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A list of all the posts and pages found on the site. For you robots out there is an XML version available for digesting as well.
Pages
Gerassimos' Homepage
About me
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Posts
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Blog Post number 4
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Blog Post number 1
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publications
Arrival‐time perturbations of broadband tomographic signals due to sound‐speed disturbances. A wave‐theoretic approach
G. A. Athanassoulis, E. K. Skarsoulis
Published in The Journal of the Acoustical Society of America, 97(6), 3575-3588, 1995
Analytical dynamics of wave-body interaction
G. A. Athanassoulis
Book chapter: Mathematical Techniques for Water Waves (ed. B. N. Mandal), Advances in Fluid Mechanics, Vol. 8, Computational Mechanics Publications, Chapter 3, 79-154, 1997
A consistent coupled-mode theory for the propagation of small-amplitude water waves over variable bathymetry regions
G. A. Athanassoulis, K. A. Belibassakis
Published in Journal of Fluid Mechanics, 389, 275-301, 1999
Extension of second-order Stokes theory to variable bathymetry
K. A. Belibassakis, G. A. Athanassoulis
Published in Journal of Fluid Mechanics, 464, 35-80, 2002
Exact semi-separation of variables in waveguides with non-planar boundaries [PDF pre-print]
G. A. Athanassoulis, Ch. E. Papoutsellis
Published in Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 473(2201), 20170017, 2017
Implementation of a fully nonlinear Hamiltonian coupled-mode theory, and application to solitary wave problems over bathymetry
Ch. E. Papoutsellis, A. G. Charalampopoulos, G. A. Athanassoulis
Published in European Journal of Mechanics - B/Fluids, 72, 199-224, 2018
A systematic path to non-Markovian dynamics: new response probability density function evolution equations under Gaussian coloured noise excitation [PDF pre-print]
K. I. Mamis, G. A. Athanassoulis, Z. G. Kapelonis
Published in Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 475(2226), 20180837, 2019
Extensions of the Novikov–Furutsu theorem, obtained by using Volterra functional calculus [PDF pre-print]
G. A. Athanassoulis, K. I. Mamis
Published in Physica Scripta, 94(11), 115217, 2019
Strong solutions for the Alber equation and stability of unidirectional wave spectra [PDF pre-print]
A. G. Athanassoulis, G. A. Athanassoulis, M. Ptashnyk, T. Sapsis
Published in Kinetic & Related Models, 13(4), 703-737, 2020
Hamiltonian variational formulation of three-dimensional, rotational free-surface flows, with a moving seabed, in the Eulerian description [PDF]
C. P. Mavroeidis, G. A. Athanassoulis
Published in Fluids, 7(10), 327, 2022
A systematic path to non-Markovian dynamics II: Probabilistic response of nonlinear multidimensional systems to Gaussian colored noise excitation [PDF]
G. A. Athanassoulis, N. P. Nikoletatos-Kekatos, K. I. Mamis
Published in Journal of Statistical Physics, 193(7), 84, 2026
students
Konstantinos G. Politis
Ph.D. Thesis: "Theoretical analysis of the wave-body interaction problem with emphasis on the low-frequency and large time asymptotics", NTUA, Greece, 1990
Current position: Professor, Department of Naval Architecture, School of Engineering, University of West Attica, Greece
Giorgos N. Makrakis
Ph.D. Thesis: "Elastic Wave Propagation in a half plane with a hole", NTUA, Greece, 1992
Current positions: Professor, Department of Mathematics and Applied Mathematics, University of Crete, and Associated Researcher, Institute of Applied and Computational Mathematics, Foundation for Research and Technology – Hellas (FORTH), Greece
Takvor H. Soukissian
Ph.D. Thesis: "Methods of long-term analysis and prediction of sea wave climate", NTUA, Greece, 1995
Current position: Senior Researcher, Hellenic Centre for Marine Research, Greece
Alexandros A. Theodoulidis
Ph.D. Thesis: "Steady free-surface flows around a finite obstacle or an applied pressure system. Linear and non-linear problem", NTUA, Greece, 1995
Current position: Associate Professor, Department of Naval Architecture, School of Engineering, University of West Attica, Greece
Christos N. Stefanakos
Ph.D. Thesis: "Nonstationary stochastic modelling of time series with applications to environmental data", NTUA, Greece, 1999
Current position: Senior Research Scientist, Department of Fisheries and New Biomarine Industry, SINTEF Ocean, Norway
Aristeidis M. Prospathopoulos
Ph.D. Thesis: "Three-dimensional acoustic scattering from axisymmetric obstacles or inclusions in oceanic wave guides", NTUA, Greece, 2000
Current position: Associate Researcher, Hellenic Centre for Marine Research, Greece
Theodoros P. Gerostathis
Ph.D. Thesis: "Wave propagation in the nearshore/coastal environment using models appropriate for parallel processing", NTUA, Greece, 2004
