FN Archimer Export Format
PT J
TI Global scale analysis and modeling of primary microseisms
BT 
AF Gualtieri, L
   Stutzmann, E
   Juretzek, C
   Hadziioannou, C
   ARDHUIN, Fabrice
AS 1:1;2:2;3:3,4;4:3;5:5;
FF 1:;2:;3:;4:;5:;
C1 Princeton University, Department of Geosciences, Guyot Hall, Princeton, NJ 08540, USA
   Institut de Physique du Globe de Paris, 1 Rue Jussieu, 75005, Paris, France
   Institute of Geophysics, Center for Earth System Research and Sustainability (CEN), Universität Hamburg, D-20146 Hamburg, Germany
   Department of Earth and Environmental Sciences, Ludwig Maximilian University of Munich, D-80333 Munich, Germany
   Univ. Brest, CNRS, Ifremer, IRD, Laboratoire d’Océanographie Physique et Spatiale (LOPS), IUEM, Brest, France
C2 UNIV PRINCETON, USA
   IPGP, FRANCE
   UNIV HAMBURG, GERMANY
   UNIV MUNICH, GERMANY
   CNRS, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   copubli-france
   copubli-europe
   copubli-int-hors-europe
IF 2.574
TC 14
UR https://archimer.ifremer.fr/doc/00487/59842/62990.pdf
   https://archimer.ifremer.fr/doc/00487/59842/62991.pdf
LA English
DT Article
DE ;Numerical modelling;Computational seismology;Seismic noise;Theoretical Seismology
AB 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 modeling of the vertical-component power spectral density of primary microseisms. Our modeling 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 kilometers away from the stations. This observation suggests that identifying the source regions of primary microseisms as the closest coasts can be misleading. 
PY 2019
PD JUN
SO Geophysical Journal International
SN 0956-540X
PU Oxford University Press (OUP)
VL 218
IS 1
UT 000470320500034
BP 560
EP 572
DI 10.1093/gji/ggz161
ID 59842
ER

EF