شماره ركورد كنفرانس :
4731
عنوان مقاله :
Determination of fundamental vibration period from microtremor and down-hole methods (case study: Qazvin)
عنوان به زبان ديگر :
Determination of fundamental vibration period from microtremor and down-hole methods (case study: Qazvin)
پديدآورندگان :
Azadi Asghar asghar_azadi_2007@yahoo.com Assistant Professor, Payame Noor University,Parand, Tehran , Azadi Mozhdeh mozhdeazadi1990@gmail.com M.Sc. Student,Islamic Azad University, Science and Research Branch, Tehran , Siahvoshi Alireza ar.siahvoshi@gmail.com M.Sc. Student,Islamic Azad University, Science and Research Branch, Tehran
كليدواژه :
Nakamuramethod , resonance frequency , horizental to vertical (H , V) , microtermore , down , hole methods
عنوان كنفرانس :
هجدهمين كنگره ملي ژئوفيزيك ايران
چكيده فارسي :
In order to completing geotechnical information and determining of resonance frequency in the Qazvin site, Single station microtremor measurements and downhole methods were carried out. Single station microtremor measurements were done at 5 stations in the Qazvin site. Data were recorded by 2 Hz seismometers and were processed based on the Nakamura (1989) method. The resonance frequency of the ground were determined from the horizontal to vertical (H/V) spectral ratios of microtremors and was developed for the site on the basis of the variation of the resonance frequency. Also, seismic profile testes with depth of 30 m and spacing 1.5 m included shear wave velocity with 3 channel have been done. Ultimately the results of microtremor measurements and down-hole methods were compared. The results indicated that both methods are in agreement with each other with the average value of 3.46 and 4.5 (s) for vibration period.
چكيده لاتين :
In order to completing geotechnical information and determining of resonance frequency in the Qazvin site, Single station microtremor measurements and downhole methods were carried out. Single station microtremor measurements were done at 5 stations in the Qazvin site. Data were recorded by 2 Hz seismometers and were processed based on the Nakamura (1989) method. The resonance frequency of the ground were determined from the horizontal to vertical (H/V) spectral ratios of microtremors and was developed for the site on the basis of the variation of the resonance frequency. Also, seismic profile testes with depth of 30 m and spacing 1.5 m included shear wave velocity with 3 channel have been done. Ultimately the results of microtremor measurements and down-hole methods were compared. The results indicated that both methods are in agreement with each other with the average value of 3.46 and 4.5 (s) for vibration period.
