Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (1): add | show Print this page

one publication added to basket [230852]
(Sub-)inertial wave boundary turbulence in the Gulf of Valencia
van Haren, H.; Ribó, M.; Puig, P. (2013). (Sub-)inertial wave boundary turbulence in the Gulf of Valencia. J. Geophys. Res. 118(4): 2067-2073. dx.doi.org/10.1002/jgrc.20168
In: Journal of Geophysical Research. American Geophysical Union: Richmond. ISSN 0148-0227; e-ISSN 2156-2202, more
Peer reviewed article  

Available in  Authors 

Author keywords
    50-m high K-H billows; inertial wave turbulence; Gulf of Valencia

Authors  Top 
  • van Haren, H., more
  • Ribó, M.
  • Puig, P.

Abstract
    The bottom boundary layer above sloping topography can be highly turbulent, even in deep seas. This is demonstrated here using high-resolution 1-Hz sampling temperature sensors that were moored for 5 months every 0.5 m between 6.5 and 61 m above a 572 m deep seafloor promontory on the continental slope off Valencia, Spain. Using these data, turbulence parameters have been estimated. With time and in the vertical, values vary over four orders of magnitude. They have a dominant local inertial period which is modulated by an about 11 day periodicity associated with variations in a baroclinic unstable boundary current. When this current is strong and Eastward, the upslope phase of inertial wave generates convective turbulence which reaches closest to the bottom and therefore can effect sediment dispersal. In late winter, equally strong shear-induced turbulence in 50 m high Kelvin-Helmholtz (K-H) overturns is forced by 0.2 m s-1 off/downslope motions, which are preceded by periods of warming of a few 0.01 degrees C before the cooler near-bottom water is suddenly flushed over the promontory into the basin. Such anomalously large K-H overturns occurred 6 times in the investigated winter period.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors