2008/01/26 Data transfer of seachcoil and fluxgate magnetometers
from Fort St John was restarted on Jan 15 and Jan 26,
respectively. They had data gaps for periods starting Dec 15
2007 and Oct 29 2007, respectively.
2007/09/13 There happened an accident of data gap at Luck Lake
due to out of disk space for an interval of over two days,
00:30UT Sept. 11 <===> 04:00 UT Sept. 13, 2007
2007/01/04 On-line data transfer from La Ronge site that
had been stopped since last July was restared by replacement
of a PCMCIA modem card which was found damaged when we
visited La Ronge last October.
2006/10/18 Lucky Lake site: Field work was carried out at
the site in order to correct a tilt of the sensor which was
caused by unusually heavy rain in the middle September.
Base line values were also adjusted.
Participants:Tenho Tuomi, Martin Connors, Kanji Hayashi
2006/08/17 Live magnetogram of Lucky Lake site was started
on service updating every 10 minutes.
2006/08/16 Lucky Lake: A new datalogging system was started
in operation and it is linked to internet by courtesy of
Tenho Tuomi who is the landlord and by support of Martin
Connors, Athabasca University.
2006/05/09 Data logging at FSJ and data tranafer were restarted.
2006/04/27 Data logging system at FSJ was shutdown due to problem
of local nework service.
2006/01/23 FSJ link and the live magnetogram were recovered.
2006/01/17 On-line data transfer from Fort St John was stopped
at 20:13 JST due to problem of network service.
2006/01/11 The subtracted base values, (Ho,Do,Zo), of FSJ files
stored in this site were changed from (12240,0,55600)[nT] to
2006/01/05 This web site was set up open for internet access
by using a DDNS.
2005/12/12 The live magnetogram plotting online data
from Fort St John was started.
2005/10/21 At Fort St John the fluxgate magnetometer of a NGL
model was replaced by a newer model of NGL. Online trasfer of
data was started by Internet link on a local CATV system.
Renewal of this site was largely contributed and was/will be
supported by Martin Connors, Athabasca University.
2005/09/30 All the data were recovered and became accessible.
(^^)The pioneering paper published in 1917 by Prof. T. Terada is placed Here!.
0. Since we moved to a semi-legacy machine jobs of producing
postscript files and converting them to GIF files take
time more (about 10 times) compared to those in the period
before Nov. 05, 2004. So we recommend to view or download
postscript files without GIF conversion.
1. Quick-look plots of 630nm imager data recorded at Hoc
Mon observatory, Ho Chi Minh City, are accessible at
VietNamData in the MENU. Also motion picture of night
airglow that includes so called "plasma bubble"
phenomenon observed at the near dip-equator region is
demonstarted at Bubble(movie). You can see the north-south
aligned bright and dark pattern drifting eastward with
a speed of 100m/sec.
2-1. Now daily sec-sampled files of fluxgate magnetometer
data can be plotted from the S&Pick/1sec page with
choices of amplitudes, time-resolutions, time-spans,
and some convertions of datum format.
-2. The S&Pick/1min page for 1 minute rate data was improved
to produce not only daily 3-componet magnetograms for
a selected location but also a dozen styles of stacked traces
of a single magnetic componet from multiple locations.
A function was added for listing character base data.
-3, At S&Pick/sc 10 Hz sampled induction magnetometer data
can be processed to plot amplitude traces for desired time
intervals and to display FFT spectrograms of power density,
polarization, and orientation of major axis. Several parameters
are selectable to see better time or frequency resolutions.
3. Fluxgate and search coil data from La Ronge is now
transferred by Internet base since September 27, 2002.
Remote copy of each day data is started at 08UT everyday
and takes one and a quator hours to send all 6MB data
of a day. We can see an up-to-date data within a delay
of 32 hours.
Online data transfer from La Ronge was restarted on
Octover 26, 2004 after a long data gap almost 10 months
since January 05, 2004.
4. New sites.
At Rach Tau, Vietnam, 8.590N,105.763E(dip latitude ~0.4N)
a fluxgate and a search coil magnetometers were installed
December 10, 2002. Just before that setting up we had a
3 days test run also at Hon Khoai Island 20km in the
south of Rac Tau. Hon Khoai is closer to the the
dip-equator than Rac Tau but supply of electric power
is too short(four hours daily) to establish a long