An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal
Abstract An intrathermocline eddy (ITE) was detected to the northwest of Preparis Channel by in situ measurements in January 2018. The ITE had a horizontal extent of approximately 200 km and a maximum velocity of approximately 60 cm/s at core depths between 75 and 130 m. This ITE was generated by th...
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| Format: | Article |
| Language: | English |
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Wiley
2022-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2022GL099201 |
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| author | Xiwu Zhou Yun Qiu Xinyu Lin Hui Teng Cherry Aung |
| author_facet | Xiwu Zhou Yun Qiu Xinyu Lin Hui Teng Cherry Aung |
| author_sort | Xiwu Zhou |
| collection | DOAJ |
| description | Abstract An intrathermocline eddy (ITE) was detected to the northwest of Preparis Channel by in situ measurements in January 2018. The ITE had a horizontal extent of approximately 200 km and a maximum velocity of approximately 60 cm/s at core depths between 75 and 130 m. This ITE was generated by the transformation from a preexisting surface‐intensified anticyclonic eddy (SAE). The blocking of the northeast monsoon by the Arakan Yoma Mountains resulted in a weak wind stress on the leeward side of the mountains. This caused positive Ekman pumping around Preparis Channel together with eddy wind‐driven upwelling, shoaling the upper thermocline in the SAE, and thus turning it into an ITE. Among the 71 anticyclonic eddies detected by Argo profiles around Preparis Channel from 2003 to 2018, approximately 60% were ITEs, indicating that Preparis Channel could be the main source for ITE generation in Bay of Bengal. |
| format | Article |
| id | doaj-art-c6407bc14158454e8978d16767190165 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-c6407bc14158454e8978d167671901652025-01-22T14:38:16ZengWileyGeophysical Research Letters0094-82761944-80072022-06-014912n/an/a10.1029/2022GL099201An Intrathermocline Eddy Observed in the Northeastern Bay of BengalXiwu Zhou0Yun Qiu1Xinyu Lin2Hui Teng3Cherry Aung4Third Institute of Oceanography Ministry of Natural Resources Xiamen ChinaThird Institute of Oceanography Ministry of Natural Resources Xiamen ChinaThird Institute of Oceanography Ministry of Natural Resources Xiamen ChinaThird Institute of Oceanography Ministry of Natural Resources Xiamen ChinaMarine Science Department Myeik University Tanintharyi MyanmarAbstract An intrathermocline eddy (ITE) was detected to the northwest of Preparis Channel by in situ measurements in January 2018. The ITE had a horizontal extent of approximately 200 km and a maximum velocity of approximately 60 cm/s at core depths between 75 and 130 m. This ITE was generated by the transformation from a preexisting surface‐intensified anticyclonic eddy (SAE). The blocking of the northeast monsoon by the Arakan Yoma Mountains resulted in a weak wind stress on the leeward side of the mountains. This caused positive Ekman pumping around Preparis Channel together with eddy wind‐driven upwelling, shoaling the upper thermocline in the SAE, and thus turning it into an ITE. Among the 71 anticyclonic eddies detected by Argo profiles around Preparis Channel from 2003 to 2018, approximately 60% were ITEs, indicating that Preparis Channel could be the main source for ITE generation in Bay of Bengal.https://doi.org/10.1029/2022GL099201intrathermocline eddyKelvin waveBay of Bengalmonsoon |
| spellingShingle | Xiwu Zhou Yun Qiu Xinyu Lin Hui Teng Cherry Aung An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal Geophysical Research Letters intrathermocline eddy Kelvin wave Bay of Bengal monsoon |
| title | An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal |
| title_full | An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal |
| title_fullStr | An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal |
| title_full_unstemmed | An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal |
| title_short | An Intrathermocline Eddy Observed in the Northeastern Bay of Bengal |
| title_sort | intrathermocline eddy observed in the northeastern bay of bengal |
| topic | intrathermocline eddy Kelvin wave Bay of Bengal monsoon |
| url | https://doi.org/10.1029/2022GL099201 |
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