World Library  


 
  • Cover Image

Regional and Inter-regional Effects in Evolving Climate Networks :...

By: J. Hlinka; N. Marwan; R. Donner; N. Jajcay; M. Vejmelka; D. Hartman; J. Kurths; M. Paluš

Description: Department of Nonlinear Dynamics and Complex Systems, Institute of Computer Science, Academy of Sciences of the Czech Republic, Pod vodarenskou vezi 2, 182 07 Prague 8, Czech Republic. Complicated systems composed of many interacting subsystems are frequently studied as complex networks. In the simplest approach, a given real-world system is represented by an undirected graph composed of nodes standing for the subsystems and non-oriented unweighted edges ...

Albert, R., Jeong, H., and Barabasi, A. L.: Internet – Diameter of the World Wide Web, Nature, 401, 130–131, 1999.; Arenas, A., Diaz-Guilera, A., Kurths, J., Moreno, Y., and Zhou, C.: Synchronization in complex networks, Phys. Reports, 469, 93–153, 2008.; Barabási, A.-L. and Albert, R.: Emergence of scaling in random network, Science, 286, 509–512, 1999.; Bialonski, S. and Lehnertz, K.: Assortative mixing in functional brain networks during epileptic seizures, Chaos, 23,...

Read More
  • Cover Image

Albedo Parametrization and Reversibility of Sea Ice Decay : Volume...

By: R. Wackerbauer; M. Müller-stoffels

Description: Physics Department, University of Alaska Fairbanks, AK 99775, USA. The Arctic's sea ice cover has been receding rapidly in recent years, and global climate models typically predict a further decline over the next century. It is an open question whether a possible loss of Arctic sea ice is reversible. We study the stability of Arctic model sea ice in a conceptual, two-dimensional energy-based regular network model of the ice-ocean layer that considers AR...

Abbot, D., Silver, M., and Pierrehumbert, R.: Bifurcations leading to summer arctic sea ice loss, J. Geophys. Res., 116, D19120, doi:10.1029/2011JD015653, 2011.; Agarwal, S., Moon, W., and Wettlaufer, J.: Decadal to seasonal variability of Arctic sea ice albedo, Geophys. Res. Lett., 38, L20504, doi:10.1029/2011GL049109, 2011.; Andreas, E., Fairall, C., Guest, P., and Per...

Read More
  • Cover Image

Oscillations in Critical Shearing, Application to Fractures in Gla...

By: A. Pralong

Description: Laboratory of Hydraulics, Hydrology and Glaciology, Swiss Federal Institute of Technology, 8092 Zürich, Switzerland. Many evidences of oscillations accompanying the acceleration of critical systems have been reported. These oscillations are usually related to discrete scale invariance properties of the systems and exhibit a logarithmic periodicity. In this paper we propose another explanation for these oscillations in the case of shearing fracture. U...

Glen, J W.: Experiments on the deformation of ice, J. Glaciol., 2, 111–114, 1952.; Ide, K. and Sornette, D.: Oscillatory finite-time singularities in finance, population and rupture, Physica A-Statistical Mechanics and its Applications, 307, 63–106, 2002.; Kachanov, L M.: Rupture time under creep conditions (trans. from Russian, 1957), Int. J. Fract., 97, xi–xviii, 1999.; Lemaitre, J.: A course on damage mechanics, Springer, Berlin, Germany, second edn., 228 p., 1996.; M...

Read More
  • Cover Image

Lagrangian Transport in a Circular Lake: Effect of Nonlinearity an...

By: T. Sakai; L. G. Redekopp

Description: Department of Aerospace & Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1191, USA. Effects of the second vertical mode and nonlinearity of the background flow field on the Lagrangian transport of particle clouds are studied by employing a wind-forced linear hydrostatic model and a weakly-nonlinear, weakly-nonhydrostatic evolution model. It is confirmed that Kelvin waves primarily advect particles near the basin perimet...

