HR: 13:40h
AN: SM33D-01 INVITED     [Abstracts]
TI: Ground-based Magnetometer Array Science for IHY: Opportunities for an Array in Africa within the UNBSS Developing Nations Small Instrument Program
AU: * Mann, I R
EM: imann@phys.ualberta.ca
AF: Dept. of Physics, University of Alberta, Avadh Bhatia Physics Laboratory, Edmonton, AB T6G 2J1 Canada
AU: Milling, D K
EM: dmilling@phys.ualberta.ca
AF: Dept. of Physics, University of Alberta, Avadh Bhatia Physics Laboratory, Edmonton, AB T6G 2J1 Canada
AU: Moldwin, M
EM: mmoldwin@igpp.ucla.edu
AF: Department of Earth and Space Sciences University of California, Los Angeles, 595 Charles Young Drive East, Box 951567, Los Angeles, CA 90095-1567 United States
AU: Yizengaw, E
EM: ekassie@igpp.ucla.edu
AF: Department of Earth and Space Sciences University of California, Los Angeles, 595 Charles Young Drive East, Box 951567, Los Angeles, CA 90095-1567 United States
AB: 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.
DE: 2768 Plasmasphere
DE: 2774 Radiation belts
DE: 2788 Magnetic storms and substorms (7954)
DE: 2794 Instruments and techniques
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005