Influence of Suspended Sediment Concentration and Particle Sizes on the Sound Attenuation of the Fluvial Acoustic Tomography Technique

Q3 Environmental Science

Journal of Water and Environment Technology Pub Date : 2020-01-01 DOI:10.2965/jwet.20-024

M. Bahreinimotlagh, K. Kawanisi, A. Kavousi, R. Roozbahani, M. Abbasi, M. B. A. Sawaf

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引用次数: 2

Abstract

Fluvial Acoustic Tomography System (FATS) as an advanced technology acquires continuous streamflow data in rivers and estuaries even during floods. However, the acoustic signals are dramatically attenuated by suspending sediments which this problem is a new field of study. In this study, we propose a new equation to estimate the maximum applicable measurement distances ( MAMD s). It is based on the cross-sectional suspended sediment concentration ( ) and the particle sizes on the 30-kHz FATS. Our study results show that MAMD might be 2,380 m in the clear water. Moreover, the streamflow monitoring can be perfectly done while is less than 12.67 kg/m 3 with the particle radii of 3 μm, when the horizontal distance between two acoustic stations is 100 m. Also, the acoustic signals are not decayed if the particle radii equal to 20 mm and the maximum is 6.6 kg/m 3 . This study highlights the performance of FATS in the presence of high and provides a better perspective of applying FATS in different rivers with high variability of .

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悬沙浓度和粒径对河流声层析成像技术声衰减的影响

河流声层析成像系统(FATS)作为一种先进的技术，即使在洪水期间也能获得河流和河口的连续流量数据。然而，泥沙对声波信号的衰减是一个新的研究领域。在这项研究中，我们提出了一个新的公式来估计最大适用测量距离(MAMD s)，它是基于横截面悬浮泥沙浓度()和30 khz fat上的颗粒尺寸。我们的研究结果表明，在清水中，MAMD可能为2,380 m。当两声站水平距离为100 m时，粒径小于12.67 kg/m 3，粒径半径为3 μm时，可以很好地监测到水流。当颗粒半径为20mm，最大为6.6 kg/ m3时，声信号不发生衰减。本研究强调了高通量条件下脂肪的性能，并为在不同河流中应用脂肪提供了一个更好的视角。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Water and Environment Technology Environmental Science-Water Science and Technology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

43 weeks

期刊介绍： The Journal of Water and Environment Technology is an Open Access, fully peer-reviewed international journal for all aspects of the science, technology and management of water and the environment. The journal’s articles are clearly placed in a broader context to be relevant and interesting to our global audience of researchers, engineers, water technologists, and policy makers. JWET is the official journal of the Japan Society on Water Environment (JSWE) published in English, and welcomes submissions that take basic, applied or modeling approaches to the interesting issues facing the field. Topics can include, but are not limited to: water environment, soil and groundwater, drinking water, biological treatment, physicochemical treatment, sludge and solid waste, toxicity, public health and risk assessment, test and analytical methods, environmental education and other issues. JWET also welcomes seminal studies that help lay the foundations for future research in the field. JWET is committed to an ethical, fair and rapid peer-review process. It is published six times per year. It has two article types: Original Articles and Review Articles.