Research of free oscillations of the Earth dynamics with a period of 20.5 minutes by laser interference method. O.A. LEVOSHKO, G.I. DOLGIKH

Authors

  • Ольга Александровна ЛЕВОШКО
  • Григорий Иванович ДОЛГИХ (Тихоокеанский океанологический институт им. В.И. Ильичёва ДВО РАН, Владивосток)

Keywords:

laser strainmeter, earthquake, tsunami, spectrum, free oscillations of the Earth

Abstract

Research of free oscillations of the Earth dynamics with a period of 20.5 minutes by laser interference method. O.A. LEVOSHKO, G.I. DOLGIKH (V.I. Il’ichev Pacific Oceanological Institute, FEB RAS, Vladivostok).

We analyzed the records of laser strainmeters, containing information about eight tsunamigenic earthquakes which occurred in various areas of the Pacific Ocean to study the dynamics of the free oscillations of the Earth with a period of 20.46 minutes. It is established that only on the record of one earthquake with a magnitude of 9.3 there is a different course of maxima for this oscillation.

Author Biographies

Ольга Александровна ЛЕВОШКО

инженер

Григорий Иванович ДОЛГИХ, (Тихоокеанский океанологический институт им. В.И. Ильичёва ДВО РАН, Владивосток)

доктор физико-математических наук, академик РАН, заведующий отделом

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Published

2021-04-15

How to Cite

ЛЕВОШКО, О. А., & ДОЛГИХ, Г. И. (2021). Research of free oscillations of the Earth dynamics with a period of 20.5 minutes by laser interference method. O.A. LEVOSHKO, G.I. DOLGIKH. Vestnik of the Far East Branch of the Russian Academy of Sciences, (2), 34–41. Retrieved from http://vestnikdvo.ru/index.php/vestnikdvo/article/view/730

Issue

No. 2 (2021)

Section

Earth sciences