Research on Development of the Rip Current Measuring System by using Acoustic Tomography

声学断层扫描离岸流测量系统的开发研究

• 批准号: 23560972
• 负责人: ISHIDA Hiroshi
• 金额: $ 3.24万
• 依托单位: Oshima National College of Maritime Technology (2013)Kobe University (2011-2012)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560972/
• 关键词: 音響トモグラフィー; 離岸流; 計測装置; 開発研究

Every year, more than 300 swimming people lose their lives in beaches. These casualties are mainly caused by the rip current flowing to offshore. For the continuous observation of the rip current, The aim of this research is to develop the real-time monitoring system of the rip current by using the acoustic tomography.The system consists of one dual-frequency acoustic fish-finder, two broad-band acoustic transducers, a set of sound reflectors and a data acquisition network. The modified dual-frequency acoustic fish-finder alternatively transmit and receive the sound signals of 50kHz at a few seconds interval. The observations were carried out in the Uradome Beach of Tottori Prefecture in September of 2012 and 2013. Based on these observational data, the current velocity fields were well reconstructed and weak offshore currents were detected. In conclusion, it was proved that the developed measurement system have a potential capability of monitoring the rip current.

每年有300多名游泳者在海滩上丧生。这些人员伤亡主要是由流向近海的裂流造成的。为了实现对裂流的连续观测，本研究的目的是利用声层析成像技术研制裂流实时监测系统，该系统由一台双频声探鱼仪、两个宽带声换能器、一套声反射器和数据采集网络组成。改进后的双频声波探鱼仪以几秒钟的间隔交替发射和接收50kHz的声波信号。观测于2012年9月和2013年9月在鸟取县浦留海滩进行。根据这些观测资料，很好地重建了海流速度场，并检测到了微弱的离岸流。总之，证明了所开发的测量系统具有监测裂流的潜在能力。

项目成果

Realization of Acoustic Monitoring of Rip Current based on Passive Reciprocal Sound Transmissions

基于被动互易声传输的离岸流声学监测的实现

• 发表时间: 2013
• 期刊: Proceedings of 2013 IEEE International Underwater Technology
• 作者: Tomoya Inoue;Hiroyuki Osawa;Ken Takagi;Akira Asada;Masashi Mochizuki;Tokihiro Katsui;Shingo Tsukui;Iwao Nakano and Hiroshi Ishida
• 通讯作者: Iwao Nakano and Hiroshi Ishida

Measurement System for Acoustic Monitoring of Rip Current

裂流声学监测测量系统

• 发表时间: 2013
• 期刊: Proceedings of the 8th ACM International Conference on Underwater Networks & Systems
• 作者: Iwao Nakano;Hiroshi Ishida and Ichiro Deguchi
• 通讯作者: Hiroshi Ishida and Ichiro Deguchi

音響反射体を用いた双方向音波伝搬システムによる離岸流観測

使用声学反射器的双向声音传播系统进行裂流观测

• 发表时间: 2012
• 期刊: 海洋調査技術学会第24回研究成果発表会講演要旨集
• 作者: 中埜岩男;石田廣史
• 通讯作者: 石田廣史

An acoustic monitoring system of the rip current based on passive reciprocal transmissions

基于无源互易传输的离岸流声学监测系统

• 发表时间: 2012
• 期刊: Proceedings of the OCEANS 2012 IEEE YEOSU Conference & xhibition
• 作者: 岩田 拡也;松本 治;笹健児，清水聖治，古賀英司，藤井雅之;Iwao Nakano and Hiroshi Ishida
• 通讯作者: Iwao Nakano and Hiroshi Ishida

離岸流場周辺の波高と水位分布に関する研究

近岸海流波高及水位分布研究

• 发表时间: 2011
• 期刊: 土木学会論文集B2(海岸工学)
• 作者: 有田守・出口一郎・入江祐介・松本卓郎・杉森貴之