Transports through the Straits of Florida

被引:42
作者
Hamilton, P
Larsen, JC
Leaman, KD
Lee, TN
Waddell, E
机构
[1] Sci Applicat Int Corp, Raleigh, NC 27605 USA
[2] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA
[3] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA
关键词
D O I
10.1175/JPO-2688.1
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
Transports were calculated for four sections of the Florida Current from Key West to Jupiter, Florida, using a moored current-meter array and voltages from cross-channel telephone cables at the western and northern ends of the Straits of Florida. In addition, moored arrays were used to estimate transport through the Northwest Providence, Santaren, and Old Bahama Channels that connect the Florida Current to the southwestern part of the North Atlantic Ocean. Transport measurements were obtained for an 11-month period from December 1990 to November 1991. Mean transports of similar to 25 Sv (1 Sv = 10(6) m(3) s(-1)) for the flow across the western ends of the straits, which agree quite well with recent estimates of 23.8 +/- 1 Sv entering the Gulf of Mexico through the Yucatan Channel, were obtained from both the Key West to Havana cable and the moored array. This estimate is about 5 Sv less than the generally accepted transport through the northern end of the straits at 27 degrees N. This difference was partially accounted for by inflows through the side channels with more transport from the Old Bahama than the Northwest Providence Channel. The variability in the southern part of the straits was larger than at 27 degrees N and included large diversions of the Florida Current south of the Cay Sal Bank and into the Santaren Channel that were caused by large meanders of the flow. The variability of transport in the side channels contributed to the variability of the Florida Current and reduces the correlations of the transports at the ends of the straits. Therefore, the well-measured transport at 27 degrees N is not an accurate indicator of the transport of the Loop Current out of the Gulf of Mexico.
引用
收藏
页码:308 / 322
页数:15
相关论文
共 36 条
[1]  
ANDERSON DLT, 1985, J PHYS OCEANOGR, V15, P773, DOI 10.1175/1520-0485(1985)015<0773:STVITF>2.0.CO
[2]  
2
[3]   CURRENT-METER OBSERVATIONS IN THE OLD-BAHAMA CHANNEL [J].
ATKINSON, LP ;
BERGER, T ;
HAMILTON, P ;
WADDELL, E ;
LEAMAN, K ;
LEE, TN .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1995, 100 (C5) :8555-8560
[4]   Deep flows in the Yucatan Channel and their relation to changes in the Loop Current extension [J].
Bunge, L ;
Ochoa, J ;
Badan, A ;
Candela, J ;
Sheinbaum, J .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2002, 107 (C12)
[5]   The influence of loop current perturbations on the formation and evolution of Tortugas eddies in the southern Straits of Florida [J].
Fratantoni, PS ;
Lee, TN ;
Podesta, GP ;
Muller-Karger, F .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1998, 103 (C11) :24759-24779
[6]  
JOHNS WE, 1987, J PHYS OCEANOGR, V17, P1128, DOI 10.1175/1520-0485(1987)017<1128:MATVOT>2.0.CO
[7]  
2
[8]  
Johns WE, 1998, J PHYS OCEANOGR, V28, P103, DOI 10.1175/1520-0485(1998)028<0103:ACAVOT>2.0.CO
[9]  
2
[10]   TRANSPORT AND HEAT-FLUX OF THE FLORIDA CURRENT AT 27-DEGREES-N DERIVED FROM CROSS-STREAM VOLTAGES AND PROFILING DATA - THEORY AND OBSERVATIONS [J].
LARSEN, JC .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1992, 338 (1650) :169-236