Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths
Hadal, > 6000 m deep shipborne Sea-Bird Electronics SBE 911plus Conductivity Temperature Depth (CTD) data are obtained using two different systems in the vicinity of the Earth’s deepest point, in the Challenger Deep, Mariana Trench 14 years apart. Below 7000 m in very weakly density stratified wa...
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Language: | English |
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ftnioz:oai:imis.nioz.nl:330993 2023-05-15T13:47:57+02:00 Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths van Haren, H. Uchida, H. Yanagimoto, D. 2021 application/pdf https://www.vliz.be/imisdocs/publications/03/358103.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000567763300001 info:eu-repo/semantics/altIdentifier/doi/.org/10.1007/s10872-020-00565-3 https://www.vliz.be/imisdocs/publications/03/358103.pdf info:eu-repo/semantics/openAccess %3Ci%3EJ.+Oceanogr.+77%3C%2Fi%3E%3A+137-144.+%3Ca+href%3D%22https%3A%2F%2Fdoi.org%2F10.1007%2Fs10872-020-00565-3%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdoi.org%2F10.1007%2Fs10872-020-00565-3%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftnioz https://doi.org/10.1007/s10872-020-00565-3 2022-05-01T14:12:59Z Hadal, > 6000 m deep shipborne Sea-Bird Electronics SBE 911plus Conductivity Temperature Depth (CTD) data are obtained using two different systems in the vicinity of the Earth’s deepest point, in the Challenger Deep, Mariana Trench 14 years apart. Below 7000 m in very weakly density stratified waters, the salinity data from both sets show an artificial increase with depth of about 10 –6 g kg −1 m −1 that is not covered by the SBE linear pressure correction to the conductivity data. With the aid of independent water sample data, salinity is corrected and an additional algorithm for the pressure correction on conductivity data is formulated. The corrected salinity data still weakly increase with depth, together with a decrease in temperature, which may point at an influx of dense modified Antarctic bottom water. The corrected density variations with depth are used in calculations of deep turbulence values. Article in Journal/Newspaper Antarc* Antarctic NIOZ Repository (Royal Netherlands Institute for Sea Research) Antarctic Journal of Oceanography 77 1 137 144 |
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Open Polar |
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NIOZ Repository (Royal Netherlands Institute for Sea Research) |
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ftnioz |
language |
English |
description |
Hadal, > 6000 m deep shipborne Sea-Bird Electronics SBE 911plus Conductivity Temperature Depth (CTD) data are obtained using two different systems in the vicinity of the Earth’s deepest point, in the Challenger Deep, Mariana Trench 14 years apart. Below 7000 m in very weakly density stratified waters, the salinity data from both sets show an artificial increase with depth of about 10 –6 g kg −1 m −1 that is not covered by the SBE linear pressure correction to the conductivity data. With the aid of independent water sample data, salinity is corrected and an additional algorithm for the pressure correction on conductivity data is formulated. The corrected salinity data still weakly increase with depth, together with a decrease in temperature, which may point at an influx of dense modified Antarctic bottom water. The corrected density variations with depth are used in calculations of deep turbulence values. |
format |
Article in Journal/Newspaper |
author |
van Haren, H. Uchida, H. Yanagimoto, D. |
spellingShingle |
van Haren, H. Uchida, H. Yanagimoto, D. Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths |
author_facet |
van Haren, H. Uchida, H. Yanagimoto, D. |
author_sort |
van Haren, H. |
title |
Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths |
title_short |
Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths |
title_full |
Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths |
title_fullStr |
Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths |
title_full_unstemmed |
Further correcting pressure effects on SBE911 CTD-conductivity data from hadal depths |
title_sort |
further correcting pressure effects on sbe911 ctd-conductivity data from hadal depths |
publishDate |
2021 |
url |
https://www.vliz.be/imisdocs/publications/03/358103.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
%3Ci%3EJ.+Oceanogr.+77%3C%2Fi%3E%3A+137-144.+%3Ca+href%3D%22https%3A%2F%2Fdoi.org%2F10.1007%2Fs10872-020-00565-3%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdoi.org%2F10.1007%2Fs10872-020-00565-3%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000567763300001 info:eu-repo/semantics/altIdentifier/doi/.org/10.1007/s10872-020-00565-3 https://www.vliz.be/imisdocs/publications/03/358103.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10872-020-00565-3 |
container_title |
Journal of Oceanography |
container_volume |
77 |
container_issue |
1 |
container_start_page |
137 |
op_container_end_page |
144 |
_version_ |
1766248058162511872 |