http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Julio Salcedo (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
-
Cruz-Gómez Raúl,Salcedo-Castro Julio 한국해양과학기술원 2013 Ocean science journal Vol.48 No.2
A theoretical analysis of the principal oceanic ring parameters (tangential and angular velocities, shape function, horizontal and vertical scale of the ring) is described. The theoretical model consists of a reduced gravity model of the lens-like vortices with solid body rotation. The application of this approach is tested by comparison with data from the North Brazil Current Rings Experiment and remote sensing data. Specifically, we used the data corresponding to the surfaceintensified North Brazil Current ring (R-3) surveyed in February-March 1999, using direct velocity and hydrographical measurements. The theoretical model was used for evaluating the geometrical structure of the surface-intensified rings that produce remarkable signals in satellite data. The principal ring parameters from the model were compared with those from satellite data (altimetry and drifter information), which were estimated by using the method of minimization of the multivariable objective functions. Although the proposed model is linear in its conception, a good agreement was observed between the model and the primary characteristics of the observed rings. The model, however, allows for improvement in its assumptions, since its application is rather limited to intense ocean rings.
-
Raúl C. Cruz-Gómez,Julio Salcedo-Castro 한국해양과학기술원 2022 Ocean science journal Vol.57 No.4
The quasi-periodic formation of eddies during retroflection of an initially steady surface current is addressed by experimental modeling and observations. The retroflection process was simulated for various conditions, corresponding to different combinations of a cape angle and surface current speed. The simulations were conducted on a stratified domain under rotation. Results indicate that eddy size and shape, and detaching frequency depend on cape angle, not on upstream speed. Eddies detach at a higher rate for 40∘ and 80∘ cape angles. Other configurations did not show either a regular eddy formation nor detaching. Eddy size was related to the internal Rossby radius of deformation (Rd) as predicted by theory. Current displacement toward the rotation axis in our experiments prior to eddy detachment was from 3.1 to 3.5Rd. Retroflection angle was proportional to detachment T for each cape angle: 6T for 80∘, and 3T for 40∘, where T is the rotation period of the turn table. We conclude that eddy detachment is a result of eddy angular momentum increase from the momentum flux of the steady current. Similarity was analyzed with retroflection present in the North Brazil Current. Eddy vorticity profile and dimensionless quantities related to moving speed and eddy size in the oceanic flow agree with our results.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
