Glider observations of enhanced deep water upwelling at a shelf break canyon: A mechanism for cross-slope carbon and nutrient exchange
Glider observations of enhanced deep water upwelling at a shelf break canyon: A mechanism for cross-slope carbon and nutrient exchange
复制标题
滑翔机观测陆架断裂峡谷增强的深水上升流:跨坡碳和养分交换的机制
作者:
Porter M
Using underwater gliders we have identified canyon driven upwelling across the Celtic Sea shelf‐break, in the vicinity of Whittard Canyon. The presence of this upwelling appears to be tied to the direction and strength of the local slope current, which is in itself highly variable. During typical summer time equatorward flow, an unbalanced pressure gradient force and the resulting disruption of geostrophic flow can lead to upwelling along the main axis of two small shelf break canyons. As the slope current reverts to poleward flow, the upwelling stops and the remnants of the upwelled features are mixed into the local shelf water or advected away from the region. The upwelled features are identified by the presence of sub‐pycnocline high salinity water on the shelf, and are upwelled from a depth of 300 m on the slope, thus providing a mechanism for the transport of nutrients across the shelf break onto the shelf.
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DOI:
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发表时间:
2015
期刊:
影响因子:
--
作者:
J. Klymak;W. Crawford;M. Alford;J. MacKinnon;R. Pinkel
通讯作者:
R. Pinkel
影响因子:
4.1
作者:
R. Pollard;M. Grifftths;S. Cunningham;J. Read;F. F. Pérèz;A. Ríos
通讯作者:
A. Ríos
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Weidong Xu;P. I. Miller;G. Quartly;R. Pingree
通讯作者:
R. Pingree
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
K. Denman
通讯作者:
K. Denman
影响因子:
5.2
作者:
J. Harvey
通讯作者:
J. Harvey