Comparação de valores de VS30 obtidos através de métodos sísmicos e de dados topográficos de alta resolução dentro do Campus da Unesp - Rio Claro

• Autor(a) principal: Beluco, Rodrigo Oliveira [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155458; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-06-06/000883734.pdf
• topic: Geofisica; Ondas sísmicas; Cisalhamento; Rio Claro (SP); Geophysics

The Multichannel Analysis of Surface Waves method was applied in a well known place inside the UNESP's Campus, at Rio Claro, SP. The area where the studies were made is placed over the Paraná Basin terrain. The goals of the studies were to compare the results of the investigation of surface waves by seismic methods, and methods based on the use of high resolution topographic data provided by the USGS. The geophysics experiments were made by a multichannel setting, using a hammer as energy source. During de acquisition were made direct and indirect shots, trying to reduce the effect of the noise, generated by the traffic on the streets nearby the studies area. The study was divided in steps, the first one was the data acquisition, followed by the data processing, dispersion images generation, dispersion curves extraction and inversion. The inversion resulted in a S waves velocities model. The resultant profiles generated by geophysics experiments were very alike. The Vs30 map, generated by the USGS platform showed results very similar to the ones generated by the MASW experiment. After comparing the obtained results to the classification tables NEHRP and Eurocode 8, the values are very consistent to the regional geologic context and the data of the monitoring wells by the area. Thus, the methods showed to be efficient and trustable for determination of shear waves propagation, for this area