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Showing 1 to 20 of 27 for “"Acoustic Doppler Current Profiler (ADCP)"”.

  1. Vertical Distributions of Zooplankton at the Mouth of Chesapeake Bay and Calibration of Backscatter From an Acoustic Doppler Current Profiler

    Jenkins, Arthur Keith2019

    … Bay and attempted to derive biological data from acoustic Doppler current profiler (ADCP) backscatter. A single site was occupied in the North Channel at the mouth of Chesapeake Bay (37° 04' N, 75° 58' W) from 17.0–19.7 November 1999. Temperature, salinity, fluorescence, light transmission, …

    odu Repository record

  2. Currents through the Golden Gate

    Petzrick, Ernest PaulMonterey, California. Naval Postgraduate School1993

    … a bottom mooring consisting of an upward looking acoustic doppler current profiler (ADCP) and a conductivity-temperature pressure (CTD) instrument were deployed in the Golden Gate. Tidal constituents were derived from least squares fit on pressure and current data. The amplitude of the M2 tide was …

    nps Repository record

  3. The Variability of High-Frequency Motions and Their Interactions with the Mesoscale on the Mississippi Shelf

    Earls, Jordan2019

    … mesoscale motions. For this purpose, we use Acoustic Doppler Current Profiler (ADCP) measurements collected at nearshore (23 m), mid-shelf (60 m), and shelf break (88 m) stations. High-frequency motions are defined as motions with periods less than 36 hours, whereas mesoscale motions have …

    usm Repository record

  4. Current velocity profiling from an autonomous underwater vehicle with the application of Kalman filtering

    Zhang, YanwuMassachusetts Institute of Technology1998

    … schemes for extracting Earth-referenced current velocity from relative current velocity measurement made by an Acoustic Doppler Current Profiler (ADCP) borne by an Autonomous Underwater Vehicle (AUV). Compared with conventional approaches, current profiling from an AUV platform has …

    mit Repository record

  5. Measuring surface ocean wave height and directional spectra using an Acoustic Doppler Current Profiler from an autonomous underwater vehicle

    Haven, ScottMassachusetts Institute of Technology and Woods Hole Oceanographic Institution2012

    The Acoustic Doppler Current Profiler (ADCP) is a proven technology which is capable of measuring surface wave height and directional information, however it is generally limited to rigid, bottom mounted applications which limit its capabilities for measuring deep water waves. By employing an …

    woods-hole Repository record

  6. Improvements to a Real-Time, Satellite-Derived Surface Current Product (OSCAR) and Evaluation in the Intra-American Sea

    Robinson, Mindy JoDigital Commons @ University of South Florida2011

    … predictive coding for use in the Ocean Surface Currents Analysis, Real-time (OSCAR) is developed and tested. This method is implemented by Earth and Space Research (ESR) to produce operational height fields that are in turn used to calculate the geostrophic component velocity of OSCAR. The …

    usf Repository record

  7. Measuring surface ocean wave height and directional spectra using an Acoustic Doppler Current Profiler from an autonomous underwater vehicle

    Haven, ScottMassachusetts Institute of Technology2012

    The Acoustic Doppler Current Profiler (ADCP) is a proven technology which is capable of measuring surface wave height and directional information, however it is generally limited to rigid, bottom mounted applications which limit its capabilities for measuring deep water waves. By employing an …

    mit Repository record

  8. A qualitative and physical analysis of processes around the Mascarene plateau

    Vianello, Patrick AngusDepartment of Oceanography2015

    … the October/November 2008 ASCLME (Agulhas Somali Current Large Marine Ecosystem) cruise on board the Dr Fridtjof Nansen which surveyed the region around the Mascarene Plateau. Due to the paucity of data in the region, the cruise was a routine cruise with no specific scientific questions to be …

    cape-town Repository record

  9. Error and uncertainty in estimates of Reynolds stress using ADCP in an energetic ocean state

    Rapo, Mark A.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2006

    … as the turbulent flow is advected with the mean current (Taylor's frozen turbulence approximation). However, the Acoustic Doppler Current Profiler (ADCP) looks at radial wavenumbers and frequencies, and finds overlap. Another approach is to exploit the physical differences of each process, namely …

    woods-hole Repository record

  10. A method for on-line water current velocity estimation using low-cost autonomous underwater vehicles

    Dolan, Christopher R.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2020

    … Additionally, some capabilities such as water current velocity measurement traditionally requires the addition of equipment that is not only expensive, but also whose size and power consumption can adversely affect operating characteristics and deployment times. This thesis expands on previous …

    woods-hole Repository record

  11. A method for on-line water current velocity estimation using Lol-cost autonomous underwater vehicles

    Dolan, Christopher R.,Lieutenant Commander(Christopher Raymond)Massachusetts Institute of Technology2020

