TY - JOUR
T1 - Development of a detector of variation of underground water level using ultrasound
AU - Okuyama, Daitaro
AU - Inoue, Hiroshi
AU - Yoshida, Yasuo
AU - Imano, Kazuhiko
AU - Abe, Shinro
PY - 1986/1
Y1 - 1986/1
N2 - 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.
AB - 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.
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U2 - 10.7567/JJAPS.25S1.115
DO - 10.7567/JJAPS.25S1.115
M3 - Article
AN - SCOPUS:19244375338
VL - 25
SP - 115
EP - 117
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - S1
ER -