March 4, 2003
KST
UHF operation memorandam for March 4 BY S. Nozawa
@(Using Netscape might be in trouble on this
page.)
Experiment name: arc1
(normal arc1 with the field-aligned-position:(184.0,77.1, 292.9)
We will make an optical
campaign using high resolution aurora cameras and 4-wavelength photometer with
EISCAT UHF radar. We strongly hope to use the ARC mode (at field-aligned
position) with the UHF radar. Sweden will contribute 8hrs to this campaign.
Also Norway will contribute 16hrs. NI(18), SW(8), NO(16)
elan files:
arc1-u.elan, arc1-k.elan, arc-s.élan (just use arc1 series)
directory:
/kst/exp/arc1-u (arc-k, arc1-s)
Pulse scheme: arc1
Start time: 19:01 UT on
March 4, 2003
End time: 01:00 UT on
March 5, 2003
Participants: Satonori
Nozawa, Shuei Tomida, and Maarten Blixt
Before our experiment:
ALTA (Vikki Howells/Ivan Finch)
After our
experiment:@ Nothing
VHF is running
(ALTA:lt1nw-F2N) until 22:30
Heating is running
until about 22
---------------------------------------------------------------------------
Note:
(time in UT)
March
4
@@@@@ It was cloudy at 17:20. However, I saw
aurora at 18:40 !!!
@@@@@ The sky is almost clear. Moderate
activity.
19:01 START (enablerec;
kir enablerec; sod eneablerec)
19:06@ kir rtg.@It worked. It is O.K.
at Kiruna
19:07@ something wrong at Sodankyla.
19:09@ restarted arc1-s.@@ Now it is O.K.
19:14@ 1253 kW
21:33
and 21:35 Pretty sharp E-region Ne enhancements.
22:13@ Electron densities in the E-region and
F-region are enhanced.
22:13@ Cloudy?@
22:30@ VHF stopped.
23:09@ 1310 kW
@@@@@ From about 2309 to 2321 I saw some black
arcs, and
@@@@@ flickering aurora according to Maarten.
23:23@ Electron densities
around 100 and 150 km are enhanced, but
@@@@@ that at 150 km disappeared 1-min after.
March 5
00:23@ 1332 kW
00:52@ 1274 kW
01:00 stopexperiment
----------------------------------------------------------------------
Summary:
Moderate
Tx power (about 1250 - 1320 kW).@
Tx
is very stable.
Relatively
good weather.
Geomagnetical
activity was high.
-----------------------------------------------
ALTA UK(40), GE(40),
SW(20)@ Mike Kosch
UHF
This is the UHF part of the artificial
aurora and Langmuir turbulence experiment. The mode will probably be similar to
previous artificial aurora campaigns, namely tau2 on the UHF with a dedicated
Langmuir turbulence experiment (developed by Brett Isham) on the VHF and
simultaneous heating. This experiment needs good optical conditions, but low
geomagnetic activity. It can therefore be treated as an alternative to the
CP1-ARC experiment on days when both are scheduled, as conditions for these are
mutually exclusive. Because of the requirements on optical conditions, there
will almost inevitably be some degree of cancellation.
Heating
This is the heater part of the artificial
Langmuir turbulence and aurora experiment, see the notes for the UHF part. This
booking supersedes the Swedish "HFoptical" booking, which should be
deleted.@ Note that the Swedish
"arcHeating" booking still stands, as this is part of the alternative
experiment on natural auroras, which requires more active conditions.
VHF
This is the VHF part of the artificial
Langmuir turbulence and aurora experiment, see the notes for the UHF part.
Although a four-hour run has been requested, this will be followed by a
two-hour run requested by France (FR-AURORA), from 2030-2230, using the same
modulation to constitute a six-hour continuous VHF run in compliance with the
rules.