EMPIRICAL CORRECTION OF RESULTS OF THE H/V SPECTRAL RATIO METHOD IN MICROSEISMIC RESEARCH AND ESTIMATION OF EXCESS INTENSITY
Keywords:
Ground, vibration, H/V, spectrum, amplitude, frequency, period, time, empirical correction, regression equation, extinction coefficient, excess intensity.Abstract
The article uses experimental seismometric data to determine the microseismic vibration of grounds. Using these data, an empirical correction was made to the maximum value of the vibration amplitude determined by the H/V spectral ratio method. The graph of the exponential decay of the oscillatory motion was obtained in the spectral ratio of the H/V oscillation amplitude. According to this law, the damping coefficient of the specific vibration amplitude in the ground is determined. A regression equation was created for grounds with the same extinction coefficient, and a general empirical formula was developed. At the end of the work, the average absolute difference of the excess intensity value was determined by introducing a correction to the amplitude.
References
Калинина А.В., Аммосов С.М., Волков В.А. Сейсмический шум: опыт применения в инженерно-геофизических исследованиях //Разведка и охрана недр. 2008. № 1. С. 32–34.
Боголюбов Б.Н., Лобанов В.Н., Назаров В.Е., Рылов В.И., Стромков А.А., Таланов В.И. Амплитудно-фазовая модуляция сейсмоакустической волны под действием лунно-солнечного прилива//Геология и геофизика. 2004. Т. 45. № 8. С. 1045–1049.
Abduraxmonov Q.P., Egamov O‘. Fizika kursi (1-qism)//Toshkent axborot texnologiyalari universiteti. 2008. № 1. Bet. 178-181.
А.П. Римкевич. Сборник задач по физике (https://idum .uz/ru/archives/10216). 1987. С. 62.
Л.Н. Сенин., Т.Е. Сенина., М.Н. Воскресенский. Способ сейсмического микрорайонирования с использованием спектральных отношений H/V // Геофизический журнал № 4, Т. 42, 2020.
Qo‘llanilgan dastur: GEOPSY, (H/V Nakamura’s ratio), Waves. [https://www.geopsy.org/documentation/geopsy/hv.html]
Nogoshi, M. and Igarashi, T. (1971), “On the Amplitude Characteristics of Microtremor (Part 2) (in Japanese withEnglish abstract)”, Jour. Seism. Soc. Japan, 24, 26-40.
Nakamura, Y. and Saito, A. (1983), “Estimations of Seismic Response Characteristics and Maximum Accelerationof Surface Ground using Strong Motion Records (in Japanese)”, Proc. 17th JSCE Earthquake Eng. Symposium,25-28.
