Vertical flux and lithologic material in the Ross Sea ...

• Main Authors: Collier, Robert W, Dymond, Jack R, Honjo, Susumu, Manganini, Steven J, Francois, Roger, Dunbar, Robert G
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2000
• Subjects: Antarctic Environments Southern Ocean Process Study AESOPS; Antarc*; Antarctic; Ice Shelf; Ross Sea; Southern Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.787551; https://doi.pangaea.de/10.1594/PANGAEA.787551

As part of the USJGOFS-AESOPS program, we deployed an array of moored sediment traps and determined the composition and vertical flux of particulate matter through the water column of the continental shelf environment of the Ross Sea. We deployed two moorings, with two traps each. One mooring was located in the southcentral Ross Sea along the line of AESOPS process studies; the other mooring was located in the northcentral Ross Sea. The flux in the southern Ross Sea was generally double that in the north, and there was a significant increase in flux into the deep traps indicating horizontal transport and possible focusing of particulate matter. The particles are primarily biogenic although lithogenic contributions can increase to over 30% of the flux in the near-bottom trap nearer to the ice shelf. The fluxes collected by the traps were generally low but within the range of previous observations. Several unique observations stand out from these data: (1) The export of organic matter to 200 m during the ... : Supplement to: Collier, Robert W; Dymond, Jack R; Honjo, Susumu; Manganini, Steven J; Francois, Roger; Dunbar, Robert G (2000): The vertical flux of biogenic and lithogenic material in the Ross Sea: moored sediment trap observations 1996-1998. Deep Sea Research Part II: Topical Studies in Oceanography, 47(15-16), 3491-3520 ...