Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles
International audience [1] The depth-scale accuracy of marine sedimentary series collected by coring is of key importance for the precise calculation of sedimentation rates and fluxes. For three giant piston cores collected during the InterPole MD99-114/International Marine Past Global Changes Study...
Published in: | Paleoceanography |
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Main Authors: | , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2004
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Online Access: | https://hal.archives-ouvertes.fr/hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012/document https://hal.archives-ouvertes.fr/hal-02959012/file/2002PA000795.pdf https://doi.org/10.1029/2002PA000795 |
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INDEX TERMS: 1635 Global Change: Oceans (4203) 4259 Oceanography: General: Ocean acoustics 4294 Oceanography: General: Instruments and techniques KEYWORDS: correction of coring-induced sediment oversampling giant piston coring IMAGES cores North Atlantic Citation: Széréméta N F Bassinot Y Balut L Labeyrie and M Pagel (2004) [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
INDEX TERMS: 1635 Global Change: Oceans (4203) 4259 Oceanography: General: Ocean acoustics 4294 Oceanography: General: Instruments and techniques KEYWORDS: correction of coring-induced sediment oversampling giant piston coring IMAGES cores North Atlantic Citation: Széréméta N F Bassinot Y Balut L Labeyrie and M Pagel (2004) [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Széréméta, Nadia Bassinot, Franck Balut, Yvon Labeyrie, Laurent Pagel, Maurice Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles |
topic_facet |
INDEX TERMS: 1635 Global Change: Oceans (4203) 4259 Oceanography: General: Ocean acoustics 4294 Oceanography: General: Instruments and techniques KEYWORDS: correction of coring-induced sediment oversampling giant piston coring IMAGES cores North Atlantic Citation: Széréméta N F Bassinot Y Balut L Labeyrie and M Pagel (2004) [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience [1] The depth-scale accuracy of marine sedimentary series collected by coring is of key importance for the precise calculation of sedimentation rates and fluxes. For three giant piston cores collected during the InterPole MD99-114/International Marine Past Global Changes Study (IMAGES) V cruise (MD99-2227, MD99-2246, and MD99-2251), the 3.5-kHz chirp profiles recorded on board are compared to synthetic seismograms computed from physical property logs measured on cores. In each case, the perfect match of main deep reflectors requires a significant upward shift of the water-sediment (W/S) interface in the synthetic seismograms with respect to the 3.5-kHz profiles. Since no drastic perturbation of the physical property logs is observed, this upward shift is interpreted as resulting from a significant sediment oversampling in the upper part of the cores. The affected depth intervals are consistent with the thickness of the perturbed zones observed in penetrometry and anisotropy of magnetic susceptibility records ($10-15 m). To retrieve the true in situ sediment thickness, a linear depth correction is applied between consecutive acoustic reflectors to achieve a perfect match between the synthetic seismogram and the corresponding 3.5-kHz profiles. Depth correction laws (amount of material excess as a function of initial depth) are deduced from this resynchronization procedure. First estimations of upper core oversampling rates range from 30% (core MD99-2227) to 37% (core MD99-2246). Moreover, we observe that some undersampling may also exist in the lower part of the sediment cores. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Climat et Magnétisme (CLIMAG) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) L'Institut polaire français Paul-Emile Victor (IPEV) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) |
format |
Article in Journal/Newspaper |
author |
Széréméta, Nadia Bassinot, Franck Balut, Yvon Labeyrie, Laurent Pagel, Maurice |
author_facet |
Széréméta, Nadia Bassinot, Franck Balut, Yvon Labeyrie, Laurent Pagel, Maurice |
author_sort |
Széréméta, Nadia |
title |
Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles |
title_short |
Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles |
title_full |
Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles |
title_fullStr |
Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles |
title_full_unstemmed |
Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles |
title_sort |
oversampling of sedimentary series collected by giant piston corer: evidence and corrections based on 3.5-khz chirp profiles |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.archives-ouvertes.fr/hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012/document https://hal.archives-ouvertes.fr/hal-02959012/file/2002PA000795.pdf https://doi.org/10.1029/2002PA000795 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0883-8305 Paleoceanography https://hal.archives-ouvertes.fr/hal-02959012 Paleoceanography, American Geophysical Union, 2004, 19 (1), pp.n/a-n/a. ⟨10.1029/2002PA000795⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2002PA000795 hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012/document https://hal.archives-ouvertes.fr/hal-02959012/file/2002PA000795.pdf doi:10.1029/2002PA000795 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2002PA000795 |
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Paleoceanography |
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19 |
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1 |
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ftccsdartic:oai:HAL:hal-02959012v1 2023-05-15T17:36:13+02:00 Oversampling of sedimentary series collected by giant piston corer: Evidence and corrections based on 3.5-kHz chirp profiles Széréméta, Nadia Bassinot, Franck Balut, Yvon Labeyrie, Laurent Pagel, Maurice Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Climat et Magnétisme (CLIMAG) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) L'Institut polaire français Paul-Emile Victor (IPEV) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) 2004-03 https://hal.archives-ouvertes.fr/hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012/document https://hal.archives-ouvertes.fr/hal-02959012/file/2002PA000795.pdf https://doi.org/10.1029/2002PA000795 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2002PA000795 hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012 https://hal.archives-ouvertes.fr/hal-02959012/document https://hal.archives-ouvertes.fr/hal-02959012/file/2002PA000795.pdf doi:10.1029/2002PA000795 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.archives-ouvertes.fr/hal-02959012 Paleoceanography, American Geophysical Union, 2004, 19 (1), pp.n/a-n/a. ⟨10.1029/2002PA000795⟩ INDEX TERMS: 1635 Global Change: Oceans (4203) 4259 Oceanography: General: Ocean acoustics 4294 Oceanography: General: Instruments and techniques KEYWORDS: correction of coring-induced sediment oversampling giant piston coring IMAGES cores North Atlantic Citation: Széréméta N F Bassinot Y Balut L Labeyrie and M Pagel (2004) [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2004 ftccsdartic https://doi.org/10.1029/2002PA000795 2021-12-19T00:52:11Z International audience [1] The depth-scale accuracy of marine sedimentary series collected by coring is of key importance for the precise calculation of sedimentation rates and fluxes. For three giant piston cores collected during the InterPole MD99-114/International Marine Past Global Changes Study (IMAGES) V cruise (MD99-2227, MD99-2246, and MD99-2251), the 3.5-kHz chirp profiles recorded on board are compared to synthetic seismograms computed from physical property logs measured on cores. In each case, the perfect match of main deep reflectors requires a significant upward shift of the water-sediment (W/S) interface in the synthetic seismograms with respect to the 3.5-kHz profiles. Since no drastic perturbation of the physical property logs is observed, this upward shift is interpreted as resulting from a significant sediment oversampling in the upper part of the cores. The affected depth intervals are consistent with the thickness of the perturbed zones observed in penetrometry and anisotropy of magnetic susceptibility records ($10-15 m). To retrieve the true in situ sediment thickness, a linear depth correction is applied between consecutive acoustic reflectors to achieve a perfect match between the synthetic seismogram and the corresponding 3.5-kHz profiles. Depth correction laws (amount of material excess as a function of initial depth) are deduced from this resynchronization procedure. First estimations of upper core oversampling rates range from 30% (core MD99-2227) to 37% (core MD99-2246). Moreover, we observe that some undersampling may also exist in the lower part of the sediment cores. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Paleoceanography 19 1 n/a n/a |