JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Abyssal Circulation Driven by a Periodic Impulsive Source in a Small Basin with Steep Bottom Slope with Implications to the East Sea
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Ocean and Polar Research
  • Volume 34, Issue 3,  2012, pp.287-296
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2012.34.3.287
 Title & Authors
Abyssal Circulation Driven by a Periodic Impulsive Source in a Small Basin with Steep Bottom Slope with Implications to the East Sea
Seung, Young-Ho;
  PDF(new window)
 Abstract
In the theory of source-driven abyssal circulation, the forcing is usually assumed to be steady source (deep-water formation). In many cases, however, the deep-water formation occurs instantaneously and it is not clear whether the theory can be applied well in this case. An attempt is made to resolve this problem by using a simple reduced gravity model. The model basin has large depth change compared for its size, like the East Sea, such that isobaths nearly coincide with geostrophic contours. Deep-water is formed every year impulsively and flows into the model basin through the boundary. It is found that the circulation driven by the impulsive source is generally the same as that driven by a steady source except that the former has a seasonal fluctuation associated with unsteadiness of forcing. The magnitudes of both the annual average and seasonal fluctuations increase with the rate of deep-water formation. The problem can be approximated to that of linear diffusion of momentum with boundary flux, which well demonstrates the essential feature of abyssal circulation spun-up by periodic impulsive source. Although the model greatly idealizes the real situation, it suggests that abyssal circulation can be driven by a periodic impulsive source in the East Sea.
 Keywords
East Sea;abyssal circulation;periodic impulsive source;deep-water formation;geostrophic contours;
 Language
English
 Cited by
1.
Simulation of eddy-driven deep circulation in the East/Japan Sea by using a three-layer model with wind, throughflow and deep water formation forcings, Journal of Marine Systems, 2015, 150, 41  crossref(new windwow)
 References
1.
Bleck R, Boudra DB (1981) Initial testing of a numerical ocean circulation model using a hybrid (quasi-isopycnic) vertical coordinate. J Phys Oceanogr 11:755-770 crossref(new window)

2.
Bleck R, Boudra DB (1986) Wind-driven spin-up in eddyresolving ocean models formulated in isopycnic and isobaric coordinates. J Geophys Res 91:7611-7621 crossref(new window)

3.
Carslaw HS, Jaeger JC (1959) Conduction of heat in solids. Oxford Univ Press, London, 510 p

4.
Chang KI, Teague WJ, Lyu SJ, Perkins HT, Lee DK, Watts DR, Kim YB, Mitchell DA, Lee CM, Kim K (2002) Circulation and currents in the southwestern East/Japan Sea: Overview and review. Progr Oceanogr 61:105-156

5.
Chang KI, Kim K, Kim YB, Teague WJ, Lee JC, Lee JH (2009) Deep flow and transport through the Ulleung Interplain Gap in the southwestern East/Japan Sea. Deep- Sea Res I 56:61-72 crossref(new window)

6.
Hogan PJ, Hulbert HE (2000) Impact of upper oceantopographical coupling and isopycnal outcropping in Japan/East Sea models with 1/8 degree to 1/64 degree resolution. J Phys Oceanogr 30:2535-2561 crossref(new window)

7.
Holloway G, Sou T, Eby M (1995) Dynamics of circulation of the Japan Sea. J Mar Res 53:539-569 crossref(new window)

8.
Kawase M (1993) Effects of a concave bottom geometry on the upwelling-driven circulation in an abyssal ocean basin. J Phys Oceanogr 23:400-405 crossref(new window)

9.
Kawase M, Straub D (1991) Spinup of source-driven circulation in an abyssal basin in the presence of bottom topography. J Phys Oceanogr 21:1501-1514 crossref(new window)

10.
Kim KR, Kim G, Kim K, Lobanov V, Ponomarev V, Salyuk A (2002) A sudden-bottom water formation during the severe winter 2000-2001: the case of the East/Japan Sea. Geophys Res Let 29:1234 crossref(new window)

11.
Pedlosky J (1987) Geophysical fluid dynamics, Springer- Verlag, 710 p

12.
Rhines PB, Young WR (1982) A theory of the wind-driven circulation. J Mar Res 40:559-596

13.
Senjyu T, Aramaki T, Otosaka S, Togawa O, Danchenkov M, Karasev E, Volkov Y (2002) Renewal of the bottom water after the winter 2000-2001 may spin-up the thermohaline circulation in the Japan Sea. Geophys Res Lett 29(7):1149, doi:10.1029/2001GL014093 crossref(new window)

14.
Senjyu T, Shin HR, Yoon JH, Nagano Z, An HS, Byun SK, Lee CK (2005) Deep flow field in the Japan/East Sea as deduced from direct current measurements. Deep-Sea Res II 52:1726-1741 crossref(new window)

15.
Seung YH (2005) Abyssal currents driven by a local wind forcing through deep mixed layer: Implication to the East Sea. Ocean Science J 40(2):101-107 crossref(new window)

16.
Seung YH, Yoon JH (1995) Some features of winter convection in the Japan Sea. J Oceangr 51:61-73 crossref(new window)

17.
Stommel H, Arons AB (1960) On the abyssal circulation of the world ocean - I. Stationary flow patterns on a sphere. Deep-Sea Res 6:140-154

18.
Straub DN, Killworth PD, Kawase M (1993) A simple model of mass-driven abyssal circulation over a general bottom topography. J Phys Oceanogr 23:1454-1469 crossref(new window)

19.
Takematsu M, Nagano Z, Ostrovskii AG, Kim K, Volkov Y (1999) Direct measurements of deep currents in the northern Japan Sea. J Oceanogr 55:207-216 crossref(new window)