Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.最新文献

The Liverpool Bay coastal observatory 利物浦湾海岸天文台

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2006-05-23 DOI: 10.1109/BALTIC.2006.7266194

M. J. Howarth, R. Proctor, M. Smithson, R. Player, P. Knight

{"title":"The Liverpool Bay coastal observatory","authors":"M. J. Howarth, R. Proctor, M. Smithson, R. Player, P. Knight","doi":"10.1109/BALTIC.2006.7266194","DOIUrl":"https://doi.org/10.1109/BALTIC.2006.7266194","url":null,"abstract":"The pilot coastal observatory in the eastern Irish Sea integrates (near) real-time measurements with coupled models in a pre-operational coastal prediction system. The aim is to develop the underpinning science for marine management, focusing on the impacts of storms, eutrophication and the relative importance of events viz-a-viz the mean. Real time current measurements are obtained from a seabed mounted acoustic Doppler current profiler; deployment started in August 2002, via acoustic modems and the Orbcomm satellite e-mail system, and from a shore based HF radar via telephone landlines. There are also real time measurements from a surface buoy and a directional wave buoy and from an instrumented ferry, all via Orbcomm. The measurements are integrated with a suite of nested 3-dimensional hydrodynamic and ecological models run daily, focusing on the Observatory area by covering the ocean/shelf of northwest Europe (at 12 km resolution), the Irish Sea (at 1.8 km) and Liverpool Bay (at 200-300m resolution). All measurements and model outputs are displayed on the Web-site (http://coastobs.pol.ac.uk).","PeriodicalId":264883,"journal":{"name":"Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2006-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127173552","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: 22

Surface wave decay and directional spectra in the marginal sea ice zone measured by an autonomous underwater vehicle 自主水下航行器测量的边缘海冰区表面波衰减和方向谱

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506330

D. Hayes, A. Jenkins, S. McPhail

{"title":"Surface wave decay and directional spectra in the marginal sea ice zone measured by an autonomous underwater vehicle","authors":"D. Hayes, A. Jenkins, S. McPhail","doi":"10.1109/CCM.2005.1506330","DOIUrl":"https://doi.org/10.1109/CCM.2005.1506330","url":null,"abstract":"The March 2003 deployment of Autosub in the Antarctic was the first field study under the Autosub Under Ice program of the UK Natural Environment Research Council. Several missions were run under sea ice in the western Bellingshausen Sea at depths ranging from 90 to 200 m. Data from the upward-looking ADCP on the autonomous underwater vehicle (AUV) indicate a strongly oscillating horizontal velocity of the ice underside due to ocean swell. Swell period, height, direction, and directional spread are computed every 800 m from the ice edge to 10 km inward. To our knowledge, these are the first scalar and directional wave data collected by an AUV under sea ice. We observe exponential, period-dependent attenuation of waves propagating through sea ice. Mean period increases with distance from the ice edge. Directional spectra show gradual changes in swell properties during propagation through the ice pack. The wave field appears to refract during propagation. The spread does not seem to relate to distance from the ice edge. More under-ice runs and modeling are needed to confirm these observations. If suitably deployed, an ordinary ADCP may be used with this technique to study waves in open or ice-covered water, both scalar and directional properties.","PeriodicalId":264883,"journal":{"name":"Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123691753","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: 2

Field intercomparison of Channel Master ADCP with RiverSonde radar for measuring river discharge 河道主ADCP与RiverSonde雷达测量河道流量的现场比对

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506351

P. Spain, R. Marsden, D. Barrick, C. Teague, C. Ruhl

引用次数: 2

Hydratools, a MATLAB/spl reg/ based data processing package for Sontek Hydra data Hydratools，基于MATLAB/spl reg/的Sontek Hydra数据处理软件包

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506360

M. Martini, F. L. Lightsom, C. Sherwood, Jingping Xu, J. Lacy, A. Ramsey, R. Horwitz

{"title":"Hydratools, a MATLAB/spl reg/ based data processing package for Sontek Hydra data","authors":"M. Martini, F. L. Lightsom, C. Sherwood, Jingping Xu, J. Lacy, A. Ramsey, R. Horwitz","doi":"10.1109/CCM.2005.1506360","DOIUrl":"https://doi.org/10.1109/CCM.2005.1506360","url":null,"abstract":"The U.S. Geological Survey (USGS) has developed a set of MATLAB tools to process and convert data collected by Sontek Hydra instruments to netCDF, which is a format used by the USGS to process and archive oceanographic time-series data. The USGS makes high-resolution current measurements within 1.5 meters of the bottom. These data are used in combination with other instrument data from sediment transport studies to develop sediment transport models. Instrument manufacturers provide software which outputs unique binary data formats. Multiple data formats are cumbersome. The USGS solution is to translate data streams into a common data format: netCDF. The Hydratools toolbox is written to create netCDF format files following EPIC conventions, complete with embedded metadata. Data are accepted from both the ADV and the PCADP. The toolbox will detect and remove bad data, substitute other sources of heading and tilt measurements if necessary, apply ambiguity corrections, calculate statistics, return information about data quality, and organize metadata. Standardized processing and archiving makes these data more easily and routinely accessible locally and over the Internet. In addition, documentation of the techniques used in the toolbox provides a baseline reference for others utilizing the data.","PeriodicalId":264883,"journal":{"name":"Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129407319","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: 4

The validity of apparent subsurface jet currents in the Gulf of Mexico 墨西哥湾地表下急流的有效性

