Advanced SearchSearch Tips
Thorpe Scale Analysis using CTD Observations on the Continental Slope of the Southwestern East Sea
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Ocean and Polar Research
  • Volume 37, Issue 2,  2015, pp.107-117
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2015.37.2.107
 Title & Authors
Thorpe Scale Analysis using CTD Observations on the Continental Slope of the Southwestern East Sea
Seo, Seongbong; Park, Young-Gyu; Park, Jae-Hun; Jeong, Hee-Dong;
  PDF(new window)
Thorpe scale analysis was performed using two sets of 25-hour-long hourly CTD data. Raw density profiles collected on the continental slope of the southwestern East Sea were post-processed to reduce instrument noises and measurement errors. Density inversions were detected by applying the overturn ratio test proposed by Gargett and Garner (2008). The value of below the main thermocline estimated with the Osborn parameterization was and that with the Shih parameterization was during the spring (neap) tidal period. This result suggests that internal tides can enhance vertical mixing in the observation region.
Thorpe scale;vertical diffusivity;East Sea;internal tides;
 Cited by
최아라, 박영규, 민홍식, 김경홍 (2009) 후처리과정을 통한 CTD 관측 자료 품질 개선에 대하여. Ocean Polar Res 31(4):339-347(Choi A-R, Park Y-G, Min HS, Kim K-H (2009) The Improvement of CTD Data through Post Processing. Ocean Polar Res 31(4):339-347) crossref(new window)

Alford M, Pinkel R (2000) Observations of overturning in the thermocline: the context of ocean mixing. J Phys Oceanogr 30:805-832 crossref(new window)

Dilon TM (1982) Vertical overturns: a comparison of Thorpe and Ozmidov length scales. J Phys Oceanogr 87:9601-9613

Galbraith PS, Kelley DE (1996) Identifying overturns in CTD profiles. J Atmos Oceanic Technol 13:688-702 crossref(new window)

Gregg MC (1987) Diapycnal mixing in a thermocline: a review. J Geophys Res 92:5249-5286 crossref(new window)

Gregg MC (1989) Scaling turbulent dissipation in the thermocline, J Geophys Res 94:9686-9698 crossref(new window)

Johnson HL, Garret C (2004) Effects of noise on Thorpe scales and run lengths. J Phys Oceanogr 34(11):2359-2372 crossref(new window)

Kioroglou S, Tragou E, Zervakis V (2013) Assessing shelf mixing using CTD, ADCP, and free falling shear probe turbulence data. Cont Shelf Res 69:73-87 crossref(new window)

Kitade Y, Yoshida J, Matsuyama M (2003) Distribution of overturn induced by internal tides and Thorpe scale in Uchiura Bay. J Oceanogr 59:845-850 crossref(new window)

Lueck RG, Wolk F, Yamazaki H (2002) Oceanic velocity microstructure measurements in the 20th century. J Phys Oceanogr 58(1):153-174 crossref(new window)

Matsuno T, Wolk F (2005) Observations of turbulent energy dissipation rate $\varepsilon$ in the Japan Sea. Deep-Sea Res Pt II 52:1564-1579 crossref(new window)

Morison J, Anderson R, Larson N, D'Asaro E, Boyd T (1994) The correction for thermal-lag effect in sea-bird CTD data. J Atmos Ocean Technol 11:1151-1164 crossref(new window)

Munk WH (1966) Abyssal receipts. Deep-Sea Res 13(4): 707-730

Ozmidov RV (1965) On the turbulent exchange in a stably stratified ocean. Izv Acad Sci USSR, Atmos Oceanic Phys 1:861-871

Park YH, Fuda JL, Durand I, Naveira Garabato AC (2008) Internal tides and vertical mixing over the Kerguelen Plateau. Deep-Sea Res Pt II 55:582-593 crossref(new window)

Park YH, Lee JH, Durand I, Hong CS (2014) Validation of the Thorpe scale-derived vertical diffusivities against microstructure measurements in the Kerguelen region. Biogeosciences 11:6927-6937 crossref(new window)

Peters H, Gregg MC, Sanford TB (1995) On the parameterization of equatorial turbulence: effect of finescale variations below the range of the diurnal cycle. J Geophys Res 100(C9):18333-18348 crossref(new window)

Polzin K, Toole JM, Ledwell JR, Schmitt R (1997) Spatial variability of turbulent mixing in the abyssal ocean. Science 276:93-96 crossref(new window)

Shih LH, Koseff JR, Ivey GN, Ferziger JH (2005) Parameterization of turbulent fluxes and scales using homogeneous sheared stably stratified turbulence simulations. J Fluid Mech 525:193-214 crossref(new window)

Stansfield KC, Garrett C, Dewey R (2001) The probability distribution of the Thorpe displacement within overturns in Juan de Fuca Strait. J Phys Oceanogr 31:3421-3434 crossref(new window)

Thorpe SA (1977) Turbulence and mixing in a Scottish Loch. Philos T Roy Soc A, 286:125-181 crossref(new window)

Timmermans ML, Garrett C, Carmack E (2003) The thermohaline structure and evolution of the deep waters in the Canada Basin, Arctic Ocean. Deep-Sea Res Pt I 50(10-11):1305-1321 crossref(new window)

Yagi M, Yasuda I (2013) A modified method for estimating vertical profiles of turbulent dissipation rate using density inversions in the Kuril Straits. J Oceanogr 69:203-214 crossref(new window)