News!
  
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
   (12070,0,55550)[nT].

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 
  term operation.

Contact: Hayashi