VM-ADCP measured upper ocean currents in the southeastern Arabian Sea and Equatorial Indian Ocean during December, 2000
View/ Open
Date
2002Author
Murty, V.S.N.
Suryanarayana, A.
Somayajulu, Y.K.
Raikar, V.
Tilvi, V.
Metadata
Show full item recordAbstract
The Vessel-Mounted Acoustic Doppler Current Profiler (VM-ADCP) measured currents in the upper 200 m along the cruise track covering the southeastern Arabian Sea and the Eastern Equatorial Indian Ocean during northern winter monsoon (10-31 December) of 2000 are presented. In the study area, the westward flowing North Equatorial Current is identified at 4 degrees N southeast of Sri Lanka and its northwestward flow into the southeastern Arabian Sea over a wider zonal belt 4 degrees N-7 degrees N west of 80 degrees E. It attains higher speed (more than 50 cm/s) outside the Gulf of Mannar augmented by the strong northeasterly winds blowing over the Gulf. With the eastward flow north of 7 degrees N towards the Gulf, a clockwise eddy (early stage of the Lakshadweep High) is formed off south-southwest coast of India due to local wind forcing. A strong (more than 50 cm/s) eastward flowing North Equatorial Counter Current (NECC) is developed in the zonal belt 0-3 degrees N due to prevalence of the equatorial west wind forcing through December and retroflection of NEC. The transport of the NECC in the upper 100 m varies from 4x10@u6@@ m@u3@@ /s at 83 degrees E to 7x10@u6@@ m@u3@@ /s at 93 degrees E. The data details the structure of the South Equatorial Counter Current south of the equator from 83 degrees E to 93 degrees E.
Collections
- Scholarly literature [8865]
Related items
Showing items related by title, author, creator and subject.
-
Potential feedback mechanism between phytoplankton and upper ocean circulation with oceanic radiative transfer processes influenced by phytoplankton - Numerical ocean, general circulation models and an analytical solution
Nakamoto, S.; Kano, M.; PrasannaKumar, S.; Oberhuber, J.M.; Muneyama, K.; Ueyoshi, K.; Subrahmanyam, B.; Nakata, K.; Lai, C.A.; Frouin, R. (Elsevier, 2006)Because of the diversity of the ecosystem in the earth, modeling of such an ecosystem cannot avoid arguing which ecosystem element should be included or excluded. It is demonstrated that views of thermodynamics ensuring ... -
Bio-physical coupling and ocean dynamics in the central equatorial Indian Ocean during 2006 Indian Ocean Dipole
PrasannaKumar, S.; David, T.D.; Byju, P.; Narvekar, J.; Yoneyama, K.; Nakatani, N.; Ishida, A.; Horii, T.; Masumoto, Y.; Mizuno, K. (American Geophysical Union, 2012)The high-frequency times-series data collected during 28th October to 21st November 2006 onboard R/V Mirai provided the first evidence of short-term bio-physical coupling in the central equatorial Indian Ocean (EIO). The ... -
Imprints of ancient recycled oceanic lithosphere in heterogeneous Indian Ocean mantle: Evidence from petrogenesis of Carlsberg ridge basalts from Northwest Indian Ocean
Saha, A.; Sensarma, S.; Hazra, A.; Ganguly, S.; Peketi, A.; Doley, B.; Mudholkar, A.V. (Elsevier Inc., 2020)This paper reports new petrological, geochemical and isotopic data for Carlsberg Ridge Basalts (CRB) of northwest Indian Ocean and evaluates their petrogenetic aspects in the context of the geochemical and tectonic evolution ...