A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean

Philip Leadbitter; Rob Hall; Alexander Brearley

doi:10.23919/OCEANS40490.2019.8962818

A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean

Philip Leadbitter, Rob Hall, Alexander Brearley

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

18 Downloads (Pure)

Abstract

A Kongsberg Seaglider with a microstructure package was deployed in the Faroe-Shetland Channel in 2017 as part of the 4th Marine Autonomous Systems in Support of Marine Observations (MASSMO4). Using the FP07 fast thermistor (512 Hz), the standard Seaglider thermistor (0.2 Hz) and potential density calculated from Seaglider conductivity-temperature sail (0.2 Hz) a comparison of the Thorpe Scale method has been made. Through this method turbulent kinetic energy (TKE) dissipation rates are inferred from the length-scale of a turbulent overturn. Comparison of the three physical quantities show that overturns with a comparable length-scale also have a comparable TKE dissipation rate. The range of estimated TKE dissipation rates from the 0.2 Hz data is also comparable to those inferred using the same method applied to potential density calculated from a ship mounted CTD.

Original language	English
Title of host publication	OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019
Place of Publication	Online
Publisher	The Institute of Electrical and Electronics Engineers (IEEE)
Number of pages	6
ISBN (Electronic)	9780578576183
ISBN (Print)	9780578576183
DOIs	https://doi.org/10.23919/OCEANS40490.2019.8962818
Publication status	Published - 20 Jan 2020

Publication series

Name	OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019

Keywords

Seaglider
Thorpe Scale
Ocean Mixing
Autonomous Vehicles
Ocean mixing
Thorpe scale

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.23919/OCEANS40490.2019.8962818

Accepted_ManuscriptAccepted author manuscript, 3.51 MB

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Leadbitter, P., Hall, R., & Brearley, A. (2020). A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean. In OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019 [8962818] (OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019). The Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.23919/OCEANS40490.2019.8962818

Leadbitter, Philip ; Hall, Rob ; Brearley, Alexander. / A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean. OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019. Online : The Institute of Electrical and Electronics Engineers (IEEE), 2020. (OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019).

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abstract = "A Kongsberg Seaglider with a microstructure package was deployed in the Faroe-Shetland Channel in 2017 as part of the 4th Marine Autonomous Systems in Support of Marine Observations (MASSMO4). Using the FP07 fast thermistor (512 Hz), the standard Seaglider thermistor (0.2 Hz) and potential density calculated from Seaglider conductivity-temperature sail (0.2 Hz) a comparison of the Thorpe Scale method has been made. Through this method turbulent kinetic energy (TKE) dissipation rates are inferred from the length-scale of a turbulent overturn. Comparison of the three physical quantities show that overturns with a comparable length-scale also have a comparable TKE dissipation rate. The range of estimated TKE dissipation rates from the 0.2 Hz data is also comparable to those inferred using the same method applied to potential density calculated from a ship mounted CTD.",

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Leadbitter, P, Hall, R & Brearley, A 2020, A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean. in OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019., 8962818, OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019, The Institute of Electrical and Electronics Engineers (IEEE), Online. https://doi.org/10.23919/OCEANS40490.2019.8962818

A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean. / Leadbitter, Philip; Hall, Rob; Brearley, Alexander.

OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019. Online : The Institute of Electrical and Electronics Engineers (IEEE), 2020. 8962818 (OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean

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AU - Hall, Rob

AU - Brearley, Alexander

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Y1 - 2020/1/20

N2 - A Kongsberg Seaglider with a microstructure package was deployed in the Faroe-Shetland Channel in 2017 as part of the 4th Marine Autonomous Systems in Support of Marine Observations (MASSMO4). Using the FP07 fast thermistor (512 Hz), the standard Seaglider thermistor (0.2 Hz) and potential density calculated from Seaglider conductivity-temperature sail (0.2 Hz) a comparison of the Thorpe Scale method has been made. Through this method turbulent kinetic energy (TKE) dissipation rates are inferred from the length-scale of a turbulent overturn. Comparison of the three physical quantities show that overturns with a comparable length-scale also have a comparable TKE dissipation rate. The range of estimated TKE dissipation rates from the 0.2 Hz data is also comparable to those inferred using the same method applied to potential density calculated from a ship mounted CTD.

AB - A Kongsberg Seaglider with a microstructure package was deployed in the Faroe-Shetland Channel in 2017 as part of the 4th Marine Autonomous Systems in Support of Marine Observations (MASSMO4). Using the FP07 fast thermistor (512 Hz), the standard Seaglider thermistor (0.2 Hz) and potential density calculated from Seaglider conductivity-temperature sail (0.2 Hz) a comparison of the Thorpe Scale method has been made. Through this method turbulent kinetic energy (TKE) dissipation rates are inferred from the length-scale of a turbulent overturn. Comparison of the three physical quantities show that overturns with a comparable length-scale also have a comparable TKE dissipation rate. The range of estimated TKE dissipation rates from the 0.2 Hz data is also comparable to those inferred using the same method applied to potential density calculated from a ship mounted CTD.

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Leadbitter P, Hall R, Brearley A. A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean. In OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019. Online: The Institute of Electrical and Electronics Engineers (IEEE). 2020. 8962818. (OCEANS 2019 MTS/IEEE Seattle, OCEANS 2019). doi: 10.23919/OCEANS40490.2019.8962818

A methodology for Thorpe scaling 512 Hz fast thermistor data from buoyancy-driven gliders to estimate turbulent kinetic energy dissipation rate in the ocean

Abstract

Publication series

Keywords

UN SDGs

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Rob Hall

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