The VEKTOR-AKWA, an acoustic current meter for use in 3-dimensional dynamic flows

Botma, H

doi:10.1109/curm.1990.110898

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Both of the articles found cover only the testing of the current meters in oblique flows. The two reports are by Appell (1978) and Botma( 1990).…”

Section: Acoustic Metersmentioning

confidence: 99%

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Review of literature on the testing of point-velocity current meters

Thibodeaux¹

1994

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“…Both of the articles found cover only the testing of the current meters in oblique flows. The two reports are by Appell (1978) and Botma( 1990).…”

Section: Acoustic Metersmentioning

confidence: 99%

“…The paper by Botma (1990) briefly covers some tow-tank testing of a three-dimensional VEKTOR-AKWA acoustic current meter. The meter was rotated in the vertical and horizontal directions during testing.…”

Section: Acoustic Metersmentioning

confidence: 99%

Review of literature on the testing of point-velocity current meters

Thibodeaux¹

1994

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“…horizontal cunent, stratification, and source intensity for diffuse flow 110,11]. 'lbe measurements and observations rep;>cted were made from OSV ALVIN on a dive secie& (dive nuPbers 1916(dive nuPbers -1927 in September 1987.…”

Section: Section 5 Conclusion and Recommendationsmentioning

confidence: 99%

Diffuse flow from hydrothermal vents

Trivett¹

1991

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The effluent (rom a collection of diffuse hydrothennal vents was modelled to determine the fate of this source of flow under typical environmental conditions at seafloor spreading centers. A laboratory simulation was conducted to test an analytic model of dif{use plume rise. The results showed that diffuse plumes are likely to remain near the seafloor, with their maximum rise height scaled with the diameter of the source of diffuse flow. The entrainment of ambient seawater into these plumes is limited by the proximity to the seaOoor, thus slowing the rate of dilution.The model of diffuse plume behaviour was used to guide the design and implementation of a scheme for monitoring the flow from diffuse hydrothermal vents in the ocean. A deployment of an array at the Southern Juan de Fuca Ridge yielded measurements of a variety of diffuse plume properties, including total heat output.Two distinct sources of hydrothermal flow were detected during the field deployment. The larger source was 1-1 .5km north of the instrument array. and its energy output was 450±270MW. A smaller SOUIre was located 100m east of one instrument in the array. The energy output of this source was 12±8MW. The rise heights of the cenlerlines of these plumes were 45m and 10m, respectively. AcknowledgementsThe stereotype of science as an exact, impersonal endeavour is complete hogwash. have been fortunate to meet some wonderful, inspiring personalities while working on the research for this thesis. In fact, I would never have been able to present this work to you, dear reader, without their generosity.The ideas contained herein grew from the guidance 1 have received from Sandy Williams, Joe Cann, and Gene Terray. They have been Advisors, in the best sense oC the word, and they have been true friend s.Education is much morc than study, it is apprenticeship. Dick Edwards has shown me kindness, generosity, and dedication in addition to giving me the benefit of his awesome skill and experience. Al Bradley, Richard Koehler, Paul Boutin, Al Morton, Sarah Little, Craig Dorman, and Tom Gross have been both inspirational, and instrumental in making my field research possible. Steve Liberatore, Al DueSler, John Kemp, Rod Catanach, Rick Chandler, Al Gordon, Dudley Foster, Karlen Wannop, Laurel Moore, and Judy While have both helped me do things, and have just gone ahead and done them (or me. The WHOl security staff, Ron Craft, Joe Motta, Bill Cruwys, Dave MacDonald, J.e. Coddington, J.e. Williams, Ron Woods, and Nadine Athearn made it possible to work late, and get home dry (not to mention keeping me sane, or at least as sane as them). I have tremendous respect for all of these fine people. They make WHOl a great place to do research, and they make it a delightful experience.My work has involved going to sea on the NOAA ship Discoverer, and the R/V Atlantis It My thanks go to the excellent crews of both these vessels. Scientists at NOAA-PMEL have given me a chance to deploy my eqwpment on their cruises. J acknowledge the help and support given by Ga...

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