Physics
Scientific paper
Aug 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3715301z&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 15, CiteID L15301
Physics
4
Seismology: Body Waves, Oceanography: Physical: Air/Sea Interactions (0312, 3339), Atmospheric Processes: Ocean/Atmosphere Interactions (0312, 4504)
Scientific paper
Nonlinear wave-wave interactions generate double-frequency (DF) microseisms, which include both surface waves (mainly Rayleigh-type) and compressional (P) waves. Although it is unclear whether DF surface waves generated in deep oceans are observed on land, we show that beamforming of land-based seismic array data allows detection of DF P waves generated by ocean waves from Super Typhoon Ioke in both pelagic and coastal regions. Two distinct spectral bands associated with different P-wave source locations are observed. The short-period DF band (0.16-0.35 Hz) is dominated by P waves generated in the deep ocean by local wind seas under the storm. In contrast, P waves in the long-period DF band (0.1-0.15 Hz) are weaker and generated closer to the coast of Japan from swell interactions. The accurate identification of DF P-wave microseism source areas is useful to monitor ocean wave-wave interactions due to tropical cyclones and to image Earth structure using ambient seismic noise.
Bromirski Peter D.
Gerstoft Peter
Zhang Jian
No associations
LandOfFree
Pelagic and coastal sources of P-wave microseisms: Generation under tropical cyclones does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Pelagic and coastal sources of P-wave microseisms: Generation under tropical cyclones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pelagic and coastal sources of P-wave microseisms: Generation under tropical cyclones will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-980196