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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/23462

Title: Tomografia sísmica de alta resolução com gerador de ondas elásticas
Other Titles: High resolution seismic tomography using an elastic wave generator
Authors: Mendes, Manuela
Teixidó, Teresa
Issue Date: 2008
Abstract: Several seismic surveys were carried out in the urban Palmela region (Azeitão), using 48 channel seismograph and single geophone per channel. The scope was mainly to test the efficiency and reliability of seismic source, an elastic wave generator using an accelerated hammer drop, to produce shallow velocity models with high resolution. A 300 m profile was acquired and the position based on constant topography and neighbouring the wells location previously drilled for aquifers delineation. Despite the presence of significant urban and coherent noise, the seismic source revealed effective to sum several shots and enhancing the ratio signal/noise. First arrivals processing illustrate clearly the geological structures until 60 m depth. A preliminary stack section did not support the findings in the first arrivals study. To resolve the difference, the field reflection data are being reprocessed to provide more details about the layering and lateral structures already observed in the refraction data.
Publisher: Instituto Politécnico de Tomar (Portugal)
Keywords: High resolution seismic tomography
Elastic wave generator
Tomografia sísmica de alta resolução
Ondas elásticas
URI: http://hdl.handle.net/10481/23462
Citation: Mendes, M.; Teixidó, T. Tomografia sísmica de alta resolução com gerador de ondas elásticas. En: 6ª Asemblea Hispano Portuguesa de Geodesia y Geofisica: libro de resúmenes, Tomar (Portugal) 11-14 febrero 2008. [Tomar]: Instituto Politécnico de Tomar (IPT), 2008. pp. 279-280. [http://hdl.handle.net/10481/23462]
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