Current position: Professor, Department of Naval Architecture, School of Engineering, University of West Attica, Greece
Panagiotis N. Gavriliadis
Ph.D. Thesis: "Theoretical and numerical exploitation of the moment problem with applications to the probabilistic prediction of stochastic responses of dynamical systems", NTUA, Greece, 2006
Current position: Researcher, National Technical University of Athens, Greece
Konstantinos S. Politis
Ph.D. Thesis: "Modeling and numerical solution of wave propagation problems in the sea by means of wavelets and Gabor frames", NTUA, Greece, 2008
Giorgos D. Gkikas
Ph.D. Thesis: "Nonlinear system modeling and identification of an onshore oscillating water column-wave energy converter, using Volterra series and Hilbert-Huang transform", NTUA, Greece, 2012
Current position: Principal Engineer Hydrodynamics, SBM Offshore, The Netherlands
Sevasti-Ivi C. Tsantili
Ph.D. Thesis: "Two-time response excitation theory for non linear stochastic dynamical systems", NTUA, Greece, 2013
Current position: Assistant Professor, Department of Naval Architecture, School of Engineering, University of West Attica, Greece
Christos E. Papoutsellis
Ph.D. Thesis: "Nonlinear Water Waves over varying bathymetry. Theoretical and numerical study using variational methods", NTUA, Greece, 2016
Current positions: Academic Coordinator, École des Ponts (ENPC), Institut Polytechnique de Paris, and Researcher, Laboratoire d'Hydraulique Saint-Venant, France
Konstantinos I. Mamis
Ph.D. Thesis: "Probabilistic responses of dynamical systems subjected to Gaussian coloured noise excitation. Foundations of a non-Markovian theory", NTUA, Greece, 2020
Current position: Assistant Professor, Department of Mathematics and Statistics, University of Wyoming, USA
Nikolaos P. Nikoletatos-Kekatos
Ph.D. Thesis: "Probabilistic solutions of nonlinear dynamical systems excited by colored Gaussian noise", NTUA, Greece, 2026
students_diploma
Georgios Kossioris
Diploma Thesis: "A function-theoretic approach to a two-dimensional wave-body interaction problem governed by the modified Helmholtz equation", NTUA, Greece, 1986
Current position: Professor, Department of Mathematics and Applied Mathematics, University of Crete, Greece
Peter Vranas
Diploma Thesis: "Excursion analysis and extreme-value analysis for stationary stochastic processes: short– and long–term consideration", NTUA, Greece, 1988
Current position: Professor, Department of Philosophy, University of Wisconsin-Madison, USA
Themistoklis P. Sapsis
Diploma Thesis: "Stochastic Analysis with Applications to Dynamical Systems", NTUA, Greece, 2005
Current position: William I. Koch Professor of Mechanical and Ocean Engineering, and Director of the Center for Ocean Engineering, Department of Mechanical Engineering, Massachusetts Institute of Technology, USA
Kyriakoula N. Kofiani
Diploma Thesis: "Calculus on Functionals and Variational Formulations with Application to Mechanics", NTUA, Greece, 2007
Current position: Engineer, Shell, The Netherlands
Konstantinos I. Mamis
Diploma Thesis: "Modeling and Analysis of Hydro/Piezo/Electric Systems", NTUA, Greece, 2013
Alexis-Tzianni Charalampopoulos
Diploma Thesis: "A Hamiltonian Coupled Mode method for the fully non linear water wave problem", NTUA, Greece, 2016
Current position: Quantitative Researcher, Maven Securities
Nikolaos I. Vasilikis
Diploma Thesis: "Hydrodynamic interaction and power absorption efficiency of wave energy converters in the frequency domain, using the boundary element method", NTUA, Greece, 2016
Current position: Damen Naval, The Netherlands
Athanasios I. Lolos
Diploma Thesis: "First-Passage-Time Problem of differentiable random functions, and applications", NTUA, Greece, 2017
Current position: Principal Data Scientist, Navy Federal Credit Union, USA
Constantinos P. Mavroeidis
Diploma Thesis: "Variational and Asymptotic Methods in the Study of Nonlinear, Free-Surface Waves", NTUA, Greece, 2019
Ilias G. Mavromatis
Diploma Thesis: "Probabilistic description of responses of nonlinear dynamical systems under colored Gaussian excitation", NTUA, Greece, 2020
Current position: Postdoctoral Research Scientist, Department of Civil Engineering and Engineering Mechanics, Columbia University, USA
teaching
Optimization Methods and Variational Principles in Mathematical Physics.
Graduate course, National Technical University of Athens, Greece, Fall, 2020.
Taught (and continuously evolved) since 2003.
Non-Markovian Stochastic Functions. Stochastic Dynamics.
Graduate course, National Technical University of Athens, Greece, Spring, 2020.
Taught (and continuously evolved) since 2014.
Ship Dynamics.
Undergraduate course, National Technical University of Athens, Greece, Spring, 2020.
Taught since 1986.
Theory of Probability and Statistics. Applications in the Sea Environment.
Undergraduate course, National Technical University of Athens, Greece, Fall, 2019.
Taught since 2000.