Dataset: Tank and field turbulence

Name: Velocity measurements from the turbulence generator taken with an Acoustic Doppler Velocimeter on the Friday Harbor dock and laboratory in 2012 (Jellyfish predation in turbulence project)
Published: 2016-07-06
Keywords: oceans

Cite This Dataset

Project:

Influence of organism-scale turbulence on the predatory impacts of a suite of cnidarian medusae (jellyfish predation in turbulence)

Principal Investigator:

Kelly Rakow Sutherland (University of Oregon, OIMB)

Guest:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2016-07-06

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Velocity measurements from the turbulence generator taken with an Acoustic Doppler Velocimeter on the Friday Harbor dock and laboratory in 2012 (Jellyfish predation in turbulence project)

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Description

Related Dataset:
ADV_field

Methods & Sampling

Current velocity measurements were taken from the collection site at the surface using a Vectrino Acoustic Doppler Velocimeter (ADV; Nortek, Oslo, Norway), at depth between 0.5 and 5 m using in situ PIV (Katija and Dabiri, 2008). The ADV measurements were collected at a sampling rate of 100 Hz over 1-5 min intervals.

Data Processing Description

The TKE dissipation rate at the surface was calculated from the ADV-produced velocities in the horizontal, x, direction, u, following (Sanford, 1997) Epsilon(ADV)=(u_rms)3/Z_K where Z is the total water column depth (14 m) and κ is von Karman’s constant (0.4).

BCO-DMO Processing:

- added conventional header with dataset name, PI name, version date
- renamed parameters to BCO-DMO and BODC standards
- combined tank and field tables
- added site column
- reduced digits to right of decimal from 13 to 2
- changed 'betwn 2 and 18 ft. (0.6 and 5 m)' to '0.6-5m'

Data Files

File
tank_field_turb.csv (Comma Separated Values (.csv), 530 bytes) MD5:d51e15cec0cf9213c4471c438af83b80 Primary data file for dataset ID 649971

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1155084

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
FHL_Sutherland		2012-06-01	Friday_Harbor		data info

Instruments

Acoustic Doppler Velocimeter

Supplied Name:

Supplied Description:

ADV; Nortek, Oslo, Norway

Instrument Type

Generic Name: Acoustic Doppler Velocimeter

Acronym: ADV

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/384/

Generic Description:

ADV is the acronym for acoustic doppler velocimeter. The ADV is a remote-sensing, three-dimensional velocity sensor. Its operation is based on the Doppler shift effect. The sensor can be deployed either as a moored instrument or attached to a still structure near the seabed.

Reference:
G. Voulgaris and J. H. Trowbridge, 1998. Evaluation of the Acoustic Doppler Velocimeter (ADV) for Turbulence Measurements. J. Atmos. Oceanic Technol., 15, 272–289. doi: http://dx.doi.org/10.1175/1520-0426(1998)015<0272:EOTADV>2.0.CO;2

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
U_rms	root mean square of velocity	cm/sec	no_bcodmo_term
dissip_rate	dissipation rate of turbulence kinetic energy	m^2/s^3	no_bcodmo_term
site	experimental setting: tank or field	unitless	site
location	location within tank or depth off dock	unitless	no_bcodmo_term

Status message

Database

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Dataset: Tank and field turbulence