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The Transient Variation of the Complexes of the Low Latitude Ionos...

By: B. O. Ogunsua; I. A. Fuwape; J. A. Laoye; A. B. Rabiu

Description: Space Physics Laboratory, Department of Physics, Federal University of Technology, Akure, Ondo State, Nigeria. The quest to find an index for proper characterization and description of the dynamical response of the ionosphere to external influences and its various internal irregularities has led to the study of the day to day variations of the chaoticity and dynamical complexity of the ionosphere. This study was conducted using Global Positioning S...

Abdu, M. A.: Major phenomena of the equatorial ionosphere thermosphere system under disturbed conditions, J. Atmos. Sol.-Terr. Phys., 59, 1505–1519, 1997.; Balan, N. and Rao, P. B.: Latitudinal variations of nighttime enhancements in total electron content, J. Geophys. Res., 92, 3436–3440, 1987.; Balan, N., Bailey, G. J., and Balachandian, R. N.: Solar and Magnetic effects on the latitudinal variations of nighttime TEC enhancement, Ann. Geophys., 9, 60–69, 1991.; Balasis...

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How Does the Quality of a Prediction Depend on the Magnitude of th...

By: S. Hallerberg; H. Kantz

Description: Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany. We investigate the predictability of extreme events in time series. The focus of this work is to understand, under which circumstances large events are better predictable than smaller events. Therefore we use a simple prediction algorithm based on precursory structures which are identified via the maximum likelihood principle. Using theses precursory stru...

Jackson, D. J.: Hypothesis testing and earthquake prediction, Proc. Natl. Acad. Sci. USA, 93, 3772–3775, 1996.; Kantz, H., Holstein ,D., Ragwitz, M., and Vitanov, N. K.: Markov chain model for turbulent wind speed data, Physica A, 342, 315–321, 2002.; Kantz, H., Holstein, D., Ragwitz, M., and Vitanov, N. K.: Short time prediction of wind speeds from local measurements, in: Wind Energy–Proceedings of the EUROMECH Colloquium, edited by: Peinke, J., Schaumann, P., and Barth...

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Site Effect Classification Based on Microtremor Data Analysis Usin...

By: P. Afzal; K. Heydarzadeh; A. Adib

Description: Department of Mining Engineering, Faculty of Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran. The aim of this study is to classify the site effect using concentration–area (CA) fractal model in Meybod city, Central Iran, based on microtremor data analysis. Log–log plots of the frequency, amplification and vulnerability index (k-g) indicate a multifractal nature for the parameters in the area. The results obtained ...

Bolviken, B., Stokke, P. R., Feder, J., and Jossang, T.: The fractal nature of geochemical landscapes, J. Geochem. Explor., 43, 91–109, 1992.; Cheng, Q.: Spatial and scaling modelling for geochemical anomaly separation, J. Geochem. Explor., 65, 175–194, 1999.; Afzal, P., Khakzad, A., Moarefvand, P., Rashidnejad Omran, N., Esfan-diari, B., and Fadakar Alghalandis, Y.: Geochemical anomaly separation by multifractal modeling in Kahang (Gor Gor) porphyry system, Central Iran...

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Three-dimensional Magnetic Reconnection Through a Moving Magnetic ...

By: M. G. Linton; V. S. Lukin

Description: Space Science Division, Naval Research Laboratory, Washington, DC 20375, USA. A computational study of three-dimensional magnetic reconnection between two flux ropes through a moving reconnection site is presented. The configuration is considered in the context of two interacting spheromaks constrained by a perfectly conducting cylindrical boundary and oriented to form a single magnetic field null at its center. The initial magnetic field configur...

Aydemir, A. Y.: Nonlinear studies of m=1 modes in high-temperature plasmas, Phys. Fluids B, 4, 3469–3472, 1992.; Bellan, P. M.: Generalization of cylindrical spheromak solution to finite beta and large reversed shear, Phys. Plasmas, 9, 3050–3056, 2002.; Bhattacharjee, A., Germaschewski, K., and Ng, C. S.: Current singularities: drivers of impulsive reconnection, Phys. Plasmas, 12, 042305, 2005.; Birn, J., Drake, J. F., Shay, M. A., Rogers, B. N., Denton, R. E., Hesse, M....

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Fractal Behaviour of the Seismicity in the Southern Iberian Penins...

By: M. D. Martínez; X. Lana; A. M. Posadas; J. A. Canas

Description: Departament de Física i Enginyeria Nuclear, Univ. Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain. The fractal behaviour of the seismicity in the Southern Iberian Peninsula is analysed by considering two different series of data: the distance and the elapsed time between consecutive seismic events recorded by the seismic network of the Andalusian Institute of Geophysics (AIG). The fractal analyses have been repeated by considering four...

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