FN Archimer Export Format
PT J
TI The effect of stratification on tidal current profiles in a region of fresh-water influence
BT 
AF VISSER, AW
   SOUZA, AJ
   HESSNER, K
   SIMPSON, JH
AS 1:;2:;3:;4:;
FF 1:;2:;3:;4:;
C1 UNIV COLL N WALES,SCH MARINE SCI,MENAI BRIDGE LL59 5EY,GWYNEDD,WALES
   UNIV HAMBURG,INST MEERESKUNDE,D-22529 HAMBURG,GERMANY
C2 UNIV COLL N WALES,SCH MARINE SCI,MENAI BRIDGE LL59 5EY,GWYNEDD,WALES
   UNIV HAMBURG,INST MEERESKUNDE,D-22529 HAMBURG,GERMANY
IF 0.662
TC 83
UR https://archimer.ifremer.fr/doc/00098/20898/18511.pdf
LA English
DT Article
AB Observations of the semi-diurnal tidal current ellipses within the Rhine ROFI are reported. The vertical structure of these tidal ellipses are observed to be significantly different for stratified and well mixed conditions. in particular, during well mixed conditions, tidal currents are essentially rectilinear and directed parallel to the coast. With the onset of stratification, significant cross-shore components, reaching 40% of the magnitude of the along-shore components appear. These components are 180 degrees out of phase from near surface to near-bottom with surface currents rotating anticyclonically, and bottom currents cyclonically. It is proposed that this phenomenon may be explained by a decoupling of the upper and lower portions of the water column during stratified periods due to reduced viscosity within the pycnocline. A two layer model is used to examine this hypothesis and appears to be successful in reproducing many of the features of the observed semi-diurnal tidal ellipse variability.
PY 1994
SO Oceanologica Acta
SN 0399-1784
PU Gauthier-Villars
VL 17
IS 4
UT A1994QK12200003
BP 369
EP 381
ID 20898
ER

EF