Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean
The deep oceans play a crucial role in regulating the Earth’s climate on long timescales by exchanging heat and chemical compounds with the atmosphere and moving them globally. However, our knowledge about deep circulation is in the initial stage. For instance, twenty years ago, in the Madagascar Ba...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5021546 2023-07-30T03:59:14+02:00 Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean Menezes, V. Furey, H. Bower, A. Mazloff, M. 2023-07-11 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021546 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-4107 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021546 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-4107 2023-07-09T23:40:20Z The deep oceans play a crucial role in regulating the Earth’s climate on long timescales by exchanging heat and chemical compounds with the atmosphere and moving them globally. However, our knowledge about deep circulation is in the initial stage. For instance, twenty years ago, in the Madagascar Basin, chlorofluorocarbons (CFCs) concentration in the Antarctic Bottom Water (AABW) layer was insignificant. But newer measurements in 2018 revealed an increased concentration of these chemical compounds, which counters our previous knowledge. A possible explanation is that deep currents, as we understood them, may have changed course and strength in the last twenty years. To begin solving this puzzle, we put together the 2019 DMB Experiment, a project funded by the US National Science Foundation and endorsed by the International Indian Ocean Expedition. The project aims to measure the deep currents in this region for the first time using shipboard instruments, RAFOS, and deep Argo floats. Combining the novel measurements with computer simulations, the study will identify the pathways that deep waters travel in the Madagascar Basin and examine what causes such circulation patterns. Due to COVID-19, our cruise has been on hold since 2020. After four years of waiting, we are sailing from South Africa to Mauritius in April-May this year. In this talk, we will present the first results of the fieldwork component of this project. Conference Object Antarc* Antarctic GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Antarctic Indian The Antarctic |
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GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
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ftgfzpotsdam |
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English |
description |
The deep oceans play a crucial role in regulating the Earth’s climate on long timescales by exchanging heat and chemical compounds with the atmosphere and moving them globally. However, our knowledge about deep circulation is in the initial stage. For instance, twenty years ago, in the Madagascar Basin, chlorofluorocarbons (CFCs) concentration in the Antarctic Bottom Water (AABW) layer was insignificant. But newer measurements in 2018 revealed an increased concentration of these chemical compounds, which counters our previous knowledge. A possible explanation is that deep currents, as we understood them, may have changed course and strength in the last twenty years. To begin solving this puzzle, we put together the 2019 DMB Experiment, a project funded by the US National Science Foundation and endorsed by the International Indian Ocean Expedition. The project aims to measure the deep currents in this region for the first time using shipboard instruments, RAFOS, and deep Argo floats. Combining the novel measurements with computer simulations, the study will identify the pathways that deep waters travel in the Madagascar Basin and examine what causes such circulation patterns. Due to COVID-19, our cruise has been on hold since 2020. After four years of waiting, we are sailing from South Africa to Mauritius in April-May this year. In this talk, we will present the first results of the fieldwork component of this project. |
format |
Conference Object |
author |
Menezes, V. Furey, H. Bower, A. Mazloff, M. |
spellingShingle |
Menezes, V. Furey, H. Bower, A. Mazloff, M. Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean |
author_facet |
Menezes, V. Furey, H. Bower, A. Mazloff, M. |
author_sort |
Menezes, V. |
title |
Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean |
title_short |
Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean |
title_full |
Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean |
title_fullStr |
Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean |
title_full_unstemmed |
Deep Madagascar Basin (DMB) Experiment: A Quest to Find the Abyssal Water Pathways in the Southwest Indian Ocean |
title_sort |
deep madagascar basin (dmb) experiment: a quest to find the abyssal water pathways in the southwest indian ocean |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021546 |
geographic |
Antarctic Indian The Antarctic |
geographic_facet |
Antarctic Indian The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-4107 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021546 |
op_doi |
https://doi.org/10.57757/IUGG23-4107 |
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1772809966580662272 |