社団法人　物理探査学会
第125回(平成23年度秋季)学術講演会

講演要旨(和文) 講演要旨(英文) The Landsonar and Differential electric sounding method were new technique used in recent years .Good results from shallow engineering surveys have been obtained . Landsonar used high and super wide-band frequency , not only advancing greatly the resolution but also avoiding the interference of the vibratory noise of passerby , cars and other machines . The C-1 DES machine can avoid the interference of stray electricity and have high resolution . Those two methods can adapt for surveying in city, even in busy and noise city . Their advantages was proved in the practice projects and get the good effect in shallow high resolution survey in city.