Tidal and Residual Circulation in the Gulf of Khambhat and its Surrounding on the West Coast of India

Nayak, R. K.; Salim, M.; Mitra, Debashis; Sridhar, P. N.; Mohanty, P. C.; Dadhwal, V. K.

doi:10.1007/s12524-014-0387-3

Cited by 13 publications

(3 citation statements)

References 17 publications

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“…The coast of gulf is intercepted by several inlets and creeks formed by confluence of major rivers such as Narmada, Tapi, Mahi, Sabarmati, Shetrunji and several other minor rivers. The water depths within the gulf vary from 10m to 30m at the upstream part of the gulf [Nayak et al, 2014]. The most northern parts of GoK are characterized by very large tidal flats that offer great amount of friction to the tidal propagation.…”

Section: Materials and Methods Study Areamentioning

confidence: 99%

Inter-Comparison of Hydrodynamic Models of Gulf of Khambhat

Satheeshkumar

Balaji

2015

The International Journal of Ocean and Climate Systems

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The complex seabed contours and geometry of basin lead to a unique tidal pattern along India's Gulf of Khambhat (GoK). Estimation of tidal levels and associated currents in this basin is challenging due to the amplification of tides and intense current magnitudes. In this study, the finite difference based numerical model, Delft3D-FLOW has been set up. Spatially varying bottom roughness parameters have been used to estimate the tidal levels and currents for the entire basin and the results are compared with an earlier work of Sathish Balaji (2014 and2015) based on an alternative finite element based numerical model, Telemac2D. An inter-comparison of model results shows good agreement with each other and with the field measurements. The tidal levels are observed to vary from 2m to more than 10m in the narrowing portion of the gulf while the maximum current velocity is seen as 3m/s.

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Section: Materials and Methods Study Areamentioning

confidence: 99%

Inter-Comparison of Hydrodynamic Models of Gulf of Khambhat

Satheeshkumar

Balaji

2015

The International Journal of Ocean and Climate Systems

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“…The Gulf is expected to be influenced by large-scale wind-driven circulation [10]. The jet currents in the proximity of the 60 m depth contour are considered to be the coastal ocean boundary, and do not allow the gulf-water to be adverted/flushed out into the open sea directly [11]. The seasonal variability of GoK is due to the seasonality of the main forcing agents-the Arabian Sea at the Gulf's entrance and the monsoon wind regime.…”

Section: Introductionmentioning

confidence: 99%

“…The seasonal variability of GoK is due to the seasonality of the main forcing agents-the Arabian Sea at the Gulf's entrance and the monsoon wind regime. The Gulf is homogeneous and displays a one-layer structure, and currents at deeper depths inside the Gulf follow the same velocity pattern as the surface due to the shallowness of the depths and the high tidal amplitudes [11].…”

Section: Introductionmentioning

confidence: 99%

Circulation in the Gulf of Khambhat—A Lagrangian Perspective

Mitra

Kumar

Naidu

2020

JMSE

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The circulation of the Gulf of Khambhat (GoK) is studied from a Lagrangian point of view using a 2D numerical model. The model-predicted tide elevation and current speed are in agreement with the observations. Seasonal variations of advection of particles are simulated by releasing 237 particles homogeneously distributed over the Gulf. After one month of simulation, no particles escaped from the GoK except a few from the southern GoK during southwest monsoon (June–September), and the advection of particles was at its maximum in the northern part. Residual eddies are present inside the GoK during the northeast (October–January) and southwest monsoon seasons. Gulf circulation is studied with the combined forcing of tide and wind for different tidal conditions, which had noticeable seasonal difference. The maximum simulated current speeds of 3.4 and 2.8 m/s are noticed during southwest monsoon near to Bhavnagar and Dahej respectively, where the tide elevations are maximum indicating that GoK is a tide-dominated system. A seasonal barrier could be found in the southern Gulf, which not only makes the Gulf circulation distinct from that of the Arabian Sea (AS), but also restricts water-mass exchange between the Gulf and AS during ebb condition. As the Gulf is a dump yard for anthropogenic wastes, the present study puts forward an effort to determine the fate of the waste from a hydrodynamic point of view.

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Observed seasonality of M2 and M4 tidal currents in the Gulf of Khambhat using high-frequency radars

Mandal

2024

Ocean Dynamics

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Tidal and Residual Circulation in the Gulf of Khambhat and its Surrounding on the West Coast of India

Cited by 13 publications

References 17 publications

Inter-Comparison of Hydrodynamic Models of Gulf of Khambhat

Inter-Comparison of Hydrodynamic Models of Gulf of Khambhat

Circulation in the Gulf of Khambhat—A Lagrangian Perspective

Observed seasonality of M2 and M4 tidal currents in the Gulf of Khambhat using high-frequency radars

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