Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap
The problem of a geophysical western boundary current negotiating a gap in its supporting boundary is considered. For traditional straight, parallel gaps, such systems are known to exhibit two dominant states, gap penetrating and leaping, with the transitional dynamics between states displaying hyst...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/7/2/71 |
| _version_ | 1797480368656351232 |
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| author | Joseph Kuehl Vitalii A. Sheremet |
| author_facet | Joseph Kuehl Vitalii A. Sheremet |
| author_sort | Joseph Kuehl |
| collection | DOAJ |
| description | The problem of a geophysical western boundary current negotiating a gap in its supporting boundary is considered. For traditional straight, parallel gaps, such systems are known to exhibit two dominant states, gap penetrating and leaping, with the transitional dynamics between states displaying hysteresis. However, for more complex geometries, such as angled or offset gap configurations, the question of multiple states and hysteresis is unresolved. In such cases, the inertia of the western boundary current is oriented into the gap, hence the assumption that increased inertia promotes gap penetrating loop current states. Here we address the problem numerically in an idealized setting. It is found that despite the inertia of the current being directed into the gap, for large western boundary current transport values, leaping states will be present. That is, we show here that the presence of multiple states with hysteresis for gap-leaping western boundary current systems is robust to both angled and offset gap geometries. |
| first_indexed | 2024-03-09T21:59:46Z |
| format | Article |
| id | doaj.art-98a5bf787e844b61ae88a9d3781c2522 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-09T21:59:46Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-98a5bf787e844b61ae88a9d3781c25222023-11-23T19:52:28ZengMDPI AGFluids2311-55212022-02-01727110.3390/fluids7020071Effect of the Coastline Geometry on the Boundary Currents Intruding through the GapJoseph Kuehl0Vitalii A. Sheremet1Spencer Lab Room 210, Mechanical Engineering, University of Delaware, 130 Academy Street, Newark, DE 19716, USAGraduate School of Oceanography, University of Rhode Island, Kingston, RI 02881, USAThe problem of a geophysical western boundary current negotiating a gap in its supporting boundary is considered. For traditional straight, parallel gaps, such systems are known to exhibit two dominant states, gap penetrating and leaping, with the transitional dynamics between states displaying hysteresis. However, for more complex geometries, such as angled or offset gap configurations, the question of multiple states and hysteresis is unresolved. In such cases, the inertia of the western boundary current is oriented into the gap, hence the assumption that increased inertia promotes gap penetrating loop current states. Here we address the problem numerically in an idealized setting. It is found that despite the inertia of the current being directed into the gap, for large western boundary current transport values, leaping states will be present. That is, we show here that the presence of multiple states with hysteresis for gap-leaping western boundary current systems is robust to both angled and offset gap geometries.https://www.mdpi.com/2311-5521/7/2/71western boundary currentloop currenthysteresisgeophysical fluid dynamics |
| spellingShingle | Joseph Kuehl Vitalii A. Sheremet Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap Fluids western boundary current loop current hysteresis geophysical fluid dynamics |
| title | Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap |
| title_full | Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap |
| title_fullStr | Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap |
| title_full_unstemmed | Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap |
| title_short | Effect of the Coastline Geometry on the Boundary Currents Intruding through the Gap |
| title_sort | effect of the coastline geometry on the boundary currents intruding through the gap |
| topic | western boundary current loop current hysteresis geophysical fluid dynamics |
| url | https://www.mdpi.com/2311-5521/7/2/71 |
| work_keys_str_mv | AT josephkuehl effectofthecoastlinegeometryontheboundarycurrentsintrudingthroughthegap AT vitaliiasheremet effectofthecoastlinegeometryontheboundarycurrentsintrudingthroughthegap |