Shear probes: Difference between revisions

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TESTING....
== Welcome to the shear probe group! ==
== Turbulence Shear Spectra ==
A discussion of the theoretical and empirical expectations of the spectrum of shear in isotropic turbulence is presented [[here]].


== Flow chart for dissipation estimates using shear probes ==
The shear probe group addresses best practices in obtaining dissipation rate estimates from shear probes using a platform-independent approach. Our recommendations are applicable for measurements from probes attached to e.g., conventional gravity-driven loose-tether vertical profilers, ocean gliders, autonomous underwater vehicles (AUVs), or autonomous self-propelled floats (e.g. SOLO).  
The processing of shear-probe data can be divided into the following five major steps and these steps apply to data collected with any platform or vehicle. There are many sub-steps to these major steps. The major steps are;
 
# Conversion to physical units.
Our "Best practices recommendations for estimating dissipation rates from shear probes" are described in a Methods article in Frontiers in Marine Science: [https://www.frontiersin.org/articles/10.3389/fmars.2024.1334327/full Lueck et al. (2024)]
* [[Determine the speed of profiling]] of the shear-probe through the water.  
 
*  Determine the temperature of the water.  
We compiled a collection of five benchmark datasets described in Scientific Data: [https://www.nature.com/articles/s41597-024-03323-y Fer et al. (2024)]
*  Convert the shear-probe data samples into physical units
 
*  Convert all other signals per the recommendations of the manufacturer of the sensor or instruments that produce these signals.  
== Scope ==
# Profile selection.
 
Before you can process your shear-probe data to derive the rate of dissipation you must select the segment of data that you wish to process. You must make sure that the selection is meaningful and sensible. For example, the shear probe most must be profiling through the water with a speed, direction, and orientation that is fairly stationary. The selection of data can be partially automated by requiring that the kinematics of your instrument achieve certain minimum criteria. The steps to profile selection are as follows.
The shear probe group provides the following:
*    Choose the [[minimum speed]] of profiling.
 
*    Choose the [[direction of the vertical velocity]] of the profiler.
{|class="wikitable" style="margin-left: auto; margin-right: auto; border: none; text-align:center;"
*    Choose the [[minimum depth]].
|[[File:Flowchart symbol.png|180px|link=Flow chart for shear probes|Flow chart for shear probes]]  
*    Choose the [[maximum pitch and roll]] of the profiler.
|[[File:M Rider Glider 1.JPG|250px|link=Dataset requirements for shear probes|Dataset requirements for shear probes]]
*    Choose the [[minimum duration]] over which the [[minimum speed]] through [[maximum pitch and roll]] must be satisfied.
|[[File:MSS ADCP CTD (Schaffer).JPG|250px|link=Benchmark datasets for shear probes|Benchmark datasets for shear probes]]
# Choosing the processing parameters.
|-
# Dissipation rate estimation.
|[[Flow chart for shear probes|Flow chart for <br>data processing]]
# Applying quality-control metrics.
|[[Dataset requirements for shear probes | Dataset requirements <br>and format description]]
|[[Benchmark datasets for shear probes | Benchmark <br>datasets]]
|}
 
[[Category: Shear probes]]
 
-----
Return [[Main Page]]

Latest revision as of 14:53, 6 June 2024

Welcome to the shear probe group!

The shear probe group addresses best practices in obtaining dissipation rate estimates from shear probes using a platform-independent approach. Our recommendations are applicable for measurements from probes attached to e.g., conventional gravity-driven loose-tether vertical profilers, ocean gliders, autonomous underwater vehicles (AUVs), or autonomous self-propelled floats (e.g. SOLO).

Our "Best practices recommendations for estimating dissipation rates from shear probes" are described in a Methods article in Frontiers in Marine Science: Lueck et al. (2024)

We compiled a collection of five benchmark datasets described in Scientific Data: Fer et al. (2024)

Scope

The shear probe group provides the following:

Flow chart for shear probes Dataset requirements for shear probes Benchmark datasets for shear probes
Flow chart for
data processing 		Dataset requirements
and format description 		Benchmark
datasets

Return Main Page

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