Facilitating Heliophysics Research by the Virtual Wave Observatory (VWO) Context Data Search Capability

Details Facilitating Heliophysics Research by the Virtual Wave Observatory (VWO) Context Data Search Capability Facilitating Heliophysics Research by the Virtual Wave Observatory (VWO) Context Data Search Capability

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh51b1274f&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH51B-1274

Physics

[1916] Informatics / Data And Information Discovery, [1976] Informatics / Software Tools And Services, [2799] Magnetospheric Physics / General Or Miscellaneous, [6999] Radio Science / General Or Miscellaneous

Scientific paper

Wave phenomena, ranging from freely propagating electromagnetic radiation (e.g., solar radio bursts, AKR) to plasma wave modes trapped in various plasma regimes (e.g., whistlers, Langmuir and ULF waves) and atmospheric gravity waves, are ubiquitous in the heliosphere. Because waves can propagate, wave data obtained at a given observing location may pertain to wave oscillations generated locally or from afar. While wave data analysis requires knowledge of wave characteristics specific to different wave modes, the search for appropriate data for heliophysics wave studies also requires knowledge of wave phenomena. In addition to deciding whether the interested wave activity is electrostatic (i.e., locally trapped) or electromagnetic (with propagation over distances), considerations must be given to the dependence of the wave activity on observer’s location or viewing geometry, propagating frequency range and whether the wave data were acquired by passive or active observations. Occurrences of natural wave emissions in the magnetosphere (e.g, auroral kilometric radiation) are often dependent also on the state (i.e., context) of the magnetosphere that varies with the changing solar wind, IMF and geomagnetic conditions. Fung and Shao [2008] showed recently that magnetospheric state can be specified by a set of suitably time-shifted solar wind, IMF and the multi-scale geomagnetic response parameters. These parameters form a magnetospheric state vector that provides the basis for searching magnetospheric wave data by their context conditions. Using the IMAGE Radio Plasma Imager (RPI) data and the NASA Magnetospheric State Query System (MSQS) [Fung , 2004], this presentation demonstrates the VWO context data search capability under development and solicits feedback from the Heliophysics research community for improvements. Fung, S. F. and X. Shao, Specification of multiple geomagnetic responses to variable solar wind and IMF input, Ann. Geophys., 26, 639-652, 2008. Fung, S. F., Announcement of a “Magnetospheric-State Query System”, American Geophysical Union SPA Section Newsletter, vol. XI, Issue 9, ftp://igpp.ucla.edu/scratch/aguspa/volume11_2004/vol11no009, January 28, 2004.

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