Perspectives on driving mechanisms affecting intermediate water masses presence in the Rockall Trough ...
The Rockall Trough (RT), a deep channel in the northeast North Atlantic (NA), hosts water masses of subpolar and subtropical origins. Large-scale atmospheric (North Atlantic oscillation, Eastern Atlantic pattern) and oceanic (NA subpolar gyre) settings have been noted as the major drivers of water m...
| Main Author: | |
|---|---|
| Format: | Doctoral or Postdoctoral Thesis |
| Language: | unknown |
| Published: |
NUI Galway
2020
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.13025/8453 https://researchrepository.universityofgalway.ie/handle/10379/16714 |
| Summary: | The Rockall Trough (RT), a deep channel in the northeast North Atlantic (NA), hosts water masses of subpolar and subtropical origins. Large-scale atmospheric (North Atlantic oscillation, Eastern Atlantic pattern) and oceanic (NA subpolar gyre) settings have been noted as the major drivers of water masses presence in the region, their properties, thus impacting heat and salinity inputs into the RT and higher northern latitudes. Intermediate water masses are known to retain their characteristics long distance away from their places of origin, thus their presence and impact on water properties further afield notable. To detect/discern large-scale driver(s) of intermediate water masses presence in the RT, empirical orthogonal function (EOF) analysis was used. Water masses metrics, used in the EOF analysis, are fractions based on a mixing triangle approach and derived from high-resolution ship-board conductivity-temperature-depth (CTD) and delayed mode processed Argo (ISAS15) in-situ datasets. The large-scale ... |
|---|