A seismic field test with a Low-level Acoustic Combustion Source and Pseudo-Noise codes |
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| Authors: | Bjørn Askeland Bent Ole Ruud Halvor Hobæk Rolf Mjelde |
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| Institution: | 1. Department of Physics and Technology, Allégt. 55, University of Bergen, 5007 Bergen, Norway;2. Department of Earth Science, Allégt. 41, University of Bergen, 5007 Bergen, Norway;1. College of Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China;2. College of Bioscience and Bioengineering, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China;3. Optics-Electrics Application of Biomaterials Lab, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China 330045, China;1. Escuela Politécnica Superior, Universidad Antonio de Nebrija, C. Pirineos 55, Madrid, Spain;2. Department of Electronic Engineering, University of Rome “Tor Vergata”, Rome, Italy;1. Department of Mathematics, University of Michigan, East Hall 530 Church Street, Ann Arbor, MI 48109, USA;2. Mathematisches Institut, Universität Basel, Rheinsprung 21, 4051 Basel, Switzerland |
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| Abstract: | The Low-level Acoustic Combustion Source (LACS) which can fire its pulses at a high rate, has been tested successfully as a seismic marine source on shallow ice-age sediments in Byfjorden at Bergen, Norway. Pseudo-Noise pulsed signals with spiky autocorrelation functions were used to detect the sediments. Each transmitted sequence lasted 10 s and contained 43 pulses. While correlation gave a blurry result, deconvolution between the near-field recordings and the streamer recordings gave a clear seismic section. Compared to the section acquired with single air-gun shots along the same profile, the LACS gave a more clear presentation of the sediments and basement. |
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