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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2013
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.819521 |
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| _version_ | 1867167670883844096 |
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| author | Strasser, Michael Kölling, Martin dos Santos Ferreira, Christian Fink, Hiske G Fujiwara, Toshiya Henkel, Susann Ikehara, Ken Kanamatsu, Toshiya Kawamura, Kiichiro Kodaira, Shuichi Römer, Miriam Wefer, Gerold R/V Sonne Cruise SO219A scientists JAMSTEC Cruise MR12-E01 scientists |
| author_facet | Strasser, Michael Kölling, Martin dos Santos Ferreira, Christian Fink, Hiske G Fujiwara, Toshiya Henkel, Susann Ikehara, Ken Kanamatsu, Toshiya Kawamura, Kiichiro Kodaira, Shuichi Römer, Miriam Wefer, Gerold R/V Sonne Cruise SO219A scientists JAMSTEC Cruise MR12-E01 scientists |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We present differential bathymetry and sediment core data from the Japan Trench, sampled after the 2011 Tohoku-Oki (offshore Japan) earthquake to document that prominent bathymetric and structural changes along the trench axis relate to a large (~27.7 km**2) slump in the trench. Transient geochemical signals in the slump deposit and analysis of diffusive re-equilibration of disturbed SO4**2- profiles over time constrain the triggering of the slump to the 2011 earthquake. We propose a causal link between earthquake slip to the trench and rotational slumping above a subducting horst structure. We conclude that the earthquake-triggered slump is a leading agent for accretion of trench sediments into the forearc and hypothesize that forward growth of the prism and seaward advance of the deformation front by more than 2 km can occur, episodically, during a single-event, large mega-thrust earthquake. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_819521 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Physical properties, pore water geochemistry, 210Pb-dating of sediment cores GeoB16426-1, GeoB16427-1, GeoB16429-1 Strasser, Michael Kölling, Martin dos Santos Ferreira, Christian Fink, Hiske G Fujiwara, Toshiya Henkel, Susann Ikehara, Ken Kanamatsu, Toshiya Kawamura, Kiichiro Kodaira, Shuichi Römer, Miriam Wefer, Gerold R/V Sonne Cruise SO219A scientists JAMSTEC Cruise MR12-E01 scientists Center for Marine Environmental Sciences; MARUM We present differential bathymetry and sediment core data from the Japan Trench, sampled after the 2011 Tohoku-Oki (offshore Japan) earthquake to document that prominent bathymetric and structural changes along the trench axis relate to a large (~27.7 km**2) slump in the trench. Transient geochemical signals in the slump deposit and analysis of diffusive re-equilibration of disturbed SO4**2- profiles over time constrain the triggering of the slump to the 2011 earthquake. We propose a causal link between earthquake slip to the trench and rotational slumping above a subducting horst structure. We conclude that the earthquake-triggered slump is a leading agent for accretion of trench sediments into the forearc and hypothesize that forward growth of the prism and seaward advance of the deformation front by more than 2 km can occur, episodically, during a single-event, large mega-thrust earthquake. |
| title | Physical properties, pore water geochemistry, 210Pb-dating of sediment cores GeoB16426-1, GeoB16427-1, GeoB16429-1 |
| topic | Center for Marine Environmental Sciences; MARUM |
| url | https://doi.org/10.1594/PANGAEA.819521 |