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

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

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article numberL23605
JournalGeophysical Research Letters
Volume33
Issue number23
DOIs
Publication statusPublished - Dec 16 2006
Externally publishedYes

Fingerprint

seismic reflection
fine structure
Acoustic Doppler Current Profiler
water mass
cold water
seismic energy
temperature scales
acoustics
synthetic seismogram
seismograms
seismic source
salinity
injectors
Japan
generators
temperature
profiles
water
energy

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Simultaneous seismic reflection and physical oceanographic observations of oceanic fine structure in the Kuroshio extension front. / Nakamura, Y.; Noguchi, T.; Tsuji, Takeshi; Itoh, S.; Niino, H.; Matsuoka, T.

In: Geophysical Research Letters, Vol. 33, No. 23, L23605, 16.12.2006.

Research output: Contribution to journalArticle

@article{0b164ee59e3340d3864929d3c46d15da,
title = "Simultaneous seismic reflection and physical oceanographic observations of oceanic fine structure in the Kuroshio extension front",
abstract = "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.",
author = "Y. Nakamura and T. Noguchi and Takeshi Tsuji and S. Itoh and H. Niino and T. Matsuoka",
year = "2006",
month = "12",
day = "16",
doi = "10.1029/2006GL027437",
language = "English",
volume = "33",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "23",

}

TY - JOUR

T1 - Simultaneous seismic reflection and physical oceanographic observations of oceanic fine structure in the Kuroshio extension front

AU - Nakamura, Y.

AU - Noguchi, T.

AU - Tsuji, Takeshi

AU - Itoh, S.

AU - Niino, H.

AU - Matsuoka, T.

PY - 2006/12/16

Y1 - 2006/12/16

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=34548639940&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548639940&partnerID=8YFLogxK

U2 - 10.1029/2006GL027437

DO - 10.1029/2006GL027437

M3 - Article

AN - SCOPUS:34548639940

VL - 33

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 23

M1 - L23605

ER -