Zahra Ranji

Khaje Nasir Toosi University of Technology | KNTU · Faculty of Civil Engineering

Eight different tide model have been evaluated in this study, concerning several measurements, along Iranian coastline of the Persian Gulf and Gulf of Oman. Comparing results in frequency domain, it’s found that model discrepancies arise where shallow water stations are considered and maximum error belong to the shallowest part of the Gulf, where P...

Winds, waves and storm surges of Gonu and Ashobaa, as two recent cyclones in the Arabian Sea and Gulf of Oman, are simulated by a system of WRF-FVCOM-SWAN. The employed models are separately calibrated using the available data. Surges are found to be highly dependent on coastal geometry and landfall location, rather than the storm intensity. Compar...

Three recent Tropical Cyclones (TCs) over the Arabian Sea, i.e., the super cyclone Gonu, the low intense cyclone Ashobaa, and cyclone Phet (with an unusual track), are studied using a high-resolution atmosphere-wave model and observations. The reliable performances of both atmospheric and wave models were established using the available field measu...

Coastally Trapped Waves (CTWs) are studied along the east and north shelves of the Arabian Sea (AS) through field measurements and numerical modeling. A nondispersive barotropic wave, induced by Cyclone Ashobaa, with periods of 10–14 days propagated in wider parts of the shelf. The phase velocities and CTW amplitudes significantly decreased in narr...

This study investigates some of the uncertainties sources associated with the Pseudo Global Warming (PGW) approach which was employed to project future patterns of tropical cyclones (TCs) over the Arabian Sea (AS). First, the climate variables controlling the patterns of tropical cyclones were extracted from reanalysis datasets of ERA5, ERAI, CFSR,...

A practical method for the calibration of the ocean circulation model is introduced using measured water levels along the Persian Gulf coastlines. Dimensional analysis is employed to present a new Manning formulation as a function of water depth, mean velocity, vegetation, and bed sediment size. The ocean circulation model is configured by applying...

Extensive field measurements along the north coast of the Gulf of Oman are analyzed to study the spectral characteristics of the generated waves of Ashobaa along the path of cyclone. The data showed a maximum significant wave height of about 3.2 meters on Iranian coasts. MLMST algorithm was used to process the directional wave. The measured wave sp...

Tidal waves have very different dynamics in shallow waters, in comparison to deep sea waters. When a tidal wave approaches to nearshore areas, it might be affected by different factors such as resonance, shoaling in landward direction, funneling due to the decrease of the width, damping due to bottom friction, and partial reflection at abrupt chang...

The discharge of Arvand River and tidal currents affect the large siltation at Nahre Ghasr Fishery Port, located at the Nahre Ghasr channel, the Persian Gulf. Using 2DH and 3D numerical models, the flow pattern at the channel was investigated to study the details of siltation problem. The local model was calibrated by the measured data of water sur...