In order to understand the S wave velocity characteristic which has mainly applied to study the physical properties of underground using the surface wave structure, we have recently conducted a many number of researches in the SASW and MASW investigation. Especially the MASW investigation that extre...
In order to understand the S wave velocity characteristic which has mainly applied to study the physical properties of underground using the surface wave structure, we have recently conducted a many number of researches in the SASW and MASW investigation. Especially the MASW investigation that extremely look a convenient method for the dynamic physical propertis of underground in current is applied to the geotechnical design field. As increasing the articifical noise due to development of a downtown and extension of industrial activities, the quality of data in MASW investigation gradually depreciates below a reliable level. In this situation, we represent the Microtremor technique to make use of a source concerning the noise in order to improve a skin depth and a reliable level of data. In this study, we compared the Microtremor technique with MASW investigation setting up four survey lines to be followed direction parallel to complex road considering as a source for noise and took into account a varied number of aspects for the measured data in connection with a geophone space, a characteristic of channel 11, 15, and 21, and a distance from the source, in corroborating the arrangement of survey line for the Microtremor technique considering as the possibility of application in the field. That is, the purpose of this paper is to illustrate the section of S-wave velocty structure reconstructed from inversion and a reciprocial combination with MASW investigation to be related to the Microtremor technique and is to improve reliable level for the measured data comparing them with borehole logging data . As a result of the above-mentioned, we can ascertain that MASW investigation evidently shows the upgraded results in a measured data to be acquired from 2 m geophone space, but the Microtremor technique also appears a data of good quality in a channels to be acquired from 5 m and 15 m geophone space in survey line apart from 100 m in the point considering as a source for noise. In comparing the sections of S-wave velocty structure reconstructed from inversion with borehole logging data, we can recognize that they appropriately coincide with each boundary of geological stratum in depth. Especially considering as the interpreation of results in a combined data of Microtremor technique and MASW investigation, they represent a improved results, because of increasing a skin depth in consequence of increasing a data of low frequency component, better than the results of MASW investigation that generally showes lower skin depth in S wave velocity distributions. Key word : MASW, Microtremor, skin depth, combine
In order to understand the S wave velocity characteristic which has mainly applied to study the physical properties of underground using the surface wave structure, we have recently conducted a many number of researches in the SASW and MASW investigation. Especially the MASW investigation that extremely look a convenient method for the dynamic physical propertis of underground in current is applied to the geotechnical design field. As increasing the articifical noise due to development of a downtown and extension of industrial activities, the quality of data in MASW investigation gradually depreciates below a reliable level. In this situation, we represent the Microtremor technique to make use of a source concerning the noise in order to improve a skin depth and a reliable level of data. In this study, we compared the Microtremor technique with MASW investigation setting up four survey lines to be followed direction parallel to complex road considering as a source for noise and took into account a varied number of aspects for the measured data in connection with a geophone space, a characteristic of channel 11, 15, and 21, and a distance from the source, in corroborating the arrangement of survey line for the Microtremor technique considering as the possibility of application in the field. That is, the purpose of this paper is to illustrate the section of S-wave velocty structure reconstructed from inversion and a reciprocial combination with MASW investigation to be related to the Microtremor technique and is to improve reliable level for the measured data comparing them with borehole logging data . As a result of the above-mentioned, we can ascertain that MASW investigation evidently shows the upgraded results in a measured data to be acquired from 2 m geophone space, but the Microtremor technique also appears a data of good quality in a channels to be acquired from 5 m and 15 m geophone space in survey line apart from 100 m in the point considering as a source for noise. In comparing the sections of S-wave velocty structure reconstructed from inversion with borehole logging data, we can recognize that they appropriately coincide with each boundary of geological stratum in depth. Especially considering as the interpreation of results in a combined data of Microtremor technique and MASW investigation, they represent a improved results, because of increasing a skin depth in consequence of increasing a data of low frequency component, better than the results of MASW investigation that generally showes lower skin depth in S wave velocity distributions. Key word : MASW, Microtremor, skin depth, combine
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