Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin”
In the IODP 372A proposal, working hypotheses used with respect to actively deforming gas hydrate‐bearing landslides were based on an initial calculation considering gas hydrate to occur in fresh water. This initial inaccuracy leads to predict the base of methane hydrate stability zone (MHSZ) to be...
Published in: | Geochemistry, Geophysics, Geosystems |
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Online Access: | https://hal.science/hal-04203161 https://doi.org/10.1029/2019GC008846 |
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ftccsdartic:oai:HAL:hal-04203161v1 2023-10-09T21:53:31+02:00 Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” Sultan, Nabil Laboratoire Aléas géologiques et Dynamique sédimentaire (LAD) Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2020-06 https://hal.science/hal-04203161 https://doi.org/10.1029/2019GC008846 en eng HAL CCSD AGU and the Geochemical Society info:eu-repo/semantics/altIdentifier/doi/10.1029/2019GC008846 hal-04203161 https://hal.science/hal-04203161 doi:10.1029/2019GC008846 ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-04203161 Geochemistry, Geophysics, Geosystems, 2020, 21 (6), e2019GC008846 (4p.). ⟨10.1029/2019GC008846⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.1029/2019GC008846 2023-09-23T22:53:37Z In the IODP 372A proposal, working hypotheses used with respect to actively deforming gas hydrate‐bearing landslides were based on an initial calculation considering gas hydrate to occur in fresh water. This initial inaccuracy leads to predict the base of methane hydrate stability zone (MHSZ) to be at around 162 meters below the seafloor (mbsf) at site U1517 while it is expected to be between 85 and 128 mbsf. It is most interesting that important negative chloride anomalies were measured well below the theoretical MHSZ without direct evidence of the presence of gas hydrate. These anomalies are usually a strong indication of gas hydrate occurrence. This initial inaccurate hypothesis provides the opportunity to evaluate the effectiveness of the indirect salinity detection method to quantify gas hydrate. Article in Journal/Newspaper Methane hydrate Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Geochemistry, Geophysics, Geosystems 21 6 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
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[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Sultan, Nabil Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
In the IODP 372A proposal, working hypotheses used with respect to actively deforming gas hydrate‐bearing landslides were based on an initial calculation considering gas hydrate to occur in fresh water. This initial inaccuracy leads to predict the base of methane hydrate stability zone (MHSZ) to be at around 162 meters below the seafloor (mbsf) at site U1517 while it is expected to be between 85 and 128 mbsf. It is most interesting that important negative chloride anomalies were measured well below the theoretical MHSZ without direct evidence of the presence of gas hydrate. These anomalies are usually a strong indication of gas hydrate occurrence. This initial inaccurate hypothesis provides the opportunity to evaluate the effectiveness of the indirect salinity detection method to quantify gas hydrate. |
author2 |
Laboratoire Aléas géologiques et Dynamique sédimentaire (LAD) Géosciences Marines (GM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Sultan, Nabil |
author_facet |
Sultan, Nabil |
author_sort |
Sultan, Nabil |
title |
Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” |
title_short |
Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” |
title_full |
Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” |
title_fullStr |
Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” |
title_full_unstemmed |
Comment on “Sedimentation Controls on Methane‐Hydrate Dynamics Across Glacial/Interglacial Stages: An Example From International Ocean Discovery Program Site U1517, Hikurangi Margin” |
title_sort |
comment on “sedimentation controls on methane‐hydrate dynamics across glacial/interglacial stages: an example from international ocean discovery program site u1517, hikurangi margin” |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-04203161 https://doi.org/10.1029/2019GC008846 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
ISSN: 1525-2027 EISSN: 1525-2027 Geochemistry, Geophysics, Geosystems https://hal.science/hal-04203161 Geochemistry, Geophysics, Geosystems, 2020, 21 (6), e2019GC008846 (4p.). ⟨10.1029/2019GC008846⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2019GC008846 hal-04203161 https://hal.science/hal-04203161 doi:10.1029/2019GC008846 |
op_doi |
https://doi.org/10.1029/2019GC008846 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
21 |
container_issue |
6 |
_version_ |
1779316807548534784 |