High resolution LiDAR measurements reveal fine internal structure and variability of sediment-carrying coastal plume

Zavialov P. O.; Pelevin V. V.; Belyaev N. A.; Izhitskiy A. S.; Konovalov B. V.; Krementskiy V. V.; Goncharenko I. V.; Osadchiev A. A.; Soloviev D. M.; Garcia C. A. E.; Pereira E. S.; Sartorato L.; Moller O. O. Jr.

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High resolution LiDAR measurements reveal fine internal structure and variability of sediment-carrying coastal plume

机译：高分辨率LiDAR测量显示出精细的内部结构和携带沉积物的沿海羽流的可变性

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We report results of a field survey conducted in the buoyant, sediment-carrying coastal plume generated by the discharge from the Patos Lagoon, the World's largest choked lagoon. The concentration of total suspended matter (TSM) and organic matter (as represented by total organic carbon, TOC) were mapped using an ultraviolet fluorescent LiDAR, which allowed for extensive data coverage (total of 79,387 simultaneous determinations of TSM and TOC) during 3 consecutive days. These observations were accompanied by hydrographic measurements from the ship and at a mooring station. We first describe synoptic variability of the plume, which responded energetically to wind forcing. We then analyze the TSM, TOC and hydrographic data jointly and develop a simple approach to estimate the rates of suspended matter removal from the upper layer due to gravitational settling and turbulent mixing based on relative changes in TSM and TOC concentrations. Four distinct regions within the plume exhibiting different dynamics of suspended and dissolved constituents were identified on this basis. (C) 2018 Elsevier Ltd. All rights reserved.

机译：我们报告了一项实地调查的结果，该调查是在世界上最大的窒息泻湖Patos泻湖所排放的，漂浮的，携带泥沙的沿海羽流中进行的。使用紫外荧光LiDAR绘制总悬浮物（TSM）和有机物（以总有机碳，TOC表示）的浓度图，可以连续3次进行广泛的数据覆盖（同时测定TSM和TOC总计79,387）天。这些观察结果伴随着船舶和系泊站的水文测量。我们首先描述羽状流的天气变化，它对风力产生了强烈的响应。然后，我们将共同分析TSM，TOC和水文数据，并根据TSM和TOC浓度的相对变化，开发一种简单的方法来估算由于重力沉降和湍流混合而导致的上层悬浮物去除速率。在此基础上确定了羽状流中表现出不同的悬浮和溶解成分动态的四个不同区域。（C）2018 Elsevier Ltd.保留所有权利。

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《Estuarine Coastal and Shelf Science》 |2018年第may31期|40-45|共6页
作者
Zavialov P. O.; Pelevin V. V.; Belyaev N. A.; Izhitskiy A. S.; Konovalov B. V.; Krementskiy V. V.; Goncharenko I. V.; Osadchiev A. A.; Soloviev D. M.; Garcia C. A. E.; Pereira E. S.; Sartorato L.; Moller O. O. Jr.;
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Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Russian Acad Sci, PP Shirshov Inst Oceanol, Moscow, Russia;

Univ Fed Santa Catarina, Florianopolis, SC, Brazil;

Fed Univ Rio Grande, Rio Grande, Brazil;

Univ Fed Santa Catarina, Florianopolis, SC, Brazil;

Fed Univ Rio Grande, Rio Grande, Brazil;

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High resolution LiDAR measurements reveal fine internal structure and variability of sediment-carrying coastal plume

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