Ionosonde Stations in Japan



Ionosonde Stations in Japan
 Station Actual observation start time
(after 17:00 JST on 22 Apr 2003)
 Geographic Latitude
 (WGS-84)
 Geographic Longitude
 (WGS-84)
 Magnetic Latitude
 (IGRF-10(2005))
 Magnetic Longitude
 (IGRF-10(2005))
 Wakkanai/
 Sarobetsu
 timestamp
-105 sec
 45.16°N  141.75°E  36.4°N  208.9°E
 Kokubunji  timestamp
-30 sec
 35.71°N  139.49°E  26.8°N  208.2°E
 Yamagawa  timestamp
+45 sec
 31.20°N  130.62°E  21.7°N  200.5°E
 Okinawa/
 Ogimi
timestamp
+120 sec
 26.68°N  128.15°E  17.0°N  198.6°E
 
Ionosonde Stations in the past
 Station   Geographic Latitude
 (WGS-84)
 Geographic Longitude
 (WGS-84)
 Magnetic Latitude
 (IGRF)
 Magnetic Longitude
 (IGRF)
 Wakkanai   45.39°N  141.68°E  36.6°N  208.8°E
 Okinawa   26.28°N
 (Tokyo Datum)
 127.81°E
 (Tokyo Datum)
 Akita   39.7250°N
 (Tokyo Datum)
 140.0533°E
 (Tokyo Datum)


Actual observation start time
00:00 JST on 13 May 2106 to present Wakkanai/Sarobetsu  VIPIR2 timestamp - 75 sec
18:00 JST on 15 May 2017 to present Kokubunji  VIPIR2 timestamp + 0 sec
15:00 JST on 10 May 2017 to present Yamagawa  VIPIR2 timestamp + 75 sec
16:15 JST on 17 May 2017 to present Okinawa/Ogimi  VIPIR2 timestamp + 150 sec
 
17:00 JST on 22 Apr. 2003
to
present
Wakkanai/
 Sarobetsu
 10C timestamp - 105 sec
Kokubunji  10C timestamp - 30 sec
Yamagawa  10C timestamp + 45 sec
Okinawa/
 Ogimi
 10C timestamp + 120 sec
 
14:15 JST on 15 Jan. 2003
to
16:45 JST on 22 Apr. 2003
Wakkanai  10A timestamp - 60 sec
Wakkanai  10C timestamp - 105 sec
Kokubunji  10A timestamp + 0 sec
Kokubunji  10C timestamp - 30 sec
Yamagawa  10A timestamp + 60 sec
Yamagawa  10C timestamp + 45 sec
Okinawa/
 Ogimi
 10C timestamp + 120 sec 
 
16 Nov. 2001 JST
to
14:00 JST on 15 Jan. 2003
Wakkanai  10A timestamp - 60 sec
Wakkanai  10C timestamp - 90 sec
Kokubunji  10A timestamp + 0 sec
Kokubunji  10C timestamp - 30 sec
Yamagawa  10C timestamp + 30 sec
Okinawa/
 Ogim
 10C timestamp + 90 sec 
 
1987 JST
to
15 Nov. 2001 JST
Wakkana  9B/10A timestamp - 60 sec
Akita  9B timestamp - 30 sec
Kokubunji  9B/10A timestamp + 0 sec
Yamagawa  9B timestamp + 30 sec
Okinawa  9B/10A timestamp + 90 sec 


Great circle distance
Great circle distance(km) Wakkanai Wakkanai/Sarobetsu Kokubunji Yamagawa Okinawa/Ogimi
Wakkanai 1092 1846 2403
Wakkanai
/Sarobetsu 
1068 1828 2385
Kokubunji 1092 1068 963 1472
Yamagawa 1846 1828 963 557
Okinawa/Ogimi 2403 2385 1472 557


Copyright (C) 2011 National Institute of Information and Communications Technology. All Rights Reserved.