in this paper we are going to show the importance of mode identification in microtremor array analysis. the idea come from four concentric ambient noise array recordings with aperture 100 to 1000 meters, performed in southern urban area of tehran near the shrine of imam khomeini. these measurements were part of a comprehensive research project with the aim of determination of deep shear wave ve...

Abstract Ambient seismic noise becomes more and important helpful on assisting velocity model inversion, earthquake detection, ground motion prediction. Based the analysis of continuous data ocean wave height, we find that height winter storms have a controlling factor DF microseismic energy level its frequency extent in time scale. It shows high low accompanied with wide narrow range consisten...

The determination of the dynamic properties and ground effect soil plays an important role in reducing damages due to earthquakes. One methods determining a region is measurement microtremors microtremor method has been widely used for this purpose recent years. Microtremor measurements were made at 36 points order determine local Kütahya Dumlupınar University Evliya Çelebi Campus which constan...

Evaluasi kondisi jembatan diperlukan untuk me lihat keadaan sebagai tindakan pencegahan terjadi kerusakan yang lebih besar pada struktur jembatan. Jembatan Kuranji terbagi menjadi 2 bagian yaitu lama berusia 30 tahun dan baru 9 tahun. dilakukan dengan menggunakan pengukuran mikrotremor. Pengukuran di 12 titik durasi perekaman 90 menit. Hasil mikrotremor diolah metode Horizontal to Vertical Spec...

This article explores the possibility to measure deformations of building foundations from measurements of ambient noise and strong motion recordings. The case under study is a seven-storey hotel building in Van Nuys, California. It has been instrumented by strong motion accelerographs, and has recorded several earthquakes, including the 1971 San Fernando (ML ˆ 6.6, R ˆ 22 km), 1987 Whittier–Na...

Abstract We present three case studies from recent site investigations that have utilised geophysical data to supplement traditional geotechnical investigations. The refraction microtremor (ReMi) method, which measures the shear-wave velocity of subsurface soil profile, is used enhance our overall understanding conditions. Interpolation closely spaced one-dimensional velocity-depth profiles alo...

Abstract. Earthquake site response is an essential part of seismic hazard assessment, especially in densely populated areas. The shallow geology the Netherlands consists a very heterogeneous soft sediment cover, which has strong effect on amplitude ground shaking. Even though low- to moderate-seismicity area, risk cannot be neglected, particular, because induced earthquakes occur. aim this stud...