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  • 1
    Publication Date: 2016-08-16
    Print ISSN: 0035-7529
    Electronic ISSN: 1940-1191
    Topics: Geosciences
    Published by Taylor & Francis
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  • 2
    Publication Date: 2014-08-15
    Print ISSN: 0035-7529
    Electronic ISSN: 1940-1191
    Topics: Geosciences
    Published by Taylor & Francis
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  • 3
    Publication Date: 2013-11-01
    Print ISSN: 0035-7529
    Electronic ISSN: 1940-1191
    Topics: Geosciences
    Published by Taylor & Francis
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  • 4
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    In:  Other Sources
    Publication Date: 2019-07-18
    Description: Conjugate studies of high-latitude geomagnetic activity are central to understanding the (truly) global magnetospheric response to external perturbations, i.e. the solar wind, and the role of the ionosphere in modulating and coupling with the magnetosphere. Interhemispheric asymmetries as manifested in auroral emissions have been observed for over 40 years. Unfortunately, the nature of the problem has limited the type and extent of studies that can be performed to either conjugate ground based observations or comparison of space based images with all-sky cameras. Recently Frank and Sigwarth (2002) published results using unique simultaneous images from Polar of the northern and southern aurora, but these are necessarily limited to the nighttime and at oblique angles. However, conjunctive images made with the cameras from the Polar and IMAGE missions contain simultaneous conjugate images of the large-scale aurora under many and varying conditions. This rich data set provides an opportunity to study interhemispheric auroral asymmetries and investigate their occurrence as a function of solar wind conditions and ionospheric parameters such as conductivity. In order to use images of different scenes from each of these cameras, knowledge of their relative response is required. To that end, this paper will present preliminary results of comparing the images with emphasis on data from the Polar UVI LBH filters and the IMAGE FUV WIC.
    Keywords: Geophysics
    Type: Fall American Geophysical Union Meeting; Dec 08, 2003 - Dec 12, 2003; San Francisco, CA; United States
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  • 5
    Publication Date: 2019-07-18
    Description: The Living With a Star Geospace Investigations is established to effectively address those phenomena the Geospace environment that directly affect life and society. The priority science questions focus on two broad areas: (1) ionospheric variability, especially at mid-latitudes, that affects navigation and communications and (2) the source, acceleration mechanisms, and sinks of the radiation belts that degrade satellite lifetimes, produce surface charging, and threaten manned space flight. Candidate missions to address these science foci will be presented as well as possible additional investigations and experiments that would enable an understanding of the Geospace at the system level.
    Keywords: Geophysics
    Type: 4th Oersted International Workshop; Sep 23, 2002 - Sep 27, 2002; Copenhagen; Denmark
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  • 6
    Publication Date: 2019-07-18
    Description: The more ways we probe the ionosphere and inner magnetosphere, the better we can understand their interaction. For example, the multifaceted imaging of geospace with the IMAGE mission complements the more traditional in situ measurements made with many previous missions. Together they have enabled new knowledge of the ionosphere-magnetosphere (IM) coupling. The role of imaging the aurora in understanding this interaction has received renewed attention recently. Based on in situ data, such as FAST or DMSP, and our recent theories, we believe that imaging multiscale features of the aurora is a key component to gaining insight into the processes and mechanisms at work. This talk will explore how auroral imaging can be used to provide improved insight of the dynamics of IM interaction on micro and meso scales, with an emphasis on the current limitations and future possibilities of quantitative analyses.
    Keywords: Geophysics
    Type: 30th Anniversary Yosemite Workshop Inner Magnetosphere Interactions; Feb 06, 2004; Yosemite, CA; United States
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  • 7
    Publication Date: 2019-07-13
    Description: The National Aeronautics and Space Administration (NASA) is launching a bold and ambitious new space initiative. A significant part of this new initiative includes exploration of new worlds, the development of more innovative technologies, and expansion our presence in the solar system. A common theme to this initiative is the exploration of space beyond Low Earth Orbit (LEO). As currently organized, NASA does not have an Agency-level office that provides coordination of space environment research and development. This has contributed to the formation of a gap between spaceflight environments knowledge and the application of this knowledge for multi-program use. This paper outlines a concept to establish a NASA-level Applied Spaceflight Environments (ASE) office that will provide coordination and funding for sustained multi-program support in three technical areas that have demonstrated these needs through customer requests. These technical areas are natural environments characterization and modeling, materials and systems analysis and test, and operational space environments modeling and prediction. This paper will establish the need for the ASE, discuss a concept for organizational structure and outline the scope in the three technical areas
    Keywords: Lunar and Planetary Science and Exploration
    Type: M10-0830 , SPIE; Aug 01, 2010 - Aug 05, 2010; San Diego, CA; United States
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  • 8
    Publication Date: 2019-07-13
    Description: Heliophysics is the science that includes all aspects of the research needed to understand the Sun and its effects on the Earth and the solar system. Six science targets: 1. Origins of Near-Earth Plasma - to understand the origin and transport of terrestrial plasma from its source to the magnetosphere and solar wind. 2. Solar Energetic Particle Acceleration and Transport - to understand how and where solar eruptions accelerate energetic particles that reach Earth. 3. Ion-Neutral Coupling in the Atmosphere - to understand how neutral winds control ionospheric variability. 4. Climate Impacts of Space Radiation - to understand our atmosphere s response to auroral, radiation belt, and solar energetic particles, and the associated effects on nitric oxide (NO) and ozone. 5. Dynamic Geospace Coupling - to understand how magnetospheric dynamics provides energy into the coupled ionosphere-magnetosphere system. 6. Heliospheric Magnetics - to understand the flow and dynamics of transient magnetic structures form the solar interior to Earth.
    Keywords: Solar Physics
    Type: M10-0777 , Global Change and The Solor-Terrestrial Environment Meeting; Jun 12, 2010 - Jun 17, 2010; Aspen, CO; United States
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  • 9
    Publication Date: 2019-08-14
    Description: To gain an understanding of the Sun-Earth system, including how and why the sun varies, how the earth responds, and the impacts on humanity, research is needed that has a integrated and systematic approach. The Living With a Star (LWS) program represents an important element in this regard both to continued progress in space science in general and in Aeronomy in particular. A fundamental question in Aeronomy is how the variable sun affects the ionosphere, thermosphere, and mesosphere. The LWS program focuses on those areas of scientific understanding that promote progress in areas that have human impact and can be investigated with space borne instruments. The Geospace Mission Definition Team is charged with investigating the science priorities identified by the LWS Science Architecture Team and developing an approach to making the necessary measurements in concert with other missions and programs. An important aspect of this approach is that all LWS measurement programs are operating simultaneously for several years. We will review some of the areas that the LWS SAT have emphasized in Aeronomy, including understanding the effects of solar variability on ionospheric density and irregularities, the effects of solar variability on the mass density of the atmosphere at LEO altitudes, and the effects of solar variability on near-surface temperatures and on ozone distribution.
    Keywords: Astrophysics
    Type: Fall 2001 AGU Meeting; Dec 10, 2001 - Dec 14, 2001; San Francisco, CA; United States
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