FN Archimer Export Format
PT J
TI A numerical study of tropical cyclone-induced sediment dynamics on the Australian North West Shelf
BT 
AF DUFOIS, Francois
   LOWE, Ryan J.
   RAYSON, Matthew D.
   BRANSON, Paul M.
AS 1:1,2,3,4;2:1,2,3;3:1,3;4:1,3,5;
FF 1:PDG-ODE-DYNECO-DHYSED;2:;3:;4:;
C1 Univ Western Australia, UWA Oceans Inst, Crawley, WA, Australia.
   Univ Western Australia, ARC Ctr Excellence Coral Reef Studies, Crawley, WA, Australia.
   Univ Western Australia, Oceans Grad Sch, Crawley, WA, Australia.
   DHYSED, IFREMER, DYNECO, Plouzane, France.
   CSIRO Oceans & Atmosphere, Crawley, WA, Australia.
C2 UNIV WESTERN AUSTRALIA, AUSTRALIA
   UNIV WESTERN AUSTRALIA, AUSTRALIA
   UNIV WESTERN AUSTRALIA, AUSTRALIA
   IFREMER, FRANCE
   CSIRO, AUSTRALIA
SI BREST
SE PDG-ODE-DYNECO-DHYSED
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 3.235
TC 7
UR https://archimer.ifremer.fr/doc/00449/56078/57601.pdf
   https://archimer.ifremer.fr/doc/00449/56078/57602.pdf
LA English
DT Article
DE ;ROMS;COAWST;sediment transport model;tropical cyclone;surface waves;sediment pathways
AB Owing to their strong forcing of the ocean surface, tropical cyclones strongly modify the hydrodynamics of Australia's North West Shelf (one of the world's tropical cyclone hotspots), which in turn plays a dominant role in its sediment dynamics. Previous modeling studies have focused on describing the short term sediment dynamics during individual tropical cyclones, but have lacked validation of the responses using field observations. As a consequence, the long term cumulative impact of the tropical cyclones on the residual sediment transport pathways at the shelf scale remains unclear. In this study we apply a sediment transport model over the North West Shelf, validate its performance using an extensive field dataset, and implement a 14 year‐long model simulation to assess the sediment fluxes. The model results confirm the overwhelming role tropical cyclones play on sediment transport processes over most of the shelf, despite each cyclone only influencing a small portion of the shelf at a particular time. Overall we identified 19 tropical cyclone events over the 14 year period, which despite accounting for less than 5% of time, were found to drive the majority of both the suspended sediment alongshore and seaward cross‐shore transport. The results revealed significant inter‐annual variability of the tropical cyclone‐induced sediment dynamics with greater suspended transport during the 3 consecutive Ningaloo Niño years (2011‐2013) where sea surface temperatures off northwestern Australia were anomalously warm with elevated tropical cyclone activity. 
PY 2018
PD AUG
SO Journal Of Geophysical Research-oceans
SN 2169-9275
PU Amer Geophysical Union
VL 123
IS 8
UT 000445188900004
BP 5113
EP 5133
DI 10.1029/2018JC013939
ID 56078
ER

EF