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A drifter (not to be confused with a float) is an oceanographic device floating on the surface to investigate ocean currents by tracking location. They can also measure other parameters like sea surface temperature, salinity, barometric pressure, and wave height. [1] Modern drifters are typically tracked by satellite, [2] often GPS.
A rotor current meter (RCM) is a mechanical current meter, an oceanographic device deployed within an oceanographic mooring measuring the flow within the world oceans to learn more about ocean currents. Many RCMs have been replaced by instruments measuring the flow by hydroacoustics, the so-called Acoustic Doppler Current Profilers.
Using Faraday's law of induction (the third of Maxwell's equations), it is possible to evaluate the variability of the averaged horizontal flow by measuring the induced electric currents. The method has a minor vertical weighting effect due to small conductivity changes at different depths. [3] Tilt Current Meter Operating Principle
Easterly winds are producing rough surf and strong rip currents, National Weather Service officials said. Beach hazard advisory for rough surf, rip currents issued for Volusia, Flagler Skip to ...
Both laboratory and field test results show that the VMCM is capable of making accurate measurements of horizontal velocity in the upper ocean. The VMCM is the current standard for making high quality velocity measurements in near-surface regions [2] and it has been used for benchmarking other current meters. [3] [4]
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Bathymetry has various uses including the production of bathymetric charts to guide vessels and identify underwater hazards, the study of marine life near the floor of water bodies, coastline analysis and ocean dynamics, including predicting currents and tides. [4]
In recent years, more functionality has been added to ADCPs (notably wave and turbulence measurements) and systems can be found with 2,3,4,5 or even 9 beams. Further components of an ADCP are an electronic amplifier , a receiver , a clock to measure the traveling time, a temperature sensor , a compass to know the heading, and a pitch/roll ...