K. Rasheed

K. Rasheed
Ministry of Earth Sciences | MoES · Centre for Marine Living Resources and Ecology (CMLRE)

Ph.D
Working on the physical oceanographic processes of Eastern Arabian Sea & Fisheries acoustics

About

22
Publications
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98
Citations
Introduction
Currently working on the physical oceanographic aspects of Eastern Arabian Sea and fisheries acoustics

Publications

Publications (22)
Article
Observational evidence on an anomalous low saline pool due to excess rainfall and runoff during September 2020 in the South Eastern Arabian Sea (SEAS) is explained based on in-situ and satellite/ reanalysis datasets. The study shows the presence of a low saline pool in the coast to offshore section between 10 and 14°N, which is associated with weak...
Article
Dynamic stability (Brunt-Vaisala frequency) has marked control on the formation of deep chlorophyll maximum (DCM) layers when it occurs in shallow euphotic zone. In this work, the monthly timeseries hydrographic data collected during December, 2017 to January, 2019 were used to investigate the relationship between vertical structure of dynamic stab...
Article
Full-text available
The lesser known coastal upwelling in the North Eastern Arabian Sea (NEAS) during summer monsoon, its associated dynamics and forcing mechanisms is elucidated for the first time using basin scale monthly time-series in-situ and satellite data. The presence of cool upwelled waters along northwest coast of India from July to early October with an ass...
Article
Coastal currents consist of wind-driven, tidal, surface wave and geostrophic flows. These currents have a major role for nearshore sediment transport, but the measured data availability on coastal currents for the Indian coast is relatively less. This study analyze the variability of coastal currents along with the tides at nearshore and offshore w...
Article
Full-text available
The paper describes the hydrography and vertical current structure along the shelf edge of South East Arabian Sea (SEAS) during summer and winter monsoons based on current profiles from moving Acoustic Doppler Current Profiler (ADCP). During summer monsoon, SEAS was characterized by upwelling with low saline water at the surface along the southern...
Article
The study was carried out to understand the upwelling and its forcing mechanisms along South Eastern Arabian Sea (SEAS) during the southwest monsoon. Ship observations onboard FORV Sagar Sampada during summer monsoon (August 2017) and satellite data during the period were used to delineate these mechanisms. Here, sea level anomaly (SLA), Ekman tran...
Article
Understanding the forcing mechanisms that determine the coastal ecosystem dynamics has always been a challenging topic of research. The Arabian Sea (AS) coastal ecosystem in the western half of the northern Indian Ocean is influenced by the seasonally reversing atmospheric forcing and structured by distinct water masses along its depth. Although AS...
Article
Present study show the similarity as well as contradictory event among the four different wind data based on monthly, seasonally and annual wind pattern over Indian Ocean. All the four reanalysis wind sources exhibit almost similar trend in their annual as well as monthly average wind pattern, however there is no strong similarity at their peak con...
Article
Study on coastal weather at Vengurla, west coast of India showed considerable seasonal climate variation. Diurnal variation of wind speed along with deviation of coastal breezes is gentle during pre-and post-monsoon periods. Coastal wind during summer monsoon period is dominated by remotely generated monsoon wind. Duration between setup and setdown...
Article
Full-text available
The presence of rhythmic beach cusps in foreshore regions are of persistent research interest to coastal researchers, engineers with respect to their formation in beaches. Morphometric and sediment analysis were used to study beach cusp morphology at Vengurla beach, a gentle slope beach characterized by medium sand. The cusp dimensions such as spac...
Article
Full-text available
Grain size analysis was carried out to understand the behavior of sediment distribution in a pocket beach and to examine the relationship between the sediment distribution on surficial beach sediments with the wave energy and shoreline changes. Three seasons surficial beach sediment were sampled, and statistical characteristics were analyzed for Se...
Article
Estimation of Longshore Sediment Transport Rate (LSTR) in the littoral zone is essential for managing and developing any coastal zone. Numerical models are powerful tool to understand and investigate various processes responsible for LSTR in a systematic manner since direct measurement of LSTR is a difficult task. A one dimensional LITDRIFT model w...
Article
Full-text available
Suspended sediment transport plays a major role in many coastal, estuarine and offshore engineering applications. The transport of suspended sediment influences the constructions of harbours, constructions of coastal power stations and refineries, safety of offshore platforms and pipelines, erosion and accretion of beaches, quality of the water and...
Conference Paper
Full-text available
Sediment transport and estimation of its budget is very essential for dredging operations for Port authorities, policy makers and coastal engineers for smooth marine traffic operations and for the design purposes of any harbor structure like breakwaters or jetties. In order to quantify the suspended sediment transport in Cochin estuary, current spe...
Article
Full-text available
Present study consists the development of salt-silt wedge in the estuarine environment and the identification of the occurrence of turbidity maxima zone(s) during the pre-monsoon season in the southern arm of Cochin estuary. An occurrence of secondary turbidity maxima zone has also been identified. It also consist Concurrent features among various...
Article
The coastal zone acts as a major interface between the ocean and continents. Harbours located in this zone face grave problems from sedimentation, which is a global issue for most of the harbours of the world. Dredging which counter acts sedimentation, brings about innumerable environmental impacts — both positive and negative. As a case study, thi...
Article
Estimation of photosynthetic pigments at the dredged and nondredged sites in the Cochin harbour was carried out from November 1994 to October 1995. The quantitative abundance of microflora at the dredged and nondredged locations were analysed with respect to pigments. The higher concentration of chlorophyll α in the bottom water is indicative of th...
Article
A capital dredging site at Cochin harbour was closely monitored for topographic variability and the role of natural processes in reprieving the scenario. The textural characteristics points out the abundance of silt and clay (76-95%) and sparingly sand; on conduct of capital dredging, the prominence of sand is noteworthy. The bathymetric contours r...
Article
Dredging, while earlier an art, is at present a scientific subject that successfully reflects human skills. This artificial process attempts to win material for beach nourishment, for making roads and railways or for removing settled sediments to facilitate marine transportation. The process, of course, brings about environmental problems in short...

Questions

Question (1)
Question
How can we calculate the residual currents from the time series current data at a point. pl. explain?

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