Lynette Gelinas

Space Science Center

Morse Hall

University of New Hampshire

Durham, NH 03824

e-mail: lynette.gelinas@unh.edu

Office: Morse Hall Room 208

Phone: (603) 862-4368

Fax: (603) 862-0311

Well, this page is not REALLY under construction, but I like this icon...

SAL Data

Arecibo Radar and Lidar

All-night Arecibo sodium color lidar plot for 19 Feb 1998, measuring sodium density.

All-night Arecibo color radar plot for 19 Feb 1998, measuring electron density.

Sodium and electron density line plots integrated over rocket flight upleg and downleg

Dust Detector

Charged dust density (actually, charge*density) vs. altitude on upleg and downleg . Instrumental effects due to quick changes in the floating potential have been removed, and the data corrected for variations in angle-of-attack which affect detector acceptance area.

Electric Field Booms

Draft of gradient drift wave GRL paper in Postscript (warning: 2.3 Meg file).

Sine waves over 10 seconds for V12 and V34 from 235 to 245 seconds and 235 to 255 seconds on downleg. Positive dust layer from 239 to 247 seconds, negative dust bump from 247 to 248 seconds.

Overlay sine wave and V data for 235 to 238 seconds

Electric Field Work-in-Progress

Electric field components perpendicular to the magnetic field on downleg.
E(north-up)
E(west)

And, in case there was any doubt about the relationship between the V1S data and the FTP current (although I still don't understand why the FTP is so spinny):
upleg
downleg

V1S data vs. time:
upleg
downleg
Compare to floating potential signal sent to UNH (sorry, not quite the same vertical scale, though the shape of the UNH floating potential does seem to reflect the 500 ms integration time constant):
upleg
downleg

85-100 km blow-up of V1S data on upleg and downleg

V1S data for the full flight . Purple trace is upleg, blue is downleg. ACS maneouver begins at ~114.5 km on upleg causing signal noise near apogee.

Example of 100Hz noise present on all efield channels, even V1s. Seems to be synchronous with spin rate (periodic envelope of 100Hz stuff). noise.gif

FTP

Wavelet transforms of FTP data: (see Electric Field Work-in-Progress above for some wavelet info and transforms of electric field data)

Notes:
X axis is altitude, Y axis is frequency, color corresponds to power in wavelet coefficient ("hot" colors = more power, "cool" = less power). Upleg data is best, since it is (mostly) unsaturated. Sharp data spikes at ~92.3 km and ~93 km correspond to low-gain/high-gain mode switching. FTP probe sweep frequency is 115 Hz.

Upleg plots:
91-94 km
93-94 km
92.5-93 km
Intensity of 115 Hz wave power corresponds to electron density;

Downleg plots (instrument is saturated in some regions, so not as reliable):
91.5-93 km
93-94 km

FTP RMS currents on upleg and dowleg . Red part is high gain mode, blue areas are low gain mode.

FFT: Ratio of 1st and 2nd harmonics of FTP rms current on upleg and dowleg . FFT done over 10 sweeps, regions where RMS current was saturated are neglected.

Magnitude of first harmonic of FTP (proportional to density) on upleg and dowleg .

Magnetometer

Magnetometer data: White line is magnetic field magnitude, gray line is B magnitude in the spin plane. Vertical units are in mG (assuming full scale for magnetometer channels is +/- 500 mG). mag1.gif

Magnetometer data: Arccos(B_spin/B_magnitude) to get magnitude of coning angle. Vertical units are in degrees. mag2.gif

Miscellaneous data plots

Combined plots of dust, V1S, and sqrt(v12m^2+v34m^2) (with low pass filter to get rid of 100 Hz noise) on upleg and downleg.

Artificial Aurora

Draft of artificial aurora paper, including all figures, gzipped Postscript (warning: 2.6 Meg file).

Figures only (GIF files):
Fig. 1a & 1b
Fig. 1c & 1d
Fig. 1e & 1f
Fig. 1g & 1h
Fig. 1i & 1j
Fig. 1k & 1l
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6