Mohsen Soltanpour

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

Wave-flume laboratory experiments were conducted to study the mechanism of fluidization of partially consolidated mud beds, under wave propagation. The mixture of commercial kaolinite and tap water was allowed to partially consolidate under its self-weight before initiating the progressive wave propagation. The vertical changes in pore water pressu...

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...

A 2D hydrodynamic model is employed to study the characteristics of tidal wave propagation in the Persian Gulf (PG).The study indicates that tidal waves propagate from the Arabian Sea and the Gulf of Oman into the PG through the Strait of Hormuz. The numerical model is first validated using the measured water levels and current speeds around the PG...

The Makran subduction zone (MSZ), located along the southern coasts of Iran and Pakistan, has experienced some deadly earthquakes and tsunamis, including the destructive 1945 Makran tsunami that led to more than 4000 fatalities. In spite of past studies on 1945 Makran tsunami, there are still unresolved problems, particularly on mismatches between...

Sedimentation in ports and waterways covered with fine deposits is a significant challenge in harbor management. The top layer of the bed in such areas typically consists of fluid mud, for which dredging is complicated and less efficient. The goal of this paper is to investigate physical and rheological characteristics of sediment for nautical dept...

Port development in estuaries can have a considerable impact on estuary dynamics, resulting in hydrodynamic changes that alter sediment transport patterns. Understanding these consequences is critical because of socioeconomic importance and high sensitivity of the complex natural systems of estuaries. Babolsar Fishery Port is located at the mouth...

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,...

In the wake of the unprecedented disaster caused by the 2004 and 2011 tsunamis, efforts by the scientific community have highlighted the important role of probabilistic tsunami hazard assessment (PTHA) in tsunami-prone areas. The Makran subduction zone (MSZ) is a hazardous tsunami-prone region; however, due to its low population density, it is not...

A 2D hydrodynamic model is employed to study the characteristics of tidal wave propagation in the Persian Gulf (PG). The study indicates that tidal waves propagate from the Arabian Sea and the Gulf of Oman into the PG through the Strait of Hormuz. The numerical model is first validated using the measured water levels and current speeds around the P...

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...

Artificial Neural Network (ANN) is employed to predict the long-term Caspian Sea level (CSL). 114-year observed CSL data (1900-2014) and the precipitation and temperature of historical and future scenarios of Coupled Model Intercomparison Phase 6 (CMIP6) are used to predict the future fluctuations of CSL (2015-2050). The values of the statistical i...

Cross-shore beach profile data from field measurements performed at six locations on the southern coast of the Caspian Sea are used to investigate bathymetry change due to various wave conditions. Beach profile measurements are analyzed and subsequently compared with the results of a berm formation and erosion model. The model comprises distinct em...

The rapid sedimentation at the entrance of Paresar intake basin is studied, in which unnatural wrack accumulation at the coast, combined with the existing sand, resulted in a major increase in the actual Longshore Sediment Transport (LST) rate. Considering the volume of updrift fillet at the northwest of main breakwater and the estimated LST rate,...

After the 2004 and 2011 tsunamis came unprecedented to the scientific community the role of probabilistic tsunami hazard assessment (PTHA) in tsunami-prone areas came to the fore. The Makran subduction zone (MSZ) is a hazardous tsunami-prone region; however, due to its low population density, it is not as prominent in literature. In this study, we...

This paper aims to evaluate the main role of mangroves forests on the unique hydrodynamic characteristics of the Khuran Strait (KS) in the Persian Gulf. Investigation of hydrodynamic conditions of KS is vital to predict and estimate sedimentation and erosion all over the protected areas north of Qeshm Island. KS (or Tang-e-Khuran) is located betwee...

Although the different aspects of wave-mud interaction have been studied by many researchers, few studies have been conducted on the effect of solitary wave on the particle velocities formed in the layers of cohesive sediments. The main objective of the present study is to investigate different features of the mud mechanical responses to the solita...

The interactions between free surface waves and layers of cohesive sediments including wave height attenuation and mud movement are of great importance in coastal and marine engineering. In this study, the results from a new analytical model were compared with those from literature experimental works and analytical models in terms of wave height di...

Waves-induced siltation and contaminant transport have a great significance to the civil and environmental engineers. Waves-induced mud transport has been investigated theoretically and experimentally in several studies, but very few numerical model developments has been reported in the literature. In this paper, improved incompressible smoothed pa...

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...

A practical numerical model was developed to simulate cross-shore profile evolution at two coastal sites in Iran. The model consists of three sub-models for calculating wave and current, sediment transport, and bed level changes. Validation and calibration of the model was carried out using the measured field data on the north and south coasts of I...

The upper fluid mud layer in muddy environments absorbs wave energy and, in turn, moves due to the wave action. In addition to these two major phenomena of wave-mud interaction, introduction of current in the wave field also changes the wave characteristics as well as the rates of mud mass transport. The present study offers an experimental investi...

The present study aims to improve the accuracy of forecasted wind and wave data generated by a wind-wave forecasting system over the entire Persian Gulf and Strait of Hormuz. A forecasting system has been developed and calibrated for winds and waves in the study area based on available observations. The performance of the developed forecasting syst...

The current study is aimed at getting a further insight into the changes the fouling brings to the Vortex Induced Vibration (VIV) of circular cylinders. Instead of regular patterns considered in previous studies, using the Poisson Cluster Process, an aggregated spatial distribution was considered for the artificial marine fouling. This is believed...

