Within a large academia-industry consortium we have developed a unique state-of-the-art consisting of 100-3C MEMs-based sensors seismic landstreamer for various near surface applications and particularly for urban underground infrastructure planning projects. The streamer has been tested and evaluated in several places against plant-type geophones and the same type MEMs sensors but planted and for the planning of several major tunnelling projects inside and outside Sweden. When compared to plant-type geophones in a highly electrical noisy environment, the streamer sensors illustrated their potentials in being uncontaminated and superior to its predecessor geophone-based streamers. Being GPS-time stamped and sampled, it allows the streamer data to be merged with wireless data operating in a passive mode further overcoming some of the challenges encountered in complex urban and geological environments. Here, we present the streamer and its characteristics and examples of data and results obtained from it. In particular, we present results from a survey comprising of 25 profiles of about 7.5 km long in total and a surface-tunnel experiment where the streamer data were crucial to recognize mode-converted signals from fracture systems intersected in the tunnel.


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