Development of a detector of variation of underground water level using ultrasound

Daitaro Okuyama, Hiroshi Inoue, Yasuo Yoshida, Kazuhiko Imano, Shinro Abe

Research output: Contribution to journalArticlepeer-review


A system which measures the variation of underground water level in a bored hole using ultrasound is proposed. The principle of the measurement is the ultrasonic pulse echo method. A transducer is hung in the underground water and sends 1 MHz of ultrasound with a 50 μs pulse width upward to the water surface. The equipment has the ability to measure a depth of about 15 m with almost 3 cm resolution. An experiment using a telemeter system was carried out in a landslide area where there was much snow and no commercial power supply; the rising of the water level was observed with the thawing of the snow.

Original languageEnglish
Pages (from-to)115-117
Number of pages3
JournalJapanese journal of applied physics
Issue numberS1
Publication statusPublished - 1986 Jan
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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