Simultaneous seismic reflection and physical oceanographic observations of oceanic fine structure in the Kuroshio extension front

Y. Nakamura, T. Noguchi, T. Tsuji, S. Itoh, H. Niino, T. Matsuoka

研究成果: Contribution to journalArticle査読

50 被引用数 (Scopus)

抄録

New simultaneous seismic reflection and physical oceanographic observations east of Japan demonstrate the utility of the seismic reflection method in mapping oceanic fine structure. Synthetic seismograms calculated from temperature and salinity data confirm that seismic reflections correlate with physical oceanographic structures. Seismic reflections at the boundary between the warm Kuroshio and the cold Oyashio water masses correspond to well developed, ∼10 m scale, temperature fine structure. Vertical current profiles suggest that this fine structure is caused by interleaving of these two water masses. We compare our seismic images with acoustic Doppler current profiler (ADCP) intensity maps and discuss similarities and the differences between seismic images and the ADCP maps. Our study demonstrates that even relatively low-energy seismic sources, in this case a 3.4 1 (210 in3) generator-injector (GI) airgun, can be used to image upper oceanic fine structure.

本文言語英語
論文番号L23605
ジャーナルGeophysical Research Letters
33
23
DOI
出版ステータス出版済み - 12 16 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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