High-Resolution Seismic Imaging Using a 2C Land Streamer System

Abstract

Summary Land streamers are often used for seismic surveys in urban areas and paved surfaces, where conventional spike geophones can not be planted. With development of shear-wave seismic methods, land streamers recording S-component also gained more importance. Due to their low velocity, shear-waves give us the opportunity to investigate the shallow (0-20 m) subsurface with high resolution, using the reflection seismic method. Worldwide published examples of land streamer surveys and a novel P- and S-wave vibroseis source for engineering applications initiated the development of a modular 2-C land streamer system. Our goal was to develop a seismic land streamer which enables fast data acquisition on varying surfaces for different types of data processing, such as multichannel analysis of surface waves, turning ray tomography, reflection and refraction processing. Several surveys were carried out with the newly developed land streamer in noisy urban areas, on paved surfaces in order to investigate the applicability of the instrument. P and SH waves were generated simultaneously and the recorded data were processed with different methods Real data example will be shown demonstrating the data quality and productivity of the developed 2-C land streamer.