Sonic Logging - Onpakensou

Japanese: 音波検層 - おんぱけんそう
Sonic Logging - Onpakensou

...The most typical ones are as follows. (1) Sonic logging Measures the propagation speed of elastic waves in the earth's formations. In principle, ultrasonic waves of about 20 kHz are emitted from the ultrasonic oscillator of the sonde in the borehole, and the propagation time between two receivers is measured.

*Some of the terminology that refers to "sonic logging" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…その代表的なものを次にあげる。(1)音波検層 地層中の弾性波伝播(でんぱ)速度を測定する。原理的には,坑井中のゾンデの超音波発振子から20kHz程度の超音波を発射し,2個の受振子間の伝播時間を計る。…

※「音波検層」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

<<:  Onbashira - Onbashira

>>:  Onba - Onba

Recommend

Onto - Pagoda

...Kure City on the mainland was separated from t...

Village register - Goson takacho

In the Edo period, this was a ledger in which feud...

Banquet

〘 noun 〙 The act of setting up a party for food an...

Oba Mikuriya

The Mikuriya of Ise Shrine was established in Oba...

Cîteaux (English spelling)

…It is a revolutionary monastic order founded in ...

Commentaria

…In the past, it was called the late Commentary S...

Electric fish - denkiuo (English spelling) electric fish

A fish that generates electricity continuously or...

The General Theory of Employment, Interest and Money

The major work of British economist JM Keynes. Pub...

Claude, Albert

Born: August 24, 1898, Longrie, Belgium [Died] May...

presynaptic facilitation

…The former is because the directions of the ioni...

Lithium - Lithium (English spelling)

It belongs to group 1 of the periodic table and i...

Rabbit fish (English spelling)

...This species has pelvic fins with spines in fr...

Aito [town] - Aito

A former town in Aichi County, in the central-east...

Kusayamoro - Kusayamoro

A marine fish belonging to the order Perciformes ...

Kani-Krodha (English spelling)

...Its Sanskrit name is Kani-Krodha, and it is sa...