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Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis
Turbidity currents are the main drivers behind the transportation of terrestrial sediments to the deep sea, and turbidite deposits from such currents have been widely used in geological studies. Nevertheless, the contribution of turbidity currents to vertical displacement of seawater has rarely been...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7733332/ https://www.ncbi.nlm.nih.gov/pubmed/33354420 http://dx.doi.org/10.7717/peerj.10429 |
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author | Kawagucci, Shinsuke Miwa, Tetsuya Lindsay, Dhugal J. Ogura, Eri Yamamoto, Hiroyuki Nishibayashi, Kenichiro Yokooka, Hiroyuki Nishi, Shotaro Takahashi, Ayu Lee, Sangkyun |
author_facet | Kawagucci, Shinsuke Miwa, Tetsuya Lindsay, Dhugal J. Ogura, Eri Yamamoto, Hiroyuki Nishibayashi, Kenichiro Yokooka, Hiroyuki Nishi, Shotaro Takahashi, Ayu Lee, Sangkyun |
author_sort | Kawagucci, Shinsuke |
collection | PubMed |
description | Turbidity currents are the main drivers behind the transportation of terrestrial sediments to the deep sea, and turbidite deposits from such currents have been widely used in geological studies. Nevertheless, the contribution of turbidity currents to vertical displacement of seawater has rarely been discussed. This is partly because until recently, deep-sea turbidity currents have rarely been observed due to their unpredictable nature, being usually triggered by meteorological or geological events such as typhoons and earthquakes. Here, we report a direct observation of a deep-sea turbidity current using the recently developed Edokko Mark 1 monitoring system deployed in 2019 at a depth of 1,370 m in Suruga Bay, central Japan. A turbidity current occurred two days after its probable cause, the Super Typhoon Hagibis (2019), passed through Suruga Bay causing devastating damage. Over aperiod of 40 hours, we observed increased turbidity with turbulent conditions confirmed by a video camera. The turbidity exhibited two sharp peaks around 3:00 and 11:00 on October 14 (Japan Standard Time). The temperature and salinity characteristics during these high turbidity events agreed with independent measurements for shallow water layers in Suruga Bay at the same time, strongly suggesting that the turbidity current caused vertical displacement in the bay’s water column by transporting warmer and shallower waters downslope of the canyon. Our results add to the previous few examples that show meteorological and geological events may have significant contributions in the transportation of shallower seawater to the deep sea. Recent technological developments pertaining to the Edokko Mark 1 and similar devices enable straightforward, long-term monitoring of the deep-seafloor and will contribute to the understanding of similar spontaneous events in the deep ocean. |
format | Online Article Text |
id | pubmed-7733332 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-77333322020-12-21 Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis Kawagucci, Shinsuke Miwa, Tetsuya Lindsay, Dhugal J. Ogura, Eri Yamamoto, Hiroyuki Nishibayashi, Kenichiro Yokooka, Hiroyuki Nishi, Shotaro Takahashi, Ayu Lee, Sangkyun PeerJ Aquatic and Marine Chemistry Turbidity currents are the main drivers behind the transportation of terrestrial sediments to the deep sea, and turbidite deposits from such currents have been widely used in geological studies. Nevertheless, the contribution of turbidity currents to vertical displacement of seawater has rarely been discussed. This is partly because until recently, deep-sea turbidity currents have rarely been observed due to their unpredictable nature, being usually triggered by meteorological or geological events such as typhoons and earthquakes. Here, we report a direct observation of a deep-sea turbidity current using the recently developed Edokko Mark 1 monitoring system deployed in 2019 at a depth of 1,370 m in Suruga Bay, central Japan. A turbidity current occurred two days after its probable cause, the Super Typhoon Hagibis (2019), passed through Suruga Bay causing devastating damage. Over aperiod of 40 hours, we observed increased turbidity with turbulent conditions confirmed by a video camera. The turbidity exhibited two sharp peaks around 3:00 and 11:00 on October 14 (Japan Standard Time). The temperature and salinity characteristics during these high turbidity events agreed with independent measurements for shallow water layers in Suruga Bay at the same time, strongly suggesting that the turbidity current caused vertical displacement in the bay’s water column by transporting warmer and shallower waters downslope of the canyon. Our results add to the previous few examples that show meteorological and geological events may have significant contributions in the transportation of shallower seawater to the deep sea. Recent technological developments pertaining to the Edokko Mark 1 and similar devices enable straightforward, long-term monitoring of the deep-seafloor and will contribute to the understanding of similar spontaneous events in the deep ocean. PeerJ Inc. 2020-12-09 /pmc/articles/PMC7733332/ /pubmed/33354420 http://dx.doi.org/10.7717/peerj.10429 Text en ©2020 Kawagucci et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Aquatic and Marine Chemistry Kawagucci, Shinsuke Miwa, Tetsuya Lindsay, Dhugal J. Ogura, Eri Yamamoto, Hiroyuki Nishibayashi, Kenichiro Yokooka, Hiroyuki Nishi, Shotaro Takahashi, Ayu Lee, Sangkyun Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis |
title | Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis |
title_full | Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis |
title_fullStr | Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis |
title_full_unstemmed | Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis |
title_short | Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis |
title_sort | deep-sea water displacement from a turbidity current induced by the super typhoon hagibis |
topic | Aquatic and Marine Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7733332/ https://www.ncbi.nlm.nih.gov/pubmed/33354420 http://dx.doi.org/10.7717/peerj.10429 |
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