Search Results - subject:"Internal waves"

Coupling between internal and surface waves

Craig, Walter; Guyenne, Philippe; Sulem, Catherine - In: Natural Hazards 57 (2011) 3, pp. 617-642

In a fluid system in which two immiscible layers are separated by a sharp free interface, there can be strong coupling between large amplitude nonlinear waves on the interface and waves in the overlying free surface. We study the regime where long waves propagate in the interfacial mode, which...

Persistent link: https://www.econbiz.de/10010995597

Low-frequency internal waves and their influence on transmission loss variability

Kumar, P.; Rao, A.; Anilkumar, K.; Padmanabham, M.; … - In: Natural Hazards 57 (2011) 3, pp. 643-656

Analysis of the time series data collected from a stationary location in the continental shelf of the southeastern Arabian Sea during different month indicated prominent internal wave (IW) activity. Time evolution of temperature, resolved using Morlet wavelet technique, revealed that maximum...

Persistent link: https://www.econbiz.de/10010996008

Impact of internal waves on the acoustic field at a coastal station off Paradeep, east coast of India

Sridevi, B.; Murty, T. Ramana; Sadhuram, Y.; Murty, V. - In: Natural Hazards 57 (2011) 3, pp. 563-576

Internal Wave (IW) characteristics and the impact of IW on acoustic field have been studied utilizing the hourly time series of temperature and salinity data collected at a coastal site off Paradeep (north Bay of Bengal) during 24–25 October 2008. The IW characteristics, viz. period (t <Subscript> per </Subscript>),...</subscript>

Persistent link: https://www.econbiz.de/10010997004

Analytical solutions of long nonlinear internal waves: Part I

Hamdi, Samir; Morse, Brian; Halphen, Bernard; … - In: Natural Hazards 57 (2011) 3, pp. 597-607

specify initial data for the incident waves in internal waves numerical models and for the verification and validation of the …

Persistent link: https://www.econbiz.de/10010846397

Conservation laws and invariants of motion for nonlinear internal waves: part II

Hamdi, Samir; Morse, Brian; Halphen, Bernard; … - In: Natural Hazards 57 (2011) 3, pp. 609-616

. These conserved quantities for internal waves are the momentum, energy, and Hamiltonian. The approach used for the …, and Boussinesq equations. The stability and conservation properties of discrete schemes for the simulations of internal … waves propagation can be assessed and monitored using the analytical expressions of the constants of motion that are derived …

Persistent link: https://www.econbiz.de/10010846663

Space borne SAR observations of oceanic internal waves in North Bay of Bengal

Prasad, K.; Rajasekhar, M. - In: Natural Hazards 57 (2011) 3, pp. 657-667

Sea surface manifestations of internal waves (IW) in the shallow continental shelf waters of North Bay of Bengal have … coastal waters Off Chilka region. In summer waters, prominent short-period shoreward propagating internal waves of consecutive …

Persistent link: https://www.econbiz.de/10010846881

Mixing in the surface layers in association with internal waves during winter in the northwestern Bay of Bengal

Babu, S.; Rao, A. - In: Natural Hazards 57 (2011) 3, pp. 551-562

formation and sustenance of temperature inversions. To investigate the mechanism and the influence of ubiquitous internal waves … applied to study the process in the surface layers in association with the internal waves. The model domain constitutes a …. Internal waves may therefore be perceived in stable layers, essentially from temperature-induced stratification. Despite …

Persistent link: https://www.econbiz.de/10010758806

Impact of stratification on internal waves and differential wearing of thermal inversions on the east coast of India

Rao, A.; Babu, S.; Murty, P.; Pandey, Smita - In: Natural Hazards 57 (2011) 3, pp. 577-595

behavior of internal waves under different stratification scenarios is also addressed. Numerical experiments indicate that the … energy/amplitude of the internal waves are comparable in the surface layers for any stratification, where as it is certain … stratification is found to be more responsible for the generation of internal waves compared to the local stratification. This …

Persistent link: https://www.econbiz.de/10010758988

Free surface, current profile and buoyancy effects upon internal wave energy flux profiles in sill regions

Xing, Jiuxing; Davies, Alan M.; Berntsen, Jarle - In: Mathematics and Computers in Simulation (MATCOM) 80 (2009) 4, pp. 786-793

to internal waves in sill regions. Calculations show that although the linear energy flux term is significant, the … terms are influenced by how the fluctuating velocity due to internal waves is computed. In addition changes in vertical …

Persistent link: https://www.econbiz.de/10010870673

Derivation and comparison of model equations for interfacial capillary-gravity waves in deep water

Kalisch, Henrik - In: Mathematics and Computers in Simulation (MATCOM) 74 (2007) 2, pp. 168-178

A matched asymptotic expansion is used to give a formal derivation of a number of systems of model equations for the evolution of interfacial waves subject to capillarity. For one of these systems, approximate solitary waves are found numerically, and the solutions are compared to the Benjamin...

Persistent link: https://www.econbiz.de/10010870123