.;Stark, N.;Nielsen, P.;Callaghan, D.;Manning, M.;Culp, J.
昆士兰州Amity Point进行了一项为期27天的现场研究，以探索倒退性破坏失败(RBF)。在研究过程中记录了两个事件，并获得了一个正在进行的事件的视频和照片。测量了海滩剖面和恢复的海岸线位置，并部署了简单的渗透仪，以获得地表沙子密度的代用品。在第二次事件之前，沙子似乎处于疏松状态，这与RBF理论存在争议。随着滩面的潮汐侵蚀，恢复的海岸线在最初的24-48小时内迅速淤积。在每一次事件发生的当天，西北偏北方向的风速达到了∼35公里/小时，这是唯一次观察到这些条件。
A 27-day field study was conducted to explore Retrogressive Breach Failures (RBF) at Amity Point, Queensland. Two events were documented over the course of the study, and videos and photographs were obtained of one event in progress. Beach profiles and recovering shoreline position were measured along with deployments of a simple penetrometer to obtain a proxy for surficial sand density. The sand appeared to be in a loose state prior to the second event, being controversial to theory of RBF. The recovering shoreline showed rapid accretion in the first 24-48 hours along with tidal erosion of the beach face. Wind speeds reached ∼35 kilometers/hour out of the NNW on the day of each event, representing the only time these conditions were observed.