CRITICAL FREQUENCIES AT OCEAN BOUNDARIES

被引:75
作者
CLARKE, AJ [1 ]
SHI, C [1 ]
机构
[1] FLORIDA STATE UNIV, INST GEOPHYS FLUID DYNAM, TALLAHASSEE, FL 32306 USA
关键词
D O I
10.1029/91JC00933
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
Past theoretical work has shown that for low-frequency flow at a given ocean boundary location, a critical frequency omega-c exists such that for omega > omega-c unforced motion is trapped to the coast while for omega < omega-c energy leaves the coast. Alternatively, for motion of a given frequency omega on the boundary, there exists a critical latitude such that the motion is trapped to the coast poleward of that latitude but equatorward it is not. This theory is discussed physically for both meridional and nonmeridional boundaries. The simple formula for critical frequency along a nonmeridional boundary is used to document critical periods for the eastern and western Atlantic, Pacific, and Indian Ocean boundaries. The theory occasionally breaks down when boundary curvature is too large.
引用
收藏
页码:10731 / 10738
页数:8
相关论文
共 10 条
[1]   WIND-FORCED LINEAR AND NONLINEAR KELVIN WAVES ALONG AN IRREGULAR COASTLINE [J].
CLARKE, AJ .
JOURNAL OF FLUID MECHANICS, 1977, 83 (NOV) :337-348
[2]  
CLARKE AJ, 1983, J PHYS OCEANOGR, V13, P1193, DOI 10.1175/1520-0485(1983)013<1193:TROEWF>2.0.CO
[3]  
2
[4]   WIND-INDUCED UPWELLING, COASTAL CURRENTS AND SEA-LEVEL CHANGES [J].
GILL, AE ;
CLARKE, AJ .
DEEP-SEA RESEARCH, 1974, 21 (05) :325-345
[5]  
GRIMSHAW R, 1988, J PHYS OCEANOGR, V18, P1124, DOI 10.1175/1520-0485(1988)018<1124:LFBWOC>2.0.CO
[6]  
2
[7]  
MOORE D, 1968, THESIS HARVARD U CAM
[8]  
Moore D. W., 1977, The sea. Ideas and observations on progress in the study of the seas. Vol.6. Marine modeling, P319
[9]  
Pedlosky J., 1987, GEOPHYS FLUID DYN
[10]   BETA-DISPERSION OF LOW-FREQUENCY ROSSBY WAVES [J].
SCHOPF, PS ;
ANDERSON, DLT ;
SMITH, R .
DYNAMICS OF ATMOSPHERES AND OCEANS, 1981, 5 (03) :187-214