This paper represents the detailed procedure and outcomes of a research work aiming to develop a wave forecasting system for the Persian Gulf. Considering the high importance of the Persian Gulf for the economy of the region and the world, the need for a reliable forecast data has increased recently and therefore we have developed and calibrated th...

Several numerical models have been developed to calculate cross-shore sediment transport and beach profile evolution. Beach profile change in long term is highly related to seasonal variations. In a numerical modeling, accurate simulation of hydrodynamics, sediment transport and morphological changes is necessary for accurate prediction of the beac...

The Persian Gulf is a shallow, semi-enclosed marginal sea with average depth of about 35 m, characterized by significant evaporation which is connected to the Gulf of Oman and the Arabian Sea through the Strait of Hormuz. High evaporation and strong surface heat loss in the Persian Gulf during winter combined with restricted exchange with the op...

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...

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...

Cohesive sediments can be found in many coastal zones all over the world. The upper layer of these muddy coasts may be fluidized under the wave action. Fluid mud is also formed by settlement of fine particles when the waves and currents exert a small shearing stress on the bed. When the waves pass over the fluid mud layer, it absorbs wave energy an...

A case-study pertaining to a number of existing breakwaters located on northern coastlines of the Gulf of Oman, directly facing the Makran Subduction Zone (MSZ) sets the context in order to elucidate the adopted methodologies for both Probabilistic Tsunamis Hazard Analysis (PTHA) as well as investigating breakwater stability in the event of a major...

The Persian Gulf is one the most crowded navigation corridors which hosts a significant portion of world’s energy and cargo transports. Considering the numerous offshore and onshore constructions, drillings and oil and gas platforms in the region, the demand for a reliable met-ocean forecast system has been highly increased in recent years. Thus, P...

‎ Attenuation of wave height while it propagates ‎over muddy beds is a typical phenomenon and is of ‎interest to coastal researchers. The dissipation of ‎waves propagating over muddy beds has been ‎investigated theoretically and experimentally in ‎several studies, but very few numerical model ‎developments for simulation of the wave–mud ‎interactio...

This work is devoted to present the results of an ensemble prediction system developed for the Weather Research and Forecasting (WRF) model to predict surface wind over the Persian Gulf. To construct the ensemble members a combination of perturbed initial condition (using Monte Carlo method) and model perturbations (using multi physical parameteriz...

The waves created in the Arabian Sea by the Gonu tropical cyclone have been simulated in this paper by employing the Simulating Waves Nearshore (SWAN) third-generation spectral wave model. The model was established in a nonstationary mode. The linear and exponential growth from the wind input, the wave–wave nonlinear interaction, the whitecapping,...

An extensive experiment and field measurements show surface waves attenuate significantly at muddy coasts and estuaries. Moreover, strong waves can force the mud particle movements resulting the mass transport of fluid mud layer. One noteworthy element in modelling these phenomena of wave-mud interaction is a description of the rheology of the mud....

The fishermen at Al-Ashkarah Port, located along the Arabian Sea coast of Oman, has suffered from sedimentation at the port entrance in a short interval after its construction. Two different companies in association with their international partners were appointed to study the sedimentation problem at Al-Ashkarah and to evaluate various solutions t...

The dissipation of irregular waves passing over muddy beds is investigated through two series of wave flume laboratory experiments with and without currents, where commercial kaolinite is used as the muddy sediment bed material. The changes in spectral characteristics of waves along the muddy bed and the effects of following and opposing currents a...

In this paper, the large amount of sedimentation and the resultant shoreline advancements at the breakwaters of Beris Fishery Port are studied. A series of numerical modeling of waves, sediment transport, and shoreline changes were conducted to predict the complicated equilibrium shoreline. The outputs show that the nearshore directions of wave com...

Abstract Although tsunami events are not frequent in many water bodies around the world, their danger cannot be ignored because of the destructive forces that they can bring about, causing major losses of life as well as property damage. In the present chapter, a historical survey of tsunamis in the Persian Gulf and Gulf of Oman is presented, inves...

As the first phase of a series of monitoring and modeling studies of Iranian coastal areas, Chabahar Bay, located on the north coast of the Gulf of Oman, was under a comprehensive monitoring and modeling study in 2006-2007. The study included an extensive one-year field measurements program to help understanding the ongoing processes in the bay and...

The effect of a thin fluid mud layer on nearshore two-dimensional wave transformation is studied through numerical modeling and wave basin experiments. The wave basin experiments were conducted on both muddy and fixed beds. A mixture of commercial kaolinite and tap water was used as fluid mud layer, where its rheological viscoelastic parameters wer...

Meanders are one of the typical geomorphological forms that is frequently observed on the southern coasts of Irandue to the availability of environmental conditions. These dynamic and active landforms have strong spatial variations under the influence of the dynamics of the rivers and the gentle slopes of the deltas, in a short period of time. It’s...

Deltas which are results of interaction between sea and land attracted interests of farmers and scientists, historically. Mond delta is one of landforms that located in Northern coasts of the Persian Gulf and in realms of Bushehr province. Different agents affected on formation, development and evolution of this delta, land and marine. In this rese...

This paper discusses the prediction of wind waves using SWAN numerical model with higher accuracy than previous studies. Linear and exponential growth from wind input, depth induced wave breaking, bottom friction, whitecapping, quadruplet (for deep water) and triad wave-wave interaction (for shallow water) have been activated in the simulations. SW...

Hazard assessment is vital to prioritize efforts for establishing standards of tsunami wave attacks.The first step to establish risk mitigation policies are hazard quantification and probability of it occurrence. The result of this study can provide additional insight into tsunami threat and it also provides a robust background to focus on intellig...