Benchmark datasets for velocity measurements: Difference between revisions

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These datasets are temporarily in a [https://www.dropbox.com/sh/d24ee49naabfx40/AAAJhyjpsLpHv311Aa1fsRX0a?dl=0|read-only dropbox folder], and will eventually be housed at the BODC center with a DOI.
These datasets are currently located in [https://doi.org/10.5281/zenodo.16798905 Zenodo].
They will eventually be housed at the BODC center.
 


{| class="wikitable"  
{| class="wikitable"  
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! style="width: 12%"| Dataset name
! style="width: 12%"| Dataset name
! Total depth
! Total depth
! Deployment height above bottom
! Deployment distance from boundary
! Background speed
! Background median speed
! <math>\varepsilon</math> range
! <math>\varepsilon</math> range
! Stratification/shear information
! Stratification/shear information
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!  
!  
|-
|-
| Tidal slough
| Tidal Slough ADV
| 2.8
| 2.8
|  0.45
|  0.45
| 0.15-0.2
| 0.15
| 1e-8 to 1e-5
| 1e-7 to 1e-5
| Unstratified, but shear-induced anisotropy
| Unstratified, but shear-induced anisotropy
| Viscous subrange is occasionally resolved. Another ADV at 0.15 m shows wrapping issues.
| Viscous subrange is occasionally resolved. Another ADV at 0.15 m shows wrapping issues.
|-
|-
| Tidal shelf low quality
| Tidal Shelf ADV
| 185
| 250
| 0.4
| 0.4
| <0.3 but usually 0.1
| 0.26
| 1e-7 to 1e-4
| 1e-7 to 1e-4
| Bottom one in log-layer using the classical definition
| Low-quality & noisy dataset
|-
| Tidal shelf high quality
| 250
| 0.4
| <0.65
| 1e-7 to 1e-5
| Stratified bottom log-layer  
| Stratified bottom log-layer  
| High-quality dataset with phase wrapping. It overlaps with an ADCP Signature benchmark.
| High-quality dataset with phase wrapping. It overlaps with an ADCP Signature benchmark.
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| Underice MAVS
| Underice MAVS
| 353
| 353
| 248
| 5
| 0.05
| 0.03
| 1e-8 to 1e-6
| 3e-9 to 7e-8
| Weak stratification
| Weak stratification
| Under-ice boundary layer, MAVS suspended 5m depth
| Under-ice boundary layer, MAVS suspended 5 m beneath the ice
|-
|-
| Tidal MAVS
| Tidal MAVS
| 20
| 20
| 1.45
| 1.45
| 0.9 to 1.1
| 1.1
| 1e-3
| 3e-4 to 1e-3
| Weak stratification
| Weak stratification
| Strong tidal flows
| Strong tidal flows
|-
| Intertidal small waves
| {{FontColor|fg=white|bg=red|text=ask JM}}
| 0.4
|<0.18
| {{FontColor|fg=white|bg=red|text=1e-6}}
| coastal area with weak stratification
| std(U)/mean(U) is roughly 1 (JM)
|}
|}




[[Category:Velocity point-measurements]]
[[Category:Velocity point-measurements]]

Latest revision as of 21:21, 5 May 2026

These datasets are currently located in Zenodo. They will eventually be housed at the BODC center.


Summary of potential benchmark datasets for testing existing and future algorithms
Dataset name Total depth Deployment distance from boundary Background median speed ε range Stratification/shear information Comment
Units [m] [m] [m/s] [W/kg]
Tidal Slough ADV 2.8 0.45 0.15 1e-7 to 1e-5 Unstratified, but shear-induced anisotropy Viscous subrange is occasionally resolved. Another ADV at 0.15 m shows wrapping issues.
Tidal Shelf ADV 250 0.4 0.26 1e-7 to 1e-4 Stratified bottom log-layer High-quality dataset with phase wrapping. It overlaps with an ADCP Signature benchmark.
Underice MAVS 353 5 0.03 3e-9 to 7e-8 Weak stratification Under-ice boundary layer, MAVS suspended 5 m beneath the ice
Tidal MAVS 20 1.45 1.1 3e-4 to 1e-3 Weak stratification Strong tidal flows
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