OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology最新文献_第3页

Stability Of Towfish Used As Sonar Platforms 拖鱼用作声纳平台的稳定性

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.607702

J. M. Preston

引用次数: 17

Distributed Computing Filters : Multisensor Marine Applications 分布式计算滤波器:多传感器海洋应用

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.612700

D. Lainiotis, K. Plataniotis, C. Charalampous

引用次数: 3

On The Gain Available From A Passive Synthetic Aperture Array 无源合成孔径阵列增益研究

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.612716

E. Sullivan, W. M. Carey

引用次数: 1

Formulation Of Non-uniform Circular Projector Arrays With Improved Performance 改进性能的非均匀圆形投影仪阵列的配方

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.612713

P. Joseph, P. Pillai

引用次数: 0

Numerical Models For Natural Resource Damage Assessment Under CERCLA 基于CERCLA的自然资源损害评估数值模型

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.612652

M. Reed, D. French

引用次数: 0

Design And Development Of An Autocalibrating Radiometer For Deep Sea Biooptical Studies 深海生物光学研究用自校准辐射计的设计与研制

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.612748

E. Widder, F. Caimi, L. Taylor, R.F. Tusting

{"title":"Design And Development Of An Autocalibrating Radiometer For Deep Sea Biooptical Studies","authors":"E. Widder, F. Caimi, L. Taylor, R.F. Tusting","doi":"10.1109/OCEANS.1992.612748","DOIUrl":"https://doi.org/10.1109/OCEANS.1992.612748","url":null,"abstract":"Abstrucr Measurements of light underwater are critical to research investigations involving a wide range of aquatic photo processes. Solid state detectors used in modern underwater irradiance meters are excellent detectors of bright sunlight in surface waters. However, these detectors are not sensitive enough to measure light over the intensity and temporal response range which are characteristic of the photic reactions of many marine organisms. Solar radiation below the epipelagic zone, lunar radiation and bioluminescence all exert a powerful influence on the population dynamics of the marine environment and therefore require accurate quantification. Photomultiplier tubes (PMTs), which have the sensitivity to measure such low intensities are not commonly used in radiometric instruments because they cannot match the accuracy and reliability of solid state detectors in field deployment. The Low Light Auto-Radiometer (LoLAR) was developed to extend the lower limit of contemporary underwater irradiance detectors. The system uses a PMT but circumvents the temperature sensitivity and poor stability of the tube with an internal calibration circuit.","PeriodicalId":158109,"journal":{"name":"OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125560905","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: 13

Fish-induced Bias In Acoustic Doppler Current Profiler Data 声学多普勒电流剖面仪数据中的鱼致偏置

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.607670

H. Freitag, M. Mcphaden, P.E. PuIIen

引用次数: 17

Source Localization In The Presence Of A Mesoscale Eddy 中尺度涡旋存在下的源定位

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.612724

J. Shorey, L. Nolte

引用次数: 0

Long Range Acoustic Correlation Current Profiler 远程声学相关电流分析器

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.607659

S. Bradley, S. Kuo

{"title":"Long Range Acoustic Correlation Current Profiler","authors":"S. Bradley, S. Kuo","doi":"10.1109/OCEANS.1992.607659","DOIUrl":"https://doi.org/10.1109/OCEANS.1992.607659","url":null,"abstract":"A new low frequency, long range acoustic correlation current profiller (ACCP) has recently been built and tested. Results indicate that water profiles were successfully measured to depths of approximately U00 meters and seabed returns were recorded to depths of approximately 5000 meters. The ACCP water profiles agree with both the Doppler results and theoretical predictions for signal-to-noise ratio and variance. relatively wide beam acoustic transducer of angular width 8 and frequency f.,. The returning pressure waves are monitored in time at differing spatial locations. The signal return from one receiver at a time, t, will be highly correlated with the return from another receiver at a time e+ P, provided that the scatters have moved exactly one-half the spatial vector difference between the two receivers in a time T,. This effect is referred to as \"waveform invariance\" fl). Equivalently, \"waveform invariance\" implies that the time domain return from a series of stationary scatterers depends not on the exact location of the transmitter and receiver, but rather only on the midpoint of the line segment which joins the transmitter and receiver. The principle of waveform invariant geometry assumes only that the vertical distance to the scatterers is large compared to the transducer element separation. For the correlation sonar, the transducer separations are typically of the same order of magnitude as the wavelength of sound, and therefore this approximation applies in almost every conceivable case. Another interesting feature of waveform invariance is the complete lack of any dependence of the horizontal velocity on the speed of sound in the water.","PeriodicalId":158109,"journal":{"name":"OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124934846","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: 8

First Successful Rotary Diamond Drilling From Submersibles 首次成功利用潜水器进行旋转金刚石钻井

OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology Pub Date : 1992-10-26 DOI: 10.1109/OCEANS.1992.607707

D. Stakes, T. Tengdin

{"title":"First Successful Rotary Diamond Drilling From Submersibles","authors":"D. Stakes, T. Tengdin","doi":"10.1109/OCEANS.1992.607707","DOIUrl":"https://doi.org/10.1109/OCEANS.1992.607707","url":null,"abstract":"Abs t r ac t Chronology and mineralogy studies of \"black-smoker\" sulfide-sulfate deposits required the development of a small diamond-bit drill that could be deployed from a submersible. A core bit surface set with natural diamonds and a concentric double barrel with internal bearing assembly were custom made by scaling down existing designs from Christensen Mining Products. Modifications to the b a r r e l included reducing the overall length, lengthwise splitting of the stainless steel inner barrel , and a basket-style core catcher to be deployed In series with a conventional collet-type core catcher. The dril l is hydraulically powered with pilot cont ro l on rotational speed, fluid circulation flow and weight on bit. This drill has been successfully deployed on three cruises recovering cores that measure up to 48 cm in length through the walls of active black smoker chimneys [l]. A manifold to obtain multiple cores per dive is under development and the tool is being adapted to ROV deployment. Th i s pape r details the development of this tool, the constraints imposed by submersible deployment, and the possibilities for a new generation of in situ experiments based on this technology.","PeriodicalId":158109,"journal":{"name":"OCEANS 92 Proceedings@m_Mastering the Oceans Through Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128040771","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