{"title":"奈特入口湍流微结构声散射观测","authors":"M. Trevorrow","doi":"10.1121/1.1809151","DOIUrl":null,"url":null,"abstract":"Calibrated echo-sounder surveys were conducted on the backscatter from turbulent microstructure within internal lee-waves at a sill in Knight Inlet, B.C. Volumetric scatter strengths in the range −90 to −75 dB (re 1 m−1) were observed within narrow (1 to 10 m thick) layers at three frequencies (38, 120, and 200 kHz). The observed acoustic scattering levels were in reasonable agreement with published models for microstructure scattering. A new volumetric multi-beam sonar was used to image the spatial structure of the turbulent billows.","PeriodicalId":87384,"journal":{"name":"Acoustics research letters online : ARLO","volume":"112 1","pages":"1-6"},"PeriodicalIF":0.0000,"publicationDate":"2005-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":"{\"title\":\"Observations of acoustic scattering from turbulent microstructure in Knight Inlet\",\"authors\":\"M. Trevorrow\",\"doi\":\"10.1121/1.1809151\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Calibrated echo-sounder surveys were conducted on the backscatter from turbulent microstructure within internal lee-waves at a sill in Knight Inlet, B.C. Volumetric scatter strengths in the range −90 to −75 dB (re 1 m−1) were observed within narrow (1 to 10 m thick) layers at three frequencies (38, 120, and 200 kHz). The observed acoustic scattering levels were in reasonable agreement with published models for microstructure scattering. A new volumetric multi-beam sonar was used to image the spatial structure of the turbulent billows.\",\"PeriodicalId\":87384,\"journal\":{\"name\":\"Acoustics research letters online : ARLO\",\"volume\":\"112 1\",\"pages\":\"1-6\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acoustics research letters online : ARLO\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1121/1.1809151\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustics research letters online : ARLO","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1121/1.1809151","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
摘要
在不列颠哥伦比亚省Knight Inlet的一个储层中，校准了回声测深仪对内部背风波湍流微观结构的后向散射进行了测量，在三种频率(38、120和200 kHz)下，在狭窄(1至10 m厚)层中观察到- 90至- 75 dB (re 1 m−1)的体积散射强度。观测到的声散射水平与已发表的微结构散射模型基本一致。采用一种新型体积多波束声纳对湍流的空间结构进行了成像。
Observations of acoustic scattering from turbulent microstructure in Knight Inlet
Calibrated echo-sounder surveys were conducted on the backscatter from turbulent microstructure within internal lee-waves at a sill in Knight Inlet, B.C. Volumetric scatter strengths in the range −90 to −75 dB (re 1 m−1) were observed within narrow (1 to 10 m thick) layers at three frequencies (38, 120, and 200 kHz). The observed acoustic scattering levels were in reasonable agreement with published models for microstructure scattering. A new volumetric multi-beam sonar was used to image the spatial structure of the turbulent billows.
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