Author: Vania K. Jordanova
Publisher: Elsevier
ISBN: 0128155728
Category : Science
Languages : en
Pages : 334
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Book Description
Ring Current Investigations offers a comprehensive description of ring current dynamics in the Earth’s magnetosphere as part of the coupled magnetosphere-ionosphere system. In order to help researchers develop a deeper understanding of the fundamental physics of geomagnetic storms, it includes a detailed description of energetic charged particles injection, trapping, and loss. It reviews historical and recent advances in observations, measurements, theory and simulations of the inner magnetosphere and its coupling to the ionosphere and other surrounding plasma populations. In addition, it compares the physics of ring currents at other strongly magnetized planets in the solar system, specifically Jupiter, Saturn, Uranus and Neptune, with the ring current system at Earth. Providing a description of the most important space weather effects driven by inner magnetospheric energetic particles during geomagnetic storms and present capabilities for their nowcast and forecast, Ring Current Investigations is an important reference for researchers in geophysics and space science, especially related to plasma physics, the ionosphere and magnetosphere, solar-terrestrial relations, and spacecraft anomalies. Includes an appendix with links to downloadable video clips, illustrating features of ring current and geomagnetic storm dynamics Provides overview of existing state-of-the-art numerical models and links for open-source code downloads Offers guidance on how to develop numerical models within the context of the present-day understanding
Author: John Cranston McCarthy
Publisher:
ISBN:
Category :
Languages : en
Pages : 132
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Book Description
Author: William Douglas Cramer
Publisher:
ISBN:
Category :
Languages : en
Pages : 246
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Book Description
The physics of ring current behavior during Coronal Mass Ejection (CME)-driven storms is well understood and can be modeled with moderate accuracy. The effects of Corotating Interaction Region (CIR)-driven storms are less understood and tend to not agree with expected values. Various approaches are employed to examine the differences in ring current behavior during storms driven by these two types of events. Satellite data (Polar CAM-MICE/MICS) are analyzed to determine differences in pitch angle distributions and energy densities, in order to provide insight into how the various ring current enhancement and loss processes differ during the different types of events. A ring current model (the Comprehensive Ring Current Model) is also employed to analyze these differences by modeling ring current behavior during CME and CIR events that fit a typical solar wind profile. No differences in convection were noted in satellite data during CME and CIR-driven storms of similar strength, although oxygen was found to contribute more to the energy during CIRS. However, model results demonstrated that there is a significant difference in ring current response during storms associated with the different drivers. It was determined that particle convection appears to be the primary ring current energization mechanism for CME-driven events, while other factors seem to influence the induced surface magnetic disturbance during CIR-driven storms; possibly boundary conditions, external currents or fluctuations caused by the associated wave-induced oscillations in the solar wind.
Author: H. L. Collin
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Book Description
This study outlines the achievements of the second year of work on data acquired by the Lockheed Ion Mass Spectrometer (IMS-LO), one of the space radiation group of instruments on the Combined Release and Radiation Effects Satellite (CRRES). The purpose of IMS-LO is to study the low energy (110eV-35 keV) ion component of the current plasma. The primary data processing is almost complete, as is the construction of databases of validated low energy ion data. A preliminary version of a static model of low energy ion composition in the ring current has been constructed. This shows the average equatorial energy and pitch-angle distributions of ion fluxes organized by L and local time. Non- equatorial distributions can be obtained by adiabatic mapping. A number of events from both quiet and disturbed times have been selected for special studies. The quiet time convection electric field was estimated using the Liouville's Theorem method. Several events were studied which suggest that induced electric fields can be important in the acceleration and loss of ions.
Author: H. L. Collin
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: National Institute of Justice (U.S.). Technical Working Group on Crime Scene Investigation
Publisher:
ISBN:
Category : Crime scene searches
Languages : en
Pages : 64
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Book Description
This is a guide to recommended practices for crime scene investigation. The guide is presented in five major sections, with sub-sections as noted: (1) Arriving at the Scene: Initial Response/Prioritization of Efforts (receipt of information, safety procedures, emergency care, secure and control persons at the scene, boundaries, turn over control of the scene and brief investigator/s in charge, document actions and observations); (2) Preliminary Documentation and Evaluation of the Scene (scene assessment, "walk-through" and initial documentation); (3) Processing the Scene (team composition, contamination control, documentation and prioritize, collect, preserve, inventory, package, transport, and submit evidence); (4) Completing and Recording the Crime Scene Investigation (establish debriefing team, perform final survey, document the scene); and (5) Crime Scene Equipment (initial responding officers, investigator/evidence technician, evidence collection kits).
Author: Peter W. Greenwood
Publisher: Free Press
ISBN:
Category : Social Science
Languages : en
Pages : 360
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Book Description
Author: Matthew S. Tiscareno
Publisher: Cambridge University Press
ISBN: 1108548288
Category : Science
Languages : en
Pages : 610
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Book Description
Planetary rings are among the most intriguing structures of our solar system and have fascinated generations of astronomers. Collating emerging knowledge in the field, this volume reviews our current understanding of ring systems with reference to the rings of Saturn, Uranus, Neptune, and more. Written by leading experts, the history of ring research and the basics of ring–particle orbits is followed by a review of the known planetary ring systems. All aspects of ring system science are described in detail, including specific dynamical processes, types of structures, thermal properties and their origins, and investigations using computer simulations and laboratory experiments. The concluding chapters discuss the prospects of future missions to planetary rings, the ways in which ring science informs and is informed by the study of other astrophysical disks, and a perspective on the field's future. Researchers of all levels will benefit from this thorough and engaging presentation.
Author: Michael D. Lyman
Publisher:
ISBN: 9780134548685
Category : Criminal investigation
Languages : en
Pages : 0
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Book Description
For courses in Criminal Investigation This text is part of the Justice Series Brief. Affordable. Visual. Criminal Investigation, 3/e, provides an affordable, thought-provoking look at criminal investigations that uses clear writing and eye-catching visuals to get your students straight to the important concepts. By focusing on these core concepts, students will gain true understanding of the material, without becoming overwhelmed with unnecessary information. Lyman presents information that parallels the steps and considerations observed in an actual criminal investigation, blending scientific theories of crime detection with a practical approach to criminal investigation. The book's conversation-starting pedagogy encourages active participation in learning, moving students beyond memorization by engaging them in the latest research findings and current events shaping the field. "
Author: Mark Stenhoff
Publisher: Springer Science & Business Media
ISBN: 0306461501
Category : Science
Languages : en
Pages : 356
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Book Description
Down comes a deluge of sonorous hail, Or prone-descending rain. Wide-rent, the clouds Pour a whole flood, and yet, its flame unquenched, Th’unconquerable lightning struggles through. Ragged and fierce, or in red whirling balls, And fires the mountains with redoubled rage. Black from the stroke, above, the smould’ring pine Stands a sad shattered trunk; and, stretched below, A lifeless group the blasted cattle lie. James Thompson, “The Seasons” (1727) have been investigating ball lightning for more than two decades. I published a ball lightning report in Nature in 1976 that received worldwide publicity and I consequently many people wrote to me with accounts of their own experiences. Within a very short time, I had accumulated about 200 firsthand accounts, and the file has continued to grow steadily since then. Several things impressed me. Few of those who wrote to me had any detailed foreknowledge of ball lightning at the time of their observation. Nonetheless, once reports of other phenomena such as St. Elmo’s fire had been eliminated, the remaining descriptions were remarkably consistent. Furthermore, nearly all who contacted me were keen to have an explanation of what they had seen and seemed entirely sincere.
