f Shallow seismic reflection results in the Vouga basin region (Northern Portugal)

The shallow seismic reflection method has two basic modes of employment: CMP gather acquisition (multichannel) and Optimum Offset acquisition (single channel). These two modes of acquisition were used in a coastal area near Ovar (Northern Portugal). In this setting, a series of profiles were conducted with varying modes of acquisition. The main variations were placed in terms of geophone frequency (damped 14 and 100 Hz), source (hammer and buffalo gun) and single or multichannel acquisition. Here in, a comparative study of the results, based on acquisition, processing and interpretation will be shown.