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Author L. Gualtieri, E. Stutzmann, C. Juretzek, C. Hadziioannou, F. Ardhuin file  doi
isbn  openurl
  Title Global scale analysis and modelling of primary microseisms Type Journal
  Year (down) 2019 Publication Geophysical Journal International Abbreviated Journal  
  Volume 218 Issue 1 Pages 560-572  
  Keywords  
  Abstract Primary microseism is the less studied seismic background vibration of the Earth. Evidence points to sources caused by ocean gravity waves coupling with the seafloor topography. As a result, these sources should be in water depth smaller than the wavelength of ocean waves. Using a state-of-the-art ocean wave model, we carry out the first global-scale seismic modelling of the vertical-component power spectral density of primary microseisms. Our modelling allows us to infer that the observed weak seasonality of primary microseisms in the southern hemisphere corresponds to a weak local seasonality of the sources. Moreover, a systematic analysis of the source regions that mostly contribute to each station reveals that stations on both the east and west sides of the North Atlantic Ocean are sensitive to frequency-dependent source regions. At low frequency (i.e. 0.05 Hz), the dominant source regions can be located thousands of kilometres away from the stations. This observation suggests that identifying the source regions of primary microseisms at the closest coasts can be misleading.  
  Programme 133  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0956-540X ISBN 0956-540X Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7478  
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