Browsing by Author "Samiksha, S.V."
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Attenuation of Wave Energy Due to Mangrove Vegetation off Mumbai, India
Samiksha, S.V.; Vethamony, P.; Bhaskaran, P.K.; Pednekar, P.; Jishad, M.; James, R.A. (2019)Coastal regions of India are prone to sea level rise, cyclones, storm surges, and human-induced activities, resulting in flood, erosion, and inundation, and some of these impacts could be attributed to climate change. ... -
Coastal circulation off Ratnagiri, west coast of India during monsoon seasons: a numerical model study.
Samiksha, S.V.; Sharif, J.; Vethamony, P. (CSIR-NISCAIR, 2014)Present study is the coastal circulation modelling off Ratnagiri under the influence of winds and tides. A two-dimensional hydrodynamic model MIKE 21HD has been used to simulate tides and currents, and model results are ... -
Evaluation of wave growth and bottom friction parameterization schemes in the SWAN based on wave modelling for the central west coast of India
Samiksha, S.V.; Jancy, L.; Sudheesh, K.; SanilKumar, V.; Shanas, P.R. (Elsevier, 2021)In the present study, SWAN wave model is nested with Wavewatch 3 to reproduce waves off the central west coast of India using ERA-5 winds. The sensitivity of SWAN wave model was tested with different wave growth and bottom ... -
Formation Mechanism of Mud Bank Along the Southwest Coast of India
Muraleedharan, K.R.; DineshKumar, P.K.; PrasannaKumar, S.; John, S.; Srijith, B.; Anil Kumar, K.; Naveen Kumar, K.; Gautham, S.; Samiksha, S.V. (Springer, 2018)Mud bank formation during the southwest monsoon along the southwest coast of India remains an enigma to the researchers and coastal community in spite of several earlier studies. The present study attempts to unravel the ... -
Impact of shamal winds and swells on the coastal currents along the west coast of India
Samiksha, S.V.; VinodKumar, K.; Vethamony, P. (CSIR-NISCAIR, 2014)Wind, wave and current data collected at/off Ratnagiri, west coast of India were analysed to study the wind-wave-current interaction along the west coast of India (WCI) during shamal events Shamal winds which originate in ... -
Long-Term Variability of the Wind Field over the Indian Ocean Based on ERA-Interim Reanalysis
Rashmi, R.; Polnikov, V.; Pogarskii, F.; Gomorev, I.; Samiksha, S.V.; Vethamony, P. (Taylor & Francis, 2016)A detailed study of long-term variability of winds using 30 years of data from the European Centre for Medium-range Weather Forecasts global reanalysis (ERA-Interim) over the Indian Ocean has been carried out by partitioning ... -
Magnetic tracing of sediment dynamics of mudbanks off southwest coast of India
Badesab, F.K.; Gaikwad, V.; Gireeshkumar, T.R.; Naikgaonkar, O.; Deenadayalan, K.; Samiksha, S.V.; DineshKumar, P.K.; Loveson, V.J.; Iyer, S.D.; Khan, A.; Udayakrishnan, P.B.; Sardar, A.A. (Springer Berlin Heidelberg, 2018)In this study, we utilized environmental magnetic in combination with sedimentological and hydrodynamic data to investigate the formative processes of mudbanks along southwest coast of India. We document the linkages between ... -
Modification of wind-wave model WAM and its verification against buoy data in the Indian Ocean
Polnikov, V.G.; Samiksha, S.V.; Rashmi, R.; Pogarskii, F.; Sudheesh, K.; Vethamony, P. (IIT Bombay, 2012)An attempt is made to improve the accuracy of wave prediction in the Indian Ocean. For this purpose, two versions of the wave model WAM have been used: WAM (Cycle 4) and the new version of WAM, called NewWAM. The three ... -
Numerical simulations of barnacle larval dispersion coupled with field observations on larval abundance, settlement and recruitment in a tropical monsoon influenced coastal marine environment
Gaonkar, C.A.; Samiksha, S.V.; George, G.; Aboobacker, V.M.; Vethamony, P.; Anil, A.C. (Elsevier, 2012)Observations were carried out to monitor the larval abundance, settlement and recruitment of barnacles on a regular basis for a period of two years. The results were then compared with the numerical modelling studies carried ... -
Performance of ERA5 winds on computed storm surge and wave-current interaction using a coupled model during Ockhi cyclone
