Alfvén Waves and Static Fields in Magnetosphere/ionosphere Coupling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Alfvén Waves and Static Fields in Magnetosphere/ionosphere Coupling write by David J. Knudsen. This book was released on 1990. Alfvén Waves and Static Fields in Magnetosphere/ionosphere Coupling available in PDF, EPUB and Kindle. Perturbation electric and magnetic fields carry in excess of 10(exp10) to 10(exp12) W of electrical power between the magnetosphere and high-latitude ionosphere. Most of this power is generated by the solar wind. The ionosphere at large spatial and temporal scales acts as a dissipative slab which can be characterized by its height-integrated Pedersen conductivity sigma p, so that the power flux into the ionosphere due to a quasi-static electric field E is given by sigma (pE2) The energy transferred to the ionosphere by time-varying electromagnetic fields in the form of Alfven waves is more difficult to calculate because density and conductivity gradients can reflect energy. Thus, field resonances and standing wave patterns affect the magnitude and altitude distribution of electrical energy dissipation. We use a numerical model to calculate the frequency-dependent electric field reflection coefficient of the ionosphere and show that the ionosphere does not behave as a simple resistive slab for electric field time scales less than a few seconds. Time variation of spacecraft-measured high-latitude electric and perturbation magnetic fields is difficult to distinguish from spatial structuring that has been Doppler-shifted to a non-zero frequency in the spacecraft frame. However, by calculating the frequency-dependent amplitude and phase relations between fluctuating electric and magnetic fields we are able to show that low frequency fields (
Magnetosphere-Ionosphere Coupling
Magnetosphere-Ionosphere Coupling - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Magnetosphere-Ionosphere Coupling write by Y. Kamide. This book was released on 2012-12-06. Magnetosphere-Ionosphere Coupling available in PDF, EPUB and Kindle. In the past two decades a succession of direct observations by satellites, and of extensive computer simulations, has led to the realization that the polar ionosphere plays a principal role in large-scale magnetospheric processes - a manifestation of the physics linkage involved in solar-terrestrial interactions. Spatial/temporal variations in high-latitude electromagnetic phenomena, such as dynamic aurorae, electric fields and currents, have proved to be extremely complex. Now the challenge is to comprehend the vast amount of complicated measurements made in this magnetosphere-ionosphere sysstem of the Earth. This book addresses the electrical coupling between the hot, but dilute, magnetospheric plasma and the cold, but dense, plasma in the ionosphere. In five major chapters, this book presents: - basic properties of magnetosphere-ionosphere coupling; - morphology of electric fields and currents at high latitudes; - global modeling of magnetosphere-ionosphere coupling; - modeling of ionospheric electrodynamics; - current issues, such as auroral particle acceleration, substorms, penetration of high-latitude fields into low latitudes.
Scientific and Technical Aerospace Reports
Scientific and Technical Aerospace Reports - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Scientific and Technical Aerospace Reports write by . This book was released on 1995. Scientific and Technical Aerospace Reports available in PDF, EPUB and Kindle.
Alfvén Waves Across Heliophysics
Alfvén Waves Across Heliophysics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Alfvén Waves Across Heliophysics write by Andreas Keiling. This book was released on 2024-04-02. Alfvén Waves Across Heliophysics available in PDF, EPUB and Kindle. Alfvén Waves Across Heliophysics Progress, Challenges, and Opportunities Alfvén waves are fundamental to the dynamics of space plasmas. Recent advances in our knowledge about Alfvén waves have come from several directions, including new space missions to unexplored heliospheric regions, sophisticated rocket campaigns in the auroral zone, enlarged magnetometer arrays and radar networks, and significant advances in computer modeling. Alfvén Waves Across Heliophysics: Progress, Challenges, and Opportunities is an interdisciplinary collaboration from different space science communities to review recent and current Alfvén wave research. Volume highlights include: Alfvén waves in the solar atmosphere Alfvén waves at the giant planets Alfvén waves at Mars Alfvén waves in moon-magnetosphere systems Alfvén waves in geospace Alfvén waves in the laboratory The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Turbulent Coupling of the Magnetosphere-ionosphere Through Shear- Mode Alfvén Waves
Turbulent Coupling of the Magnetosphere-ionosphere Through Shear- Mode Alfvén Waves - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Turbulent Coupling of the Magnetosphere-ionosphere Through Shear- Mode Alfvén Waves write by John Clarence Grieger. This book was released on 1993. Turbulent Coupling of the Magnetosphere-ionosphere Through Shear- Mode Alfvén Waves available in PDF, EPUB and Kindle.