Monismith, S.: Modal response of reservoirs to wind stress, J. Hydraul. Eng., 113, 1290–1306, 1987.; Horn, D. A., Imberger, J., and Ivey, G. N.: The degeneration of large-scale interfacial gravity waves in lakes, J. Fluid Mech., 434, 181–207, 2001.; Csanady, G. T.: Motions in a model Great Lake due to a suddenly imposed wind, J. Geophys. Res., 73, 6435–6447, 1968.; Csanady, G. T.: Response of large stratified lakes to wind, J. Phys. Oceanogr., 2, 3–13, 1972.; Csanady, G....

Read More
  • Cover Image

Magnetic Holes in Plasmas Close to the Mirror Instability : Volume...

By: T. Passot; P. L. Sulem; D. Borgogno

Description: CNRS, Observatoire de la CÔte d'Azur, B.P. 4229, 06304 Nice Cedex 4, France. Non-propagating magnetic hole solutions in anisotropic plasmas near the mirror instability threshold are investigated in numerical simulations of a fluid model that incorporates linear Landau damping and finite Larmor radius corrections calculated in the gyrokinetic approximation. This FLR-Landau fluid model reproduces the subcritical mirror bifurcation recently identified on t...

Baumgärtel, K.: Fluid approach to mirror mode structures, Planetary Space Sc., 49, 1239–1247, 2001.; Baumgärtel, K., Sauer, K., and Dubinin, E.: Towards understanding magnetic holes: Hybrid simulations, Geophys. Res. Lett., 30(14), 1761(1–4),doi:10.1029/2003GL017373, 2003.; Baumgärtel, K., Sauer, K., and Dubinin, E.: Kinetic slow mode-type solitons, Nonlinear Proc. Geophys., 12, 291–298, 2005.; Beer, M. A. and Hammett, G. W.: Toroidal gyrofluid equations for simulations ...

Read More
  • Cover Image

Distinguishing the Effects of Internal and Forced Atmospheric Vari...

By: M. Barreiro; J. I. Deza; C. Masoller

Description: Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Colom 11, 08222, Terrassa, Barcelona, Spain. The fact that the climate on the earth is a highly complex dynamical system is well-known. In the last few decades great deal of effort has been focused on understanding how climate phenomena in one geographical region affects the climate of other regions. Complex networks are a powerful framework for identifying climate interdep...

Straus, D. M. and Shukla, J.: Distinguishing between the SST-forced variability and internal variability in mid latitudes: analysis of observations and GCM simulations, Q. J. Roy. Meteor. Soc., 126, 2323–2350, doi:10.1002/qj.49712656716, 2000.; Ting, M., Kushnir, Y., Seager, R., and Li, C.: Forced and internal twentieth-century SST Trends in the North Atlantic, J. Climate, 22, 1469–1481,

Read More
  • Cover Image

An Attempt to Find Precursors in the Ulf Geomagnetic Data by Means...

By: M. Hayakawa; S. F. Timashev

Description: Department of Electronic Engineering, The University of Electro-Communications, Chofu Tokyo 182-8585, Japan. The flicker noise spectroscopy which is a new phenomenological method for the retrieval of information contained in chaotic time signals, is based on the analysis of recognizable irregularities (pulse, jumps, and discontinuities of derivatives of various order). This method is applied to the ULF (ultra-low-frequency) data observed at Guam in 1992–...

Bak, P., Tang, C., and Wiesenfeld, K.: Self-organized criticality: An explanation of 1/$f $ noise, Phys. Rev. Lett., 59, 381–384, 1987.; Bak, P.: How Nature works (The Science of Self-organized Criticality), Oxford University Press, 201 pp., 1997.; Burlaga, L. F. and Klein, L. W.: Fractal structure of the interplanetary magnetic field, J. Geophys. Res., 91, 347–350, 1986.; Erokin, N. S. and Moiseev, S. S.: General characteristics and development mechanisms of natural cri...

Read More
  • Cover Image

The Use of Artificial Neural Networks to Analyze and Predict Along...

