October 16, 2006
KST UHF operation memorandum for the
October 16, 2006 experiment
@(Using Netscape might
be in trouble on this page.)
Experiment name: sp_ni_con:@
arc1 (CP1)
@@@@@@ pointrheight 185.1
77.5 299.6
elan files:puny :/kst/exp/ arc1/arc1.elan
Pulse scheme: arc1
Start time: 20:00 UT on October 16, 2006
End time: 01:00 UT on October 17, 2006
Participants: Satonori
Nozawa, Takuo Tsuda, and Tetsuo Motoba
Before our experiment:
RIOE2006
After our experiment:
Nothing
Other instruments.
Photometer, STEL
digital camera (1-min interval), NIPR digital All-sky camera (30-sec interval),
STEL proton imager.
---------------------------------------------------------------------------
Note:
(time in UT)
October
16
@@@@@ Raining.@ Temperature is 3 deg.
19:58@ runexp /kst/exp/
arc1/arc1 20:00 cp1 NI
19:59@
sod runexp /kst/exp/arc1/arc1 20:00 cp1 NI
@@@@@ kir runexp /kst/exp/ni/arc1/arc1 20:00 cp1
NI
20:00@ START
@@@@@ at
EROS4 console (UHF)
20:01@ enablerec
@@@@@ sod enablerec
@@@@@ kir
enablerec
20:09@ (at
matilda)@ guisdap –a
@@@@@ rtg
@@@@@
webtg
20:02 1.6 MW@
(according to guisdap, while 2520 kW in rtg: rtg is wrong)
20:28
HRP(?)
20:31
1.3 MW
21:32
HRP (?)
21:34
1.3 MW
21:42
still raining
23:00
raining 2 deg.@ A bit snowing
01:00@ stopexp (all sites)
Snowing!!!
Summary
The ionosphere
was active and particle precipitation with higher energy (for example, the
electron density became higher at lower E-region heights (~90 km), but the
weather was bad (raining, and then snowing: this was the first snow this
winter!). F region electron density was low; making the remote observations
difficult.
Descriptions
of SPs
sp_ni_mi
We will make an optical campaign using aurora cameras, proton imagers and 4-wavelength photometer with tje EISCAT UHF radar. Clear sky and higher geomagnetic activity are desired. Although we made request for 5 nights, we will run only 3 nights depending on conditions.
RIOE2006
The main goal of
the experiment is an investigation of the mechanisms of high power radio-wave
interaction with F-region ionospheric plasma. The UHF EISCAT radar will run the
tau2pl program to measure the spatial and temporal variations of the
ionospheric parameters simultaneously with multispectral optical observations
of the HF induced optical emissions by ALIS (IRF) and ASK (KTH). In particular
we are going to study: the differences in temporal behavior of the different
optical emissions as well as the electron temperature and density; the
pump-power dependences of the emission intensities. To conduct the experiment
successfully quite geophysical conditions, strong enough ionospheric F region,
and clear sky are needed. If ionospheric conditions will be insufficient
(critical frequency less than 4 MHz) or there will be strong auroral activity
we will run same observations (but the arc1 program will be used instead the
tau2pl for the UHF radar) to study the influence of the HF heating on the
ionosphere-magnetosphere interaction.
TEST
We made a test
run (normal arc1/CP 1) from 1000 UT to ~1140 UT. Spectra of Tromsø and
Kiruna sites looked O.K., but Sodankyla SNR is lower than expected (say 1/4 of
SNR of Kiruna). We changed polarizer-settings due to gsetpolarizerh with
several values, but no improvementc