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506327

D. Driver, G. Jeans, C. Harragin, A. Moore

引用次数: 1

Discharge and current profiles under the ice 冰下的放电和电流分布图

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506349

T. Mudge, J. Sloat, J. Chen

{"title":"Discharge and current profiles under the ice","authors":"T. Mudge, J. Sloat, J. Chen","doi":"10.1109/CCM.2005.1506349","DOIUrl":"https://doi.org/10.1109/CCM.2005.1506349","url":null,"abstract":"In 2004 SonTek developed, in conjunction with Environment Canada, a new methodology for measuring current flow under ice cover. Mini-Acoustic Doppler Profilers (ADP) were deployed from above the ice cover and water velocity data were collected with SonTek's new Stationary Measurement Software. These initial field tests were made on the Mackenzie River at Fort Simpson, North West Territories, Canada. The original field site was chosen for its demanding environment conditions. At Fort Simpson, the Mackenzie River was over 1 km wide, with approximately thick 1 m of fast ice, areas with up to 80 cm of frazzle ice and currents of about 1 m/s. Temperatures dropped to below -20/spl deg/C during part of the February field tests. A full set of Mini-ADPs (3.0 MHz, 1.5 MHz and PC-ADP) were utilized at various locations to generate velocity profiles from the water-ice boundary layer to the bottom boundary layer. SonTek's Stationary Software was used to stitch various velocity profiles into a single discharge summary. Further refinements to the methodology and software have been ongoing in Canada and Asia. In March 2005 data was collected from a new field location at Heihe, Heilongjiang province in Northern China. The Heilongjiang River borders northern China and Siberia. It was about 700 m wide, with a maximum velocity of about 0.7 m/s and a total flow in winter of approximately 600 m/sup 3//s. In spring, the flow rates increase and the maximum velocities can get to 2 m/s.","PeriodicalId":264883,"journal":{"name":"Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132436966","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: 2

A towed 75 kHz ADCP for operational deepwater current surveys 拖曳式75 kHz ADCP，用于操作深水海流测量

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506332

S. Anderson, P. Matthews

{"title":"A towed 75 kHz ADCP for operational deepwater current surveys","authors":"S. Anderson, P. Matthews","doi":"10.1109/CCM.2005.1506332","DOIUrl":"https://doi.org/10.1109/CCM.2005.1506332","url":null,"abstract":"This paper describes the development of a towed acoustic Doppler current profiler (ADCP) system that is used to support operational monitoring of deepwater currents. The towed body configuration provides a quiet and stable sensor platform that can be readily relocated and deployed from different vessels. High-frequency ADCPs are used in towed bodies for several shallow water applications. This towfish system is unique because it employs a 75 kHz RDI Long Ranger ADCP packaged in a large Endeco/YSI type 850 V-Fin. The towfish is 1.3 /spl times/ 1.4 /spl times/ 0.7 meters and weighs 185 kg in air. The towfish, winch and electronics are housed in a customized container that allows for a single point lift for loading and a 2.5 by 3.5 meter footprint on deck. In 2004, the towfish was used operationally in the Gulf of Mexico to survey upper ocean currents. The surveys were successful with only minor setbacks. The system calibrations were found to be very robust and stable. The towfish was deployed at nominally 20 meters depth with tow speeds of 1 to 3 m/s. The ADCP provided continuous along-track profiles with good data down to the instrument's maximum range of 500 meters. Raw data were telemetered to shore for processing and integration with satellite imagery and other in situ observations to provide a real-time synoptic analysis.","PeriodicalId":264883,"journal":{"name":"Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133205216","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: 6

Acoustic measurements of baroclinic energy and momentum fluxes on the Hawaiian ridge 夏威夷脊上斜压能量和动量通量的声学测量

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506329

R. Pinkel

{"title":"Acoustic measurements of baroclinic energy and momentum fluxes on the Hawaiian ridge","authors":"R. Pinkel","doi":"10.1109/CCM.2005.1506329","DOIUrl":"https://doi.org/10.1109/CCM.2005.1506329","url":null,"abstract":"Summary form only given. Multibeam Doppler acoustic sounders have been used for the past 30 years to estimate the three components of fluid velocity as a function of range. Efforts to use the separate beams as a spatial array, exploiting the velocity variability that occurs across the array have been less common. Estimates of Reynolds stresses have proven significant in under-ice and sea floor boundary layers. However, since the pioneering work of Plueddemann (1983), significant stresses have not been observed in the mid-water column. In September-October 2002, an eight-beam 140-160 kHz sonar was deployed at 400 m depth above the Kaena Ridge, west of the Hawaiian island of Oahu. The site is a known generating area for internal tides. One objective of the study was to determine the location of momentum and energy fluxes associated with baroclinic tidal rays. In contrast to the open ocean case, strong quasi-deterministic momentum fluxes are observed over the Kona Ridge, with magnitudes approaching 10/sup -4/ m/sup 2//s/sup 2/. The spatial pattern of the flux suggests that numerous source locations are contributing to the tidal motion in the lower half of the 1100 m-deep water column. In the upper ocean the dominant motion was generated at the northern edge of the ridge crest. Significant stresses are also found in high-frequency lee waves that are found near the sea floor.","PeriodicalId":264883,"journal":{"name":"Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129930115","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

Advance warning of loop current from single-site SeaSonde on Genesis oil platform in the Gulf of Mexico 墨西哥湾Genesis石油平台单站点SeaSonde环流预警

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506337

D. Barrick, R. Long, C. Whelan, C. Cooper, J. Abadín

引用次数: 3

Real-time flow measurement in the River Guadiana estuary using acoustic Doppler technology 声学多普勒技术在瓜迪亚纳河河口的实时流量测量

Proceedings of the IEEE/OES Eighth Working Conference on Current Measurement Technology, 2005. Pub Date : 2005-06-28 DOI: 10.1109/CCM.2005.1506348

J. Parra, A. Alonso-Martirena Tornos, F. B. López, A.P. Castillo

引用次数: 2