By: K. R. Bryan; G. Coco; B. G. Ruessink; B. Van Maanen

Description: National Institute of Water and Atmospheric Research (NIWA), P.O. Box 11-115, Hamilton, New Zealand. An artificial neural network (ANN) was developed to predict the depth-integrated alongshore suspended sediment transport rate using 4 input variables (water depth, wave height and period, and alongshore velocity). The ANN was trained and validated using a dataset obtained on the intertidal beach of Egmond aan Zee, the Netherlands. Root-mean-square deviati...

Bailard, J. A.: An energetics total load sediment transport model for a plane sloping beach, J. Geophys. Res., 86, 10938–10954, 1981.; Benítez, J. M., Castro, J. L., and Requena, I.: Are artifical neural networks black boxes?, IEEE Transactions on Neural Networks, 8, 1156–1164, 1997.; Bayram, A., Larson, M., Miller, H. C., and Kraus, N. C.: Cross-shore distribution of longshore sediment transport: comparison between predictive formulas and field measurements, Coast. Eng....

Read More
  • Cover Image

Effect of Interchange Instability on Magnetic Reconnection : Volum...

By: W. Lyatsky; M. L. Goldstein

Description: NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt 20771, MD, USA. We present here the results of a study of interacting magnetic fields that involves a force normal to the reconnection layer. In the presence of such force, the reconnection layer becomes unstable to interchange disturbances. The interchange instability results in formation of tongues of heated plasma that leaves the reconnection layer through its wide surface rather than th...

Belcher, J. W. and Davis Jr., L.: Large-amplitude Alfvén waves in the interplanetary medium, 2, J. Geophys. Res., 76, 3534–3563, 1971.; Biskamp, D.: Magnetic Reconnection Via Current Sheets, Phys. Fluids, 29, 1520–1531, 1986.; Birn, J., Drake, J. F., Shay, M. A., Rogers, B. N., Denton, R. E., Hesse, M., Kuznetsova, M., Ma, Z. W., Bhattacharjee, A., Otto, A., and Pritchett, P. L.: Geospace Environmental Modeling (GEM) Magnetic Reconnection Challenge, J. Geophys. Res., 106...

Read More
  • Cover Image

Direct Numerical Simulation of Intermittent Turbulence Under Stabl...

By: P. He; S. Basu

Description: Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina, 27695, USA. In this paper, we simulate intermittent turbulence (also known as bursting events) in stably stratified open-channel flows using direct numerical simulation. Clear signatures of this intriguing phenomenon are observed for a range of stabilities. However, the spatio-temporal characteristics of intermittency are found to be str...

Ansorge, C. and Mellado, J. P.: Global intermittency and collapsing turbulence in the stratified planetary boundary layer, Bound.-Lay. Meteorol., 153, 89–116, 2014.; Armenio, V. and Sarkar, S.: An investigation of stably stratified turbulent channel flow using large-eddy simulation, J. Fluid Mech., 459, 1–42, 2002.; Barnard, J. C.: Intermittent turbulence in the very stable Ekman layer, PhD thesis, University of Washington, Washington, 2000.; Basu, S. and Porté-Agel, F.:...

Read More
  • Cover Image

A New Method for Abrupt Change Detection in Dynamic Structures : V...

By: S. Q. Wan; G. L. Feng; Q. Wu; J. F. Chou; W. P. He

Description: National Climate Center, China Meteorological Administration, Beijing, China. Based on Detrended Fluctuation Analysis (DFA), we propose a new method – Moving Detrended Fluctuation Analysis (MDFA) – to detect abrupt change in dynamic structures. Application of this technique shows that this method may be of use in detecting time-instants of abrupt change in dynamic structures and we even find that the MDFA results almost do not depend on length of subser...

Alexi, M. G., Brook, E. J., and Severinghaus, J. P: Abrupt change in atmospheric methane at the MIS 5b-5a transition, Geophys. Res. Lett., 34, L20703, doi:10.1029/2007GL029799, 2007.; Alley, R. B., Marotzke, J. W., Nordhaus, D., Overpeck, J. T., Peteet, D. M., and Pielke, R. A.: Abrupt climate change, Science, 229, 2005–2010, 2003.; Broecker, W. S.: Does the trigger for abrupt climate change reside in the ocean or in the atmosphere?, Science, 300, 1519–1522, 2003.; Bunde...

