Physics – Plasma Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm41b1705o&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM41B-1705
Physics
Plasma Physics
[2407] Ionosphere / Auroral Ionosphere, [2471] Ionosphere / Plasma Waves And Instabilities, [2481] Ionosphere / Topside Ionosphere, [7845] Space Plasma Physics / Particle Acceleration
Scientific paper
On March, 20th 2009 the Cascades2 sounding rocket was launched from Poker Flat Alaska reaching an apogee of 564km. Two electric/magnetic field subpayloads were ejected at a high velocity parallel to the local magnetic field and included a suite of 3-axis fluxgate magnetometers and crossed dipole electric field antennas with receivers from DC to HF. On the downleg, at altitudes near ~450km, the array of Cascades2 payloads encountered a Poleward Boundary Intensification (PBI) and strong Alfvenic activity with perturbations in the DC electric field of >200mV/m. In this region the two electric field subpayloads were separated by ~6km with a 5 degree angle between their separation vector and the local magnetic field. Initial analysis of the despun DC electric field data differences between payloads of 20 mV/m that are primarily oriented in the East-West direction which at our separation distance of 6km correspond to shears of .0033 mV/m^2. Coupling of these shears to other wave modes is investigated and their role as a possible driver of ion heating is discussed.
Kintner Paul M.
Lessard Marc
Lundberg E. T.
Lynch Kristina Anne
Mella M. R.
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