نتایج جستجو برای: ocean currents

تعداد نتایج: 113145  

ژورنال: فیزیک زمین و فضا 2018

The rise of satellite altimetry is a revolution in the ocean sciences. Due to its global coverage and its high resolution, altimetry classically outperforms in situ water level measurement. Ekman and geostrophic currents are large parts of the ocean’s current, playing a vital role in global climate variations. According to the classic oceanography, Ekman and geostrophic currents can be calculat...

Journal: :Nature 1872

The Makran Coast (Iranian Coastline of the Oman Sea on the Northern Indian Ocean) plays an important role in country’s future navigation and trade due to its accessibility. In 2014, the Iranian Makran coastline was selected by the PMO to be studied as the Phase 6 in the series of Monitoring and Modelling Studies of Iranian Coasts with all disciplines being in investigated including currents. Al...

ژورنال: اقیانوس شناسی 2019
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Abstract The purpose of this research is to design and identify some of the natures and characteristics of high-resolution surface currents in the Northern Indian Ocean. The pattern of 3D circulation of the Wind-driven surface currents, Sea surface temperature (SST) and Sea Surface Salinity (SSS) distribution in the Northern Indian Ocean using The MIT general circulation model (MITgcm) with ho...

Journal: :Remote Sensing 2017
He Fang Xie Tao William Perrie Li Zhao Jingsong Yang Yijun He

A total of 168 fully polarimetric synthetic-aperture radar (SAR) images are selected together with the buoy measurements of ocean surface wind fields and high-frequency radar measurements of ocean surface currents. Our objective is to investigate the effect of the ocean currents on the retrieved SAR ocean surface wind fields. The results show that, compared to SAR wind fields that are retrieved...

2017
Jordi Isern-Fontanet

The proposed piece of research makes an overview of the status of the retrieval and assimilation of surface ocean currents, being covered in sections 2 and 3 respectively. Section 2 discusses 5 different approaches to estimate ocean currents from satellite derived products such as SST or SSH. The techniques covered are grounded in various areas such ocean dynamics, non-linear physics or image p...

2014
Preeti Rajput Ratheesh Ramakrishnan A. S. Rajawat

Maximum Cross Correlation (MCC) technique have been used to derive coastal currents from sequential OCM derived suspended sediment concentration (SSC) maps and the MCC currents are integrated with the Ocean surface current analysis-Real time (OSCAR) ocean currents along the coastal regions of the Southern India. OSCAR currents are mainly depended on the oceanographic measurements from the satel...

2015
T. Lolla P. J. Haley P. F. J. Lermusiaux

As the concurrent use of multiple autonomous vehicles in ocean missions grows, systematic control for their coordinated operation is becoming a necessity. Many ocean vehicles, especially those used in longer–range missions, possess limited operating speeds and are thus sensitive to ocean currents. Yet, the effect of currents on their trajectories is ignored by many coordination techniques. To a...

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