Observation of deep near-inertial waves using PDS-CPIES in the western Arctic Ocean

Date 2020
Temporal extent 2017-08-15 -2019-09-15
Author(s) Jeon ChanhyungORCID1, Boury SamuelORCID2, Cho Kyoung-Ho3, Park Jae-Hun4, Peacock Thomas1
Affiliation(s) 1 : Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
2 : Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique, F-69342 Lyon, France
3 : Division of Polar Ocean Sciences, Korea Polar Research Institute, Incheon, 21990, Korea
4 : Department of Ocean Sciences, Inha University, Incheon, 22212, Korea
DOI 10.17882/75703
Publisher SEANOE
Keyword(s) Deep near-inertial waves, western Arctic Ocean, PDS-CPIES, stratification
Abstract

Notable spatial and temporal variability of near-inertial waves in the western Arctic Ocean is observed from direct deep current measurements. The deep current is about 50 m above the bottom. The current-meter measures a speed range of 0 to 300 cm/s with direction using an Aanderaa Data Instruments Doppler current sensor. All current data is acquired through pop-up data shuttle (PDS); AES2, AES5, AES6 : 1 year, AES3: 2 year, AES1 and AES4: no available data). After removing the four major semidiurnal tides from the current measurements, a third-order Butterworth phase-preserving band-pass filter with cutoff frequency at 0.9–1.1f is applied to extract NIW signals. Bouyancy frequency (N) is calculated from the CTD data casted from RV Araon and RV Sikuliaq.

Licence CC-BY-NC-ND
Acknowledgements An array of six PDS-CPIES deployments and CTD hydrocasts were conducted by RV Araon and RV Sikuliaq.
Sensor metadata

Current and Pressure Recording Inverted Echo sounder (CPIES) attached with Pop-up data Shuttle (PDS), called PDS-CPIES. The current-meter sensor measures a speed range of 0 to 300 cm/s with direction using an Aanderaa Data Instruments Doppler current sensor. Stratification is obtained from CTD (Conductivity-Temperature-Depth).

Data
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836 KB mat Processed data Access on demand until 2021-12-31
160 KB mat Processed data Access on demand until 2021-12-31
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How to cite 

Jeon Chanhyung, Boury Samuel, Cho Kyoung-Ho, Park Jae-Hun, Peacock Thomas (2020). Observation of deep near-inertial waves using PDS-CPIES in the western Arctic Ocean. SEANOE. https://doi.org/10.17882/75703