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Vol.1 , No. 1, Publication Date: Mar. 23, 2018, Page: 52-71
 of observations of underground sound in the well and the tunnel, we had the opportunity to make longer observations of the underground sound almost in the center of the Euro-Asian continent. In accordance with the joint memorandum from 2003 between the Russian Academy of Sciences and the Meteorological Department of the Government of India on the northern outskirts of Delhi in 2007, a 100 m deep well was drilled on the territory of the seismic observatory for acoustic measurements. Together, Indian and Russian scientists in the well installed original Russian equipment. It was supposed to limit the observation of underground sound at the initial stage by a period of six months, but Indian scientists succeeded in discovering very interesting acoustic phenomena in the process of earthquake development, and at the end of 2008 a joint decision was made to extend the observations of the underground sound for at least three more years. At the end of the 20th century, the author made a lot of efforts to create an original device for recording underground sound. This was justified by the fact that at that time on the territory of the USSR a tenth of citizens lived in seismically dangerous regions. For comparison, it should be recalled that in Japan, more than half of citizens live in seismically hazardous areas, in China - one third, and in the United States of America - one-seventh. On the territory of modern Russia: Sakhalin, Kamchatka, Transbaikalia, the Northern Caucasus live in a zone of real danger less than one-hundredth of the citizens. Nevertheless, the fundamental study of underground sound, which carries primary, independent and reliable information directly about movements in the upper part of the earth's crust, continued.&picture=http://www.aascit.org/aascit/decorators/img/journal/933.jpg)
| [1] | Askold Belyakov, Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia. |
Acoustic noises on the surface and in the depths of the earth's crust are objective evidence of the processes taking place in the Earth. After short (several days in Belarus in 1989, three days in the US in 1990 and four months in Japan in 1998) of observations of underground sound in the well and the tunnel, we had the opportunity to make longer observations of the underground sound almost in the center of the Euro-Asian continent. In accordance with the joint memorandum from 2003 between the Russian Academy of Sciences and the Meteorological Department of the Government of India on the northern outskirts of Delhi in 2007, a 100 m deep well was drilled on the territory of the seismic observatory for acoustic measurements. Together, Indian and Russian scientists in the well installed original Russian equipment. It was supposed to limit the observation of underground sound at the initial stage by a period of six months, but Indian scientists succeeded in discovering very interesting acoustic phenomena in the process of earthquake development, and at the end of 2008 a joint decision was made to extend the observations of the underground sound for at least three more years. At the end of the 20th century, the author made a lot of efforts to create an original device for recording underground sound. This was justified by the fact that at that time on the territory of the USSR a tenth of citizens lived in seismically dangerous regions. For comparison, it should be recalled that in Japan, more than half of citizens live in seismically hazardous areas, in China - one third, and in the United States of America - one-seventh. On the territory of modern Russia: Sakhalin, Kamchatka, Transbaikalia, the Northern Caucasus live in a zone of real danger less than one-hundredth of the citizens. Nevertheless, the fundamental study of underground sound, which carries primary, independent and reliable information directly about movements in the upper part of the earth's crust, continued.
Keywords
Geophone, Vector Measurements, High Resolution, Acoustic Noise of the Earth, Well, Acoustic Events
Reference
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