Read More
  • Cover Image

Comments and New Results About the Magnetospheric Chaos Hypothesis...

By: D. Diamantidis; M. A. Athanasiu; E. T. Sarris; G. P. Pavlos; A. G. Rigas

Description: Department of Electrical and Computer Engineering, Demokritos University of Thrace, 67100 Xanthi, Greece. In this study we present theoretical concepts and results concerning the hypothesis test of the magnetospheric chaos. For this reason we compare the observational behavior of the magnetospheric system with results obtained by analysing different types of stochastic and deterministic input-output systems. The results of this comparison indicate that ...

Read More
  • Cover Image

Dissipation and Wave-ion Interaction in the Solar Wind: Links Betw...

By: E. Marsch

Description: Max-Planck Institut für Aeronomie, Max-Planck-Str. 2, D-37191 Katlenburg-Lindau, Germany. In this paper we establish links between turbulence dissipation and wave-particle interactions in the solar corona and wind. Based on quasilinear theory, a set of anisotropic, multi-component fluid equations is derived, which describe the wave-particle interactions of ions with Alfvén waves and ion-cyclotron waves or magnetosonic waves propagating along the mean ma...

Read More
  • Cover Image

The Dynamics of Electron and Ion Holes in a Collisionless Plasma :...

By: P. K. Shukla; B. Eliasson

Description: Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany. We present a review of recent analytical and numerical studies of the dynamics of electron and ion holes in a collisionless plasma. The new results are based on the class of analytic solutions which were found by Schamel more than three decades ago, and which here work as initial conditions to numerical simulations of the dynamics o...

Read More
  • Cover Image

Propagation Regimes of Interfacial Solitary Waves in a Three-layer...

By: A. A. Kurkin; E. A. Rouvinskaya; T. Soomere; O. E. Kurkina

Description: Nizhny Novgorod State Technical University n.a. R. Alekseev, Nizhny Novgorod, Russia. Long weakly nonlinear finite-amplitude internal waves in a fluid consisting of three inviscid immiscible layers of arbitrary thickness and constant densities (stable configuration, Boussinesq approximation) bounded by a horizontal rigid bottom from below and by a rigid lid at the surface are described up to the second order of perturbation theory in small paramete...

Apel, J. R., Ostrovsky, L. A., Stepanyants, Y. A., and Lynch, J. F.: Internal solitons in the ocean and their effect on underwater sound, J. Acoust. Soc. Am., 121, 695–722, 2007.; Bogucki, D. J. and Redekopp, L. G.: A mechanism for sediment resuspension by internal solitary waves, Geophys. Res. Lett., 26, 1317–1320, 1999.; Camassa, R., Rusas, P.-O., Saxen, A., and Tiron, R.: Fully nonlinear periodic internal waves in a two-fluid system of finite depth, J. Fluid Mech., 65...

Read More
  • Cover Image

Dual Plane Piv Investigation of Acoustically Excited Jets in a Swi...

By: J. M. Rees; W. B. Zimmerman; G. S. Regunath

Description: Department of Aeronautical and Automotive Engineering, Stewart Miller Building, Loughborough University, Leicestershire LE11 3TU, UK. A novel dual-plane dye laser PIV technique used to analyze helicity and energy dissipation in an unexcited turbulent swirling jet of pressurized cold air has established that regions within the flow field of the jet exhibiting high helicity are correlated with regions of high turbulent kinetic energy dissipation. This PIV ...

André, J. C. and Lesieur, M.: Influence of helicity on the evolution of isotropic turbulence at high Reynolds number, J. Fluid Mech., 81, 187–207, 1977.; Crow, S. C. and Champagne, F. H.: Orderly structure in jet turbulence, J. Fluid Mech., 48, 547–591, 1971.; Drobniak, S. and Klajny, R.: Coherent structures of free acoustically stimulated jet, J. Turbulence, 3, 001, doi:10.1088/1468-5248/3/1/001, 2002.; Khomenko, G...

