2022 International Conference on Ocean Studies (ICOS)最新文献

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Multiband Electrical Equivalent of a Powerful Low-Frequency Hydroacoustic Transducer 一个强大的低频水声换能器的多波段等效电

2022 International Conference on Ocean Studies (ICOS) Pub Date : 2022-10-05 DOI: 10.1109/ICOS55803.2022.10033403

A. Britenkov, R.V. Travin

{"title":"Multiband Electrical Equivalent of a Powerful Low-Frequency Hydroacoustic Transducer","authors":"A. Britenkov, R.V. Travin","doi":"10.1109/ICOS55803.2022.10033403","DOIUrl":"https://doi.org/10.1109/ICOS55803.2022.10033403","url":null,"abstract":"The application of electrical equivalents of transducers reduces the cost and time of development of matching devices for testing and tuning excitation systems when creating high-power low-frequency emitting structures that radiate signals with an acoustic-power level of hundreds and thousands of watts in a frequency range of up to 1000 Hz. Hydroacoustic transducer is a combination of mechanical and electrical oscillatory systems in which electrical energy is converted into mechanical energy and acoustic wave radiation. Thus, the transducer cannot be reduced to an equivalent circuit in the form of a generalized electrical circuit with only one resonant frequency band, as is generally accepted. Due to the variety of physical processes occurring during electroacoustic transformation in hydroacoustic emitters, it is necessary to use multiband electrical equivalents of emitters to simulate the emission of sound signals. This paper presents the results of measuring the electrical impedances of multi-resonant electrical equivalents of high-power low-frequency hydroacoustic radiators. The tested model of the dual-band electrical equivalent of a high-power hydroacoustic emitter is manufacturable, meets the necessary electrical strength, and provides simulation of the emission of hydroacoustic signals with an acoustic power of more than 150 W.","PeriodicalId":263531,"journal":{"name":"2022 International Conference on Ocean Studies (ICOS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129198453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Algorithms of the AUV control system for operation under the lower ice edge 水下航行器控制系统下冰缘运行算法

2022 International Conference on Ocean Studies (ICOS) Pub Date : 2022-10-05 DOI: 10.1109/ICOS55803.2022.10033351

A. Inzartsev, Andrey Bagnitckii, M. Panin

引用次数: 0

Assessment of environmental risk to Vladimir Bay, Sea of Japan, exposed to heavy metal pollution 日本海弗拉基米尔湾暴露于重金属污染的环境风险评估

2022 International Conference on Ocean Studies (ICOS) Pub Date : 2022-10-05 DOI: 10.1109/ICOS55803.2022.10033358

Yulya A. Galysheva, Anna D. Pelekh, T. Boychenko

{"title":"Assessment of environmental risk to Vladimir Bay, Sea of Japan, exposed to heavy metal pollution","authors":"Yulya A. Galysheva, Anna D. Pelekh, T. Boychenko","doi":"10.1109/ICOS55803.2022.10033358","DOIUrl":"https://doi.org/10.1109/ICOS55803.2022.10033358","url":null,"abstract":"The present paper provides an assessment of the environmental risk to Vladimir Bay, Sea of Japan, where the components of the environment and biota are exposed to heavy metals (Pb, Cd, Zn, Cu, and Ni). The abundance of metal-resistant forms of bacteria in the surface waters of the bay is quantified. The content and spatial distribution of heavy metals (HM) in bottom sediments are assessed. HM concentrations in sea urchin gonads are estimated. The Cd contamination of the waters in the bay has been found to be significant (more than 3 maximum allowable concentrations). Exceedance of background concentrations and Clarke numbers in bottom sediments were recorded for several HM. The contamination factor Cf is calculated. On the basis of this factor, the level of Zn contamination of bottom sediments is categorized as high, and the Cd and Cu contamination as very high. The total contamination degree Cd indicates a high level of bottom sediment contamination with the HM under study. Environmental risk indices are calculated. On the basis of the SQG-Q value, sediments of the bay are categorized as moderately toxic. It has been found that, according to the Technical Regulations of the Customs Union standards on Safety of Food Products (TR CU 021/2011), the Cd and Pb concentrations in gonads of sea urchins from Vladimir Bay do not exceed the allowable values. Nevertheless, the calculated incremental lifetime cancer risk (ILCR) values predict the existence of cancer risk from eating gonads.","PeriodicalId":263531,"journal":{"name":"2022 International Conference on Ocean Studies (ICOS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134335623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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