Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments
Abstract Hokkaido Island in northern Japan is located at the intersection of the Kuril and Northeast Japan arcs. Eastern Hokkaido represents the southwestern margin of the Kuril arc that evolved as an oceanic island arc, but its crustal structure has remained unclarified. In the summer of 2000, a hi...
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crspringernat:10.1186/bf03352697 2023-05-15T17:52:40+02:00 Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments Kurashimo, Eiji Iwasaki, Takaya Hirata, Naoshi Ito, Tanio Kaneda, Yoshiyuki 2007 http://dx.doi.org/10.1186/bf03352697 https://link.springer.com/content/pdf/10.1186/BF03352697.pdf https://link.springer.com/article/10.1186/BF03352697/fulltext.html http://link.springer.com/content/pdf/10.1186/BF03352697 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ CC-BY Earth, Planets and Space volume 59, issue 5, page 375-380 ISSN 1880-5981 Space and Planetary Science Geology journal-article 2007 crspringernat https://doi.org/10.1186/bf03352697 2022-01-04T14:03:38Z Abstract Hokkaido Island in northern Japan is located at the intersection of the Kuril and Northeast Japan arcs. Eastern Hokkaido represents the southwestern margin of the Kuril arc that evolved as an oceanic island arc, but its crustal structure has remained unclarified. In the summer of 2000, a highly dense onshore-offshore integrated seismic experiment was conducted in order to reveal the entire crustal section covering from the Kuril Trench to the back-arc basin of the Okhotsk Sea crossing eastern Hokkaido. High-quality refraction/wide-angle reflection data collected for the onshore survey line delineated a detailed crustal structure of easternmost part of Hokkaido Island. Our seismic velocity model shows a good correlation with the surface geology along the profile. The notable feature of the velocity model is the existence of a 6.0-km/s layer beneath the onshore survey line. A reflective middle to lower crust is also found beneath eastern Hokkaido. These results indicate that the southwestern margin of the Kuril arc is in a matured state of oceanic island-arc crust. Article in Journal/Newspaper okhotsk sea Springer Nature (via Crossref) Okhotsk Earth, Planets and Space 59 5 375 380 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
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English |
topic |
Space and Planetary Science Geology |
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Space and Planetary Science Geology Kurashimo, Eiji Iwasaki, Takaya Hirata, Naoshi Ito, Tanio Kaneda, Yoshiyuki Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments |
topic_facet |
Space and Planetary Science Geology |
description |
Abstract Hokkaido Island in northern Japan is located at the intersection of the Kuril and Northeast Japan arcs. Eastern Hokkaido represents the southwestern margin of the Kuril arc that evolved as an oceanic island arc, but its crustal structure has remained unclarified. In the summer of 2000, a highly dense onshore-offshore integrated seismic experiment was conducted in order to reveal the entire crustal section covering from the Kuril Trench to the back-arc basin of the Okhotsk Sea crossing eastern Hokkaido. High-quality refraction/wide-angle reflection data collected for the onshore survey line delineated a detailed crustal structure of easternmost part of Hokkaido Island. Our seismic velocity model shows a good correlation with the surface geology along the profile. The notable feature of the velocity model is the existence of a 6.0-km/s layer beneath the onshore survey line. A reflective middle to lower crust is also found beneath eastern Hokkaido. These results indicate that the southwestern margin of the Kuril arc is in a matured state of oceanic island-arc crust. |
format |
Article in Journal/Newspaper |
author |
Kurashimo, Eiji Iwasaki, Takaya Hirata, Naoshi Ito, Tanio Kaneda, Yoshiyuki |
author_facet |
Kurashimo, Eiji Iwasaki, Takaya Hirata, Naoshi Ito, Tanio Kaneda, Yoshiyuki |
author_sort |
Kurashimo, Eiji |
title |
Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments |
title_short |
Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments |
title_full |
Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments |
title_fullStr |
Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments |
title_full_unstemmed |
Crustal structure of the southwestern margin of the Kuril arc sited in the eastern part of Hokkaido, Japan, inferred from seismic refraction/reflection experiments |
title_sort |
crustal structure of the southwestern margin of the kuril arc sited in the eastern part of hokkaido, japan, inferred from seismic refraction/reflection experiments |
publisher |
Springer Science and Business Media LLC |
publishDate |
2007 |
url |
http://dx.doi.org/10.1186/bf03352697 https://link.springer.com/content/pdf/10.1186/BF03352697.pdf https://link.springer.com/article/10.1186/BF03352697/fulltext.html http://link.springer.com/content/pdf/10.1186/BF03352697 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea |
genre_facet |
okhotsk sea |
op_source |
Earth, Planets and Space volume 59, issue 5, page 375-380 ISSN 1880-5981 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1186/bf03352697 |
container_title |
Earth, Planets and Space |
container_volume |
59 |
container_issue |
5 |
container_start_page |
375 |
op_container_end_page |
380 |
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1766160368202153984 |