FN Archimer Export Format
PT J
TI Flux and composition of settling particles across the continental margin of the Gulf of Lion: the role of dense shelf water cascading
BT 
AF PASQUAL, C.
   SANCHEZ-VIDAL, A.
   ZUNIGA, D.
   CALAFAT, A.
   CANALS, M.
   DURRIEU DE MADRON, X.
   PUIG, P.
   HEUSSNER, S.
   PALANQUES, A.
   DELSAUT, N.
AS 1:1;2:1,2;3:1,4;4:1;5:1;6:2;7:3;8:2;9:3;10:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
C1 Univ Barcelona, GRC Geociencies Marines, E-08028 Barcelona, Spain.
   Univ Perpignan, UMR CNRS 5110, CEFREM, F-66860 Perpignan, France.
   CSIC, Inst Ciencies Mar, E-08003 Barcelona, Spain.
   CSIC, Inst Invest Marinas, Vigo 36208, Spain.
C2 UNIV BARCELONA, SPAIN
   UNIV PERPIGNAN, FRANCE
   CSIC, SPAIN
   CSIC, SPAIN
IN DOAJ
IF 3.587
TC 46
UR https://archimer.ifremer.fr/doc/00289/40004/38602.pdf
LA English
DT Article
CR BILLION 22
   BILLION 23
   BILLION 24
   BILLION 25
   BILLION 26
   BILLION 27
   BILLION 28
   DEEP/1
   DEEP/2
   DEEP/3
   DEEP/4
   DEEP/5
   HERMES 2
   HERMES 4
   HERMES 6
   MOOSE-GE
BO Téthys II
   L'Europe
AB Settling particles were collected using sediment traps deployed along three transects in the Lacaze-Duthiers and Cap de Creus canyons and the adjacent southern open slope from October 2005 to October 2006. The settling material was analyzed to obtain total mass fluxes and main constituent contents (organic matter, opal, calcium carbonate, and siliciclastics). Cascades of dense shelf water from the continental shelf edge to the lower continental slope occurred from January to March 2006. They were traced through strong negative near-bottom temperature anomalies and increased current speeds, and generated two intense pulses of mass fluxes in January and March 2006. This oceanographic phenomenon appeared as the major physical forcing of settling particles at almost all stations, and caused both high seasonal variability in mass fluxes and important qualitative changes in settling material. Fluxes during the dense shelf water cascading (DSWC) event ranged from 90.1 g m(-2) d(-1) at the middle Cap de Creus canyon (1000 m) to 3.2 g m(-2) d(-1) at the canyon mouth (1900 m). Fractions of organic matter, opal and calcium carbonate components increased seaward, thus diminishing the siliciclastic fraction. Temporal variability of the major components was larger in the canyon mouth and open slope sites, due to the mixed impact of dense shelf water cascading processes and the pelagic biological production. Results indicate that the cascading event remobilized and homogenized large amounts of material down canyon and southwardly along the continental slope contributing to a better understanding of the off-shelf particle transport and the internal dynamics of DSWC events.
PY 2010
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 7
IS 1
UT 000274058100016
BP 217
EP 231
DI 10.5194/bg-7-217-2010
ID 40004
ER

EF