Read More
  • Cover Image

The Stochastic Multiplicative Cascade Structure of Deterministic N...

By: D. Schertzer; S. Lovejoy; J. Stolle

Description: Physics, McGill University, 3600 University St., Montreal, Que. H3A 2T8, Canada. By direct statistical analysis we show that over almost all their range of scales and to within typically better than ±1%, atmospheric fields obtained from analyses and numerical integrations of atmospheric models have the multifractal structure predicted by multiplicative cascade models. We quantify this for the horizontal wind, temperature, and humidity fields at 5 differ...

Biferale, L.: Shell models of energy cascade turbulence, Annu. Rev. Fluid Mech., 35, 441–468, doi:10.1146/annurev.fluid.35.101101.161122, 2003.; Blender, R. and Fraedrich, K.: Long time memory in global warming simulations, Geophys. Res. Lett., 30, 1769–1772, doi:10.1029/2003GL017666, 2003.; Boer, G. J. and Shepherd, T. G.: Large-scale two-dimensional turbulence in the atmosphere, J. Atmos. Sci., 40, 164–184, 1983.; Buizza, R., Miller, M., and Palmer, T. N.: Stochastic r...

Read More
  • Cover Image

Stochastic Resonance: from Climate to Biology : Volume 17, Issue 5...

By: R. Benzi

Description: Dipartimento di Fisica and INFN, Università di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy. In this lecture, I will review some basic aspects of the mechanism of stochastic resonance, first introduced as a possible mechanism to explain long term climatic variation. Since then, there have been many applications of stochastic resonance in physical and biological systems. I will show that in complex system, stochastic resonance can ...

Alley, R. B., Anandankrishnan, S., and Jung, P.: Stochastic resonance in the North Atlantic, Paleoceanography, 16, 190–198, 2001.; Benzi, R.: Flow Reversal in a Simple Dynamical Model of Turbulence, Phys. Rev. Lett., 95, 024502, doi:10.1103/PhysRevLett.95.024502, 2005.; Benzi, R. and Sutera, A.: Turbulence and Predictability in Geophysical Fluid Dynamics and Climate Dynamics, edited by: Ghil, M., Benzi, R., and Parisi, G., Varenna Summer School LXXXVIII 1983, 1985.; Benz...

Read More
  • Cover Image

Calculation of the Parameter Deflection in a New Theory of the Ear...

By: A. De Paor; E. Burke

Description: Department of Electronic and Electrical Engineering, National University of Ireland, Dublin, Belfield, Dublin 4, Ireland. In a recent paper on the theory of the Earth's magnetic field and key features of Sunspot activity (de Paor, 2001), a central role in the calculation of secular variations of the geomagnetic field was played by a newly-introduced parameter called the deflection (abbreviated def ). In this note, the significance ...

Read More
  • Cover Image

The Effect of a Localized Geothermal Heat Source on Deep Water For...

By: E. Barsy; A. Várai; I. M. Jánosi; M. Vincze

Description: von Kármán Laboratory for Environmental Flows, Eötvös Loránd University, Pázmány P. s. 1/A, 1117 Budapest, Hungary. In a simplified two-dimensional model of a buoyancy-driven overturning circulation, we numerically study the response of the flow to a small localized heat source at the bottom. The flow is driven by differential thermal forcing applied along the top surface boundary. We evaluate the steady state solutions versus the temperature difference ...

Ganachaud, A. and Wunsch, C.: Improved estimates of global ocean circulation, heat transport and mixing from hydrographic data, Nature, 408, 453–457, 2000.; van Aken, H. M.: The Oceanic Thermohaline Circulation: An Introduction, Atmospheric and Oceanographic Sciences Library, 39, 121–151, doi:10.1007/978-0-387-48039-8-7, 2007.; Arakawa, A. and Lamb, V.: Computational design of the basic dynamical processes of the ...

Read More
 
1
|
2
|
3
Records: 1 - 20 of 45 - Pages: 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.