Geospatial Information Authority nke Japan
The Geospatial Information Authority of Japan (国土地理院, Kokudo Chiri-in), ma ọ bụ GSI, bụ ụlọ ọrụ mba na-ahụ maka nyocha na maapụ ala mba Japan. Aha mbụ nke nzukọ ahụ site na 1949 ruo Machị 2010 bụ Geographical Survey Institute; [1] n'agbanyeghị ahagharị ya, ọ na-ejigide otu mkpụrụedemede. Ọ bụ akụkụ pụrụ iche nke Ministry of Land, Infrastructure, Transport and Tourism. Isi ụlọ ọrụ ya dị na Tsukuba City nke Ibaraki Prefecture
E tinyela sistemu nlekota MT na-akwụsị na Japan kemgbe Eprel 1996, na-enye ndekọ na-aga n'ihu nke akara MT na Mizusawa Geodetic Observatory na ọdụ Esashi nke GSI. Ọdụ ụgbọ mmiri ndị a na-atụ ngbanwe dị na mbara ala electromagnetic nke kwekọrọ na ọrụ seismic. Data usoro oge geophysical raw sitere na ụlọ ọrụ nyocha ndị a na-enweta n'efu maka ndị sayensị, na-eme ka ọmụmụ ihe ọzọ na mmekọrịta dị n'etiti ihe omume EM na ọrụ ala ọma jijiji. Data usoro oge MT sitere na ụlọ ọrụ nlekota ala ọma jijiji GSIJ dị na ntanetị na http://vldb.gsi.go.jp/sokuchi/geomag/menu_03/mt_data.html 2016-10-13 echekwara na Wayback Machine