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AERIAL PHOTO / TRIANGULATION DATABASE SYSTEM FOR KOBE EARTHQUAKE IN 1995 
Hiroyuki Hasegawa , Kikuo Tachibana , PASCO Corporation ; Atsushi Okamoto , Tetsu Ono ,KYOTO University; 
Susumu Hattori FUKUYAMA University ; Michael Gildengorin , Geometric Computer Services 
Commission IV, Working Group 4 
KEY WORDS: GPS,Aerial ,Triangulation, Orthoimage, DEM/DTM, Three-dimensional CAD Database, 
Geotechnical-Engineering Project, Urban-Earthquake Deformation 
ABSTRACT 
Kobe Earthquake which was measured at 7.2 magnitude in January of 1995 has devastated the densely populated areas between Kobe 
and Osaka, Japan. Few hours following the earthquake, most of the Aerial Survey Organizations including Geographical Survey 
Institute(GSI), as well as, several private companies, have scheduled flights over the damaged area. The purpose of these flights was to 
document, as early and as rapidly as possible, the damage to the area. Flights were made based on the experience of these companies in 
similar natural disasters including earthquake, volcanic explosions, typhoon floods and tsunami attacks. Flights were planned and executed 
primarily without the intervention or guidance of any govemment or public organizations. 
Working group (Deformation Analysis of the Kobe Earthquake, using Digital Photogrammetry) jin Kobe Earthquake Investigation 
Commission of Japanese Geotechnical Society was organized and guided by Dr. Okamoto to summarize deformation measurement in the 
area using triangulated aerial photos before and after the earthquake to pursue digital Photogrammetric approaches for possible natural 
disasters and to establish the historical aerial photographic records on advanced 3D CAD based database system(GIS) system, including 
ground controls, aerial photos( triangulated and untriangulated ) and reference maps , such as disaster maps ,geological maps and 
geotechnical maps. 
Completion of the “ Kobe Earthquake aerial photo retrieval system “ina PC CAD environment has now preserved many existing technical 
materials, aerial photos, aerial triangulation results and ground controls’ records in a timely sense. 
Digital photogrammetric researchers and practitioners also recognized the systematized approaches against natural and social disasters ; 
cooperating with GIS systems and advanced surveying technologies, such as GPS surveying and Satellite image photogrammetry. 
  
  
  
  
  
343 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996