Atle Lohrmann
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Activity overview
Latest activity by Atle Lohrmann-
Atle Lohrmann created an article,
Enhancing the accuracy of current profiles from surface buoy-mounted systems (2018/2019)
This paper and the subsequent one from the CWMTA conference (2019) fully describes the problem of collecting accurate data ADCP from buoys. Includes the problem description, the history of compar...
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Atle Lohrmann created an article,
The Vectron: A pulse coherent acoustic Doppler system for remote turbulence resolving velocity measurements (2015)
The Vectron is a large velocimeter system that was been developed to allow remote measurement ofturbulent velocities at mid-water depth (O 10 m distant from the instrument transducers) to meet the ...
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Atle Lohrmann created an article,
Observing Finescale Oceanic Velocity Structure with an Autonomous Nortek Acoustic Doppler Current Profiler (2018)
Paper describing the use of HR mode with the Signature1000 from a platform that moves with the currents. Goes into details describing the extended HR mode that was developed for the Signature and ...
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Atle Lohrmann created an article,
Subsurface wave measurements taken to new depths (2009)
In this conference contribution, the authors discuss how the SUV method makes it possible to measure wave height and wave direction from a subsurface buoy that moves during the data collection. Inc...
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Atle Lohrmann created an article,
Resolving Transformed Wave Direction near Coastal structures (2005)
This conference contribution talks about how the AWAC can be used to detect wave reflection from breakwaters
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Atle Lohrmann created an article,
A Question of Scale: How Turbulence Around Aerial Roots Shapes the Seabed Morphology in Mangrove Forests of the Mekong Delta (2017)
Detailed description of a large field experiment to study the effect of turbulence on vegetation. The researchers used multiple Vector velocimeters and HR Aquadopp profilers to collect data.
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Atle Lohrmann created an article,
Long-Term Continuous Acoustical Suspended- Sediment Measurements in Rivers – Theory, Application, Bias, and Error (2016)
This USGS report describes a novel method of estimating suspended sediment concentration using multiple acoustic frequencies and differential absorption.
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Atle Lohrmann created an article,
Turbulence: Best practices for measurement of turbulent flows. A guide for the tidal power industry (2015).
A detailed guide for how you can collect relevant velocity data for the evaluation of tidal sites.
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Atle Lohrmann created an article,
High-Resolution Measurements of Turbulent Flow Close to the Sediment–Water Interface Using a Bistatic Acoustic Profiler (2016)
A thorough discussion and comparison between the Vectrino and the Vectrino profiler for data collected near the bottom boundary in a lake.
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Atle Lohrmann created an article,
Absolute velocity estimates from autonomous underwater gliders equipped with Doppler current profilers (2017)
A paper that describes the use of multiple gliders with Nortek AD2CP in use around Equator to study the undercurrent. The authors address the processing technique as well as the oceanographic resu...