Aarhus Universitets segl


Our land seismic acquisition equipment includes a vibrator of the type IVI MiniVib with a 200 m long receiver cable towed after the vehicle. Recently we have also developed a module based receiver cable allowing for more flexible acquisition. Our portfolio sums up to ca. 300 km of vibro-seismic data, including data from ice-covered terrain. We furthermore have small refraction seismic equipment which mainly is used for teaching purposes.

Concerning marine seismic acquisition equipment, we currently apply both 2D and 3D seismic systems. We primarily work with airgun and sparker sources in both 2D and 3D setups. For 2D seismic acquisition we normally deploy a 600 m long multichannel streamer combined with both sparker and airgun sources (Nørmark et al., 2014). Single-channel streamer data are also acquired occasionally. We have many years of experience with 2D seismic acquisition and has acquired around 60.000 km of marine seismic data – hereof ca. 2350 km in ice-filled waters (evt link til pdf af folder vedr indsamling af seismik i isfyldte farvande, evt link til artikel 76 arbejdet (kontinetalsokkelprojektet) http://a76.dk/index.shtml).

Our 3D seismic acquisition system utilizes the P-cable design (Planke et al., 2009) and consists of 8 short streamers attached to a cross-cable and an airgun and/or sparker source. In 2017, the first 3D seismic airgun cubes were acquired in the inner Danish waters (e.g. Nørmark et al. 2018), and we are currently optimizing the system for high-resolution sparker seismic with 8 short streamers. With the system we can acquire high-resolution 3D seismic data optimized to shallow water settings (<100 m water depth).

Our other marine acoustic systems include multibeam echosounding (MBES), side scan sonar (SSS), and sediment echosounding (SES) permanently installed on Aarhus University’s research vessel Aurora, which we use for our offshore teaching courses and specific research cruises.

Our vision is to provide unique, special-tailored and novel high-resolution seismic and acoustic data sets with 2D and 3D seismic data acquired simultaneously with detailed seafloor and sediment echosounding mapping to allow for cutting-edge research and world-class hands-on training for our students.