Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current.
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| Title: | Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current. |
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| Authors: | Hiron, Luna1 lhiron@rsmas.miami.edu, Cruz, Benjamin Jaimes1, Shay, Lynn K.1 |
| Source: | Journal of Geophysical Research. Oceans. Apr2020, Vol. 125 Issue 4, p1-17. 17p. |
| Subject Terms: | *Oil spills, *Agricultural intensification, *Atmospheric sciences, Eddies, Loop Current |
| Abstract: | During the 2010 Deepwater Horizon oil spill, an underestimated part of the oil was entrained into an intensified Loop Current Frontal Eddy (LCFE). These eddies, which are also known to play an essential role in the Loop Current eddy (LCE) shedding, are difficult to predict, and the dynamics involving their intensification are still not fully understood. The Loop Current (LC) and its strongest LCFEs were continuously tracked during 2009–2011 using sea surface height (SSH) from AVISO+. A mooring array provided complementary information about the internal structure of the LC‐LCFE interaction. The intensification of the tracked LCFEs presented similar characteristics, independent of their location: a steep increase in kinetic energy, a corresponding negative increase in SSH, and an increase in its area. As the LCFE grows, the flow at the interface with the LC becomes stronger and deeper and the horizontal density gradient between the features increases. The intensification of the front and the LCFEs is driven by the advection (nonlinear) term and the gradient pressure (linear) term in the momentum budget. Evidence of an inverse energy cascade suggests that LCFEs are extracting energy and mass from the submesoscale field to the zone of contact between the LC and the LCFE, strengthening the front and allowing the LCFEs to grow during periods of intensification. Understanding the physics driving the LCFE intensification is a key step to improve LC forecast models and to better predict LCE shedding events, as well as oil and particle transport around the LC. Plain Language Summary: Loop Current Frontal Eddies (LCFEs) are cool whirlpools located in the vicinity of the Loop Current (LC). These circulation features are known to play a crucial role in the separation of large warm whirlpools from the LC. Additionally, the LCFEs influence the local circulation. During the 2010 Deepwater Horizon oil spill, part of the oil was entrained around and inside an intensified LCFE, preventing it from reaching the Florida Keys as previously predicted by forecast models. Thus, understanding the LCFE intensification is a key step to improve LC forecast models and to better predict oil and particle transport around the LC. The LC and its strongest LCFEs were studied and continuously tracked using satellite and a mooring array for 2009–2011. During intensification periods, the LCFEs spin faster and become larger and deeper and the LC‐LCFE front becomes stronger. Evidence shows that during intensification periods, the LCFEs entrain mass from the surrounding waters and store in its center, which explains the accumulation of the oil inside an intensified LCFE during the 2010 Deepwater Horizon oil spill. Key Points: Loop Current Frontal Eddies locally intensify through linear and nonlinear interactions with the Loop Current frontFrontal eddy intensification is dependent on the distance from the Loop Current and drives a local intensification of the Loop Current frontLoop Current Frontal Eddies extract and store mass from the surrounding submesoscale flow during intensification events [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geophysical Research. Oceans is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 142907009 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hiron%2C+Luna%22">Hiron, Luna</searchLink><relatesTo>1</relatesTo><i> lhiron@rsmas.miami.edu</i><br /><searchLink fieldCode="AR" term="%22Cruz%2C+Benjamin+Jaimes%22">Cruz, Benjamin Jaimes</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shay%2C+Lynn+K%2E%22">Shay, Lynn K.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Oceans%22">Journal of Geophysical Research. Oceans</searchLink>. Apr2020, Vol. 125 Issue 4, p1-17. 17p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Oil+spills%22">Oil spills</searchLink><br />*<searchLink fieldCode="DE" term="%22Agricultural+intensification%22">Agricultural intensification</searchLink><br />*<searchLink fieldCode="DE" term="%22Atmospheric+sciences%22">Atmospheric sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Eddies%22">Eddies</searchLink><br /><searchLink fieldCode="DE" term="%22Loop+Current%22">Loop Current</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: During the 2010 Deepwater Horizon oil spill, an underestimated part of the oil was entrained into an intensified Loop Current Frontal Eddy (LCFE). These eddies, which are also known to play an essential role in the Loop Current eddy (LCE) shedding, are difficult to predict, and the dynamics involving their intensification are still not fully understood. The Loop Current (LC) and its strongest LCFEs were continuously tracked during 2009–2011 using sea surface height (SSH) from AVISO+. A mooring array provided complementary information about the internal structure of the LC‐LCFE interaction. The intensification of the tracked LCFEs presented similar characteristics, independent of their location: a steep increase in kinetic energy, a corresponding negative increase in SSH, and an increase in its area. As the LCFE grows, the flow at the interface with the LC becomes stronger and deeper and the horizontal density gradient between the features increases. The intensification of the front and the LCFEs is driven by the advection (nonlinear) term and the gradient pressure (linear) term in the momentum budget. Evidence of an inverse energy cascade suggests that LCFEs are extracting energy and mass from the submesoscale field to the zone of contact between the LC and the LCFE, strengthening the front and allowing the LCFEs to grow during periods of intensification. Understanding the physics driving the LCFE intensification is a key step to improve LC forecast models and to better predict LCE shedding events, as well as oil and particle transport around the LC. Plain Language Summary: Loop Current Frontal Eddies (LCFEs) are cool whirlpools located in the vicinity of the Loop Current (LC). These circulation features are known to play a crucial role in the separation of large warm whirlpools from the LC. Additionally, the LCFEs influence the local circulation. During the 2010 Deepwater Horizon oil spill, part of the oil was entrained around and inside an intensified LCFE, preventing it from reaching the Florida Keys as previously predicted by forecast models. Thus, understanding the LCFE intensification is a key step to improve LC forecast models and to better predict oil and particle transport around the LC. The LC and its strongest LCFEs were studied and continuously tracked using satellite and a mooring array for 2009–2011. During intensification periods, the LCFEs spin faster and become larger and deeper and the LC‐LCFE front becomes stronger. Evidence shows that during intensification periods, the LCFEs entrain mass from the surrounding waters and store in its center, which explains the accumulation of the oil inside an intensified LCFE during the 2010 Deepwater Horizon oil spill. Key Points: Loop Current Frontal Eddies locally intensify through linear and nonlinear interactions with the Loop Current frontFrontal eddy intensification is dependent on the distance from the Loop Current and drives a local intensification of the Loop Current frontLoop Current Frontal Eddies extract and store mass from the surrounding submesoscale flow during intensification events [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geophysical Research. Oceans is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1029/2019JC015533 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 1 Subjects: – SubjectFull: Oil spills Type: general – SubjectFull: Agricultural intensification Type: general – SubjectFull: Atmospheric sciences Type: general – SubjectFull: Eddies Type: general – SubjectFull: Loop Current Type: general Titles: – TitleFull: Evidence of Loop Current Frontal Eddy Intensification Through Local Linear and Nonlinear Interactions with the Loop Current. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hiron, Luna – PersonEntity: Name: NameFull: Cruz, Benjamin Jaimes – PersonEntity: Name: NameFull: Shay, Lynn K. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 21699275 Numbering: – Type: volume Value: 125 – Type: issue Value: 4 Titles: – TitleFull: Journal of Geophysical Research. Oceans Type: main |
| ResultId | 1 |