    … Additionally, some capabilities such as water current velocity measurement traditionally requires the addition of equipment that is not only expensive, but also whose size and power consumption can adversely affect operating characteristics and deployment times. This thesis expands on previous …

    mit Repository record

  12. An Efficient Method for Measuring the Dispersion Coefficient in Rivers

    Carr, Meredith L.University of Illinois at Urbana-Champaign2015

    … velocity and bathymetry data measured with an acoustic Doppler current profiler (ADCP) to estimate the longitudinal dispersion coefficient K is evaluated. If shear dispersion controls mixing, the dispersion coefficient can be estimated from a theoretical formula involving velocity measurements …

    uiuc Repository record

  13. Use of numerical simulations to investigate the performance of a virtual acoustic Doppler current profiler in characterizing flow

    Boldt, JustinUniversity of Illinois at Urbana-Champaign2013

    … and temporal sampling strategies of a virtual acoustic Doppler current profiler (ADCP) in characterizing flow fields and mean velocity profiles from stationary and moving platforms. This was accomplished in part using a data set with high temporal and spatial resolution from a direct numerical …

    uiuc Repository record

  14. Hydrodynamic Characterisation and Wave Current Interaction around Dunnet Head in the Pentland Firth with Implications for Marine Energy Generation

    MacDowall, ClareUniversity of the Highlands and Islands2022

    Hydrodynamic Characterisation and Wave-Current Interaction Around Dunnet Head in the Pentland Firth with Implications for Marine Energy Generation<br/>The Pentland Firth in the north of Scotland connects the North Atlantic Ocean to the west with the North Sea to the east. A strong hydraulic …

    uhi-uk Repository record

  15. Scale effects in testing of a monopile support structure submerged in tidal currents.

    Okorie, Oghenevwori PatriciaRobert Gordon University2011

    … key issues motivating the development of Tidal Current Energy (TCE) technology. Small scale model testing of TCE devices is a major challenge facing the technology due to turbulent flow in tidal currents environment and scaling is a fundamental engineering procedure for prototype development and …

    rgu Repository record

  16. Ecosystem impacts of variable recruitment in Antarctic krill investigated with long-term monitoring and archived ADCP backscatter data

    Lohmann, Amanda2023

    … and I use archived backscatter data from an Acoustic Doppler Current Profiler (ADCP) to investigate biotic and abiotic drivers of summer krill distribution along the mid-to-coastal shelf region of the western Antarctic Peninsula.In Chapter 1, my coauthors and I examine the impact of cyclical …

    duke Repository record

  17. A study of flow structures in a two-stage channel using field data, a physical model and numerical modelling

    Gunawan, BudiUniversity of Birmingham2010

    … and numerical modelling of open channel flow. An Acoustic Doppler Current Profiler (ADCP) was used to measure the spatial distribution of velocity in two cross sections of a small meandering river (River Blackwater, Hampshire) during inbank, bankfull and overbank flow conditions. The same reach of …

    birmingham Repository record

  18. The sedimentology and dynamics of mega-dunes, Jamuna river, Bangladesh

    Roden, Julie ElizabethUniversity of Leeds1998

    … sediment transport were investigated using an Acoustic Doppler Current Profiler (ADCP) which measured both the instantaneous three-dimensional velocity structure and the relative suspended sediment concentration for the entire flow column beneath the survey vessel. Dunes are ubiquitous in the …

    whiterose Repository record

  19. Sill Overflow Processes in the Philippine Archipelago

    Tessler, Zachary David2012

    … to the north is through Mindoro Strait. Moored Acoustic Doppler Current Profiler (ADCP), Conductivity, Temperature, Depth (CTD), and lowered ADCP (LADCP) data are used to study the currents and stratification at Panay Sill, at the southern end of Mindoro Strait. We observe a strong …

    columbia-diss Repository record

  20. Investigating the local circulation of the southeast Cape Basin

    Carr, Matthew DavidDepartment of Oceanography2018

    … In this study a combination of in situ Acoustic Doppler Current Profiler (ADCP) data and satellite observations were used to identify, describe and characterise the features driving the local circulation within the southeast Cape Basin. The ADCP data was obtained from the South Atlantic …

    cape-town Repository record

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