Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm33d..01m&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #SM33D-01
Physics
2768 Plasmasphere, 2774 Radiation Belts, 2788 Magnetic Storms And Substorms (7954), 2794 Instruments And Techniques
Scientific paper
Arrays of ground-based magnetometers provide the capability for the meso- and global-scale monitoring of current systems and waves in the coupled magnetosphere-ionosphere system. Recent advances in the processing of multiple time series magnetometer array data allows the inversion of standing Alfven eigenfrequencies for the purposes of monitoring density depletion and refilling dynamics in the plasmasphere, plasmapause and plasmatrough regions. In addition, mid-latitude magnetometer arrays can also allow the monitoring of the ULF waves which are implicated in the transport and acceleration of MeV energy electrons in the radiation belts, as well as monitoring the penetration of asymmetric ring current and substorm current systems to mid- and low-latitudes during storms. Fluxgate magnetometer technology is relatively inexpensive, and the data sets are small allowing relatively easy collection of data through the low-band-width internet connections. However, the accumulation of magnetometer data into nation-, continental- and global-scale array coverage provides a powerful tool for pursuing IHY science objectives. We present examples of how these concepts might be exploited through the UN Developing Nations Small Instrument program with the creation, coordination and operation of an IHY Magnetometer Array (IHYMag). The IHY science focus on storms also ensures that mid-latitude and even equatorial developing nations coverage would ensure IHYMag data is a valuable resource for IHY scientists. African locations offer a prime opportunity to expand the global magnetometer coverage into this region during IHY. Technology being developed for instrument development and data collection for the CARISMA formerly CANOPUS) magnetometer array expansion, including planned use of solar and/or wind turbine power at the remote BACK magnetometer site in the CARISMA array, might also form a basis for the hardware development which could be used to support a Developing Nations Small Instrument Magnetometer Array for IHY under the co-ordination of United Nations Basic Space Science program.
Mann Ian R.
Milling David K.
Moldwin Mark
Yizengaw Endawoke
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