Samiksha, S.V.; Tharani, A.; SanilKumar, V.; Antony, C. (Springer, 2023)A fully coupled numerical model was setup to simulate tides as well as storm surges and waves generated by the very severe cyclonic storm Ockhi, which occurred in the Arabian Sea during 29 November-6 December 2017. ERA5 ... -
Propagation of Atlantic Ocean swells in the north Indian Ocean: A case study
Samiksha, S.V.; Vethamony, P.; Aboobacker, V.M.; Rashmi, R. (European Geosciences Union, 2012)An analysis of altimeter significant wave height data of May 2007 revealed the occurrence of an extreme weather event off southern tip of South Africa in the Atlantic Ocean, and generation of a series of very high swells ... -
Recent studies on wind seas and swells in the Indian Ocean
Vethamony, P.; Rashmi, R.; Samiksha, S.V.; Aboobacker, V.M. (IIT Bombay, 2012)Winds and waves measured at a few locations along the west coast of India were analysed to study the wave characteristics in the deep as well as near shore regions during different seasons. The potential generation of ... -
Recent studies on wind seas and swells in the Indian Ocean: A review
Vethamony, P.; Rashmi, R.; Samiksha, S.V.; Aboobacker, V.M. (SAGE Publications, 2013)Winds and waves measured at a few locations along the west coast of India were analysed to study the wave characteristics in the deep as well as near shore regions during different seasons The potential generation of swells ... -
Role of shamal and easterly winds on the wave characteristics off Qatar, central Arabian Gulf
Aboobacker, V.M.; Samiksha, S.V.; Veerasingam, S.; Al-Ansari, E.M.A.S.; Vethamony, P. (Elsevier, 2021)Waves in the Arabian Gulf (Gulf) are dominated by shamal winds during winter and early summer. Although wave characteristics in the Gulf are broadly studied, features associated with various wind systems are not explicitly ... -
Sea breeze-induced wind sea growth in the central west coast of India.
Aboobacker, V.M.; Seemanth, M.; Samiksha, S.V.; Sudheesh, K.; Kerkar, J.; Vethamony, P. (Elsevier, 2014)Fine resolution wind data is required in wave models to study the interaction between wind seas generated by coastal winds, and swells. In the present study, a mesoscale model, MM5, which is capable of reproducing fine ... -
Source investigation of the tar balls deposited along the Gujarat coast, India, using chemical fingerprinting and transport modeling techniques
Suneel, V.; Vethamony, P.; Naik, B.G.; VinodKumar, K.; Sreenu, L.; Samiksha, S.V.; Tai,Y.; Sudheesh, K. (American Chemical Society, 2014)Deposition of tar balls (TBs) along the south Gujarat coast, situated on the west coast of India (WCI), commonly occurs during the southwest monsoon season. Several offshore oil fields off the Mumbai-Gujarat coast, and ... -
Spectral analysis of wind field in the Indian Ocean
Rashmi, R.; Samiksha, S.V.; Polnikov, V.; Pogarskii, F.; Sudheesh, K.; Vethamony, P. (CSIR-NISCAIR, 2014)To study the variability in wind fields over the Indian Ocean, we used ERA INTERIM daily winds for the period 1979-2012 In order to analyse the temporal variation of wind field, we partitioned the whole Indian Ocean into ... -
Suspended matter and fluid mud off Alleppey, southwest coast of India
Shynu, R.; Rao, V.P.; Samiksha, S.V.; Vethamony, P.; Naqvi, S.W.A.; Kessarkar, P.M.; Babu, M.T.; DineshKumar, P.K. (Elsevier, 2017)Time series measurements on suspended particulate matter (SPM) were made at one non-mud bank (M1) and two mud bank stations (M2 and M3) off Alleppey, south west coast of India. The mean SPM was low in surface (6.2 mg/l) ... -
Tide-surge interaction at the head of the Bay of Bengal during Cyclone Aila
Antony, C.; Unnikrishnan, A.S.; Krien, Y.; Murty, P.L.N.; Samiksha, S.V.; Islam, A.K.M.S. (Elsevier B.V., 2020)Tide-surge interaction serves a critical role in shallow coastal regions in modifying the characteristics of peak water levels during storm events. In the present study, we investigated the tide-surge interaction in the ... -
Verification of model wave heights with long-term moored buoy data: Application to wave field over the Indian Ocean
Samiksha, S.V.; Polnikov, V.G.; Vethamony, P.; Rashmi, R.; Pogarskii, F.; Sudheesh, K. (Elsevier, 2015)This paper describes the results obtained using a modified version (ModWAM) of the global wave model WAM, in which new parameterizations have been applied based on the seasonal changes and extreme weather events that have ...