FN Archimer Export Format
PT J
TI Evidence of atmosphere-sea ice-ocean coupling in the Terra Nova Bay polynya (Ross Sea-Antarctica)
BT 
AF RUSCIANO, Emanuela
   BUDILLON, Giorgio
   FUSCO, Giannetta
   SPEZIE, Giancarlo
AS 1:1,2;2:1;3:1;4:1;
FF 1:PDG-ODE-LPO;2:;3:;4:;
C1 Univ Napoli Parthenope, Dipartimento Sci Ambiente, Ctr Direz Isl C4, I-80143 Naples, Italy.
   IFREMER, UBO, Lab Phys Oceans, CNRS,IRD,Ctr Brest, F-20280 Plouzane, France.
C2 UNIV NAPOLI PARTHENOPE, ITALY
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-LPO
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.115
TC 32
UR https://archimer.ifremer.fr/doc/00149/26041/24165.pdf
LA English
DT Article
DE ;Terra Nova Bay polynya;High Salinity Shelf Water;Interannual variability;Katabatic wind;Air-sea-ice interaction
AB A rare long time series of hydrographic profiles and moored current meter data, collected from 1995 to 2008 in Terra Nova Bay polynya, are used in combination with meteorological data, acquired by an Automatic Weather Station, and remote sensing data from a Special Sensor Microwave/Imager. The behaviour of Terra Nova Bay coastal polynya in terms of air ice sea interactions and the consequent High Salinity Shelf Water production are detailed. The katabatic regime that characterizes Terra Nova Bay polynya is investigated and different types of events are distinguished on the bases of their duration and intensity. The more frequent katabatic events take place during the winter season from April to October, blowing on average 1-7 h, with speed between 25 and 56 m s(-1) and they abruptly end in just a few hours. The link between the persistence of the wind and the opening of the polynya is showed. In particular, an increase of the open water percentage in correspondence with each katabatic event of long duration is detected. Terra Nova Bay polynya appears characterized by two different periods of activity during the winter season. A period characterized by a considerable sea-ice free area and by an increase in salinity along the water column (from July to November), which is preceded (from March to June) and followed (from December to February) by a period in which the polynya is still open but the salinity of the water column decreases. While the period between July and November appears related to a maximum efficiency of Terra Nova Bay polynya in the sea-ice production, the period from March to June marks a "partial" functioning of the polynya. During March June, the polynya is partially free of ice and consequently the brine is released but, at this time of year, it is merely increasing the salinity of the upper layer of the ocean, reducing the stratification, but not causing High Salinity Shelf Water to be formed.
PY 2013
PD JUN
SO Continental Shelf Research
SN 0278-4343
PU Pergamon-elsevier Science Ltd
VL 61-62
UT 000321083200011
BP 112
EP 124
DI 10.1016/j.csr.2013.04.002
ID 26041
ER

EF