文献类型：期刊文献

英文题名：Whither the Chukchi Slope Current?

作者：Boury, Samuel[1];Pickart, Robert S.[2];Odier, Philippe[1];Lin, Peigen[2];Li, Min[3];Fine, Elizabeth C.[4];Simmons, Harper L.[5];MacKinnon, Jennifer A.[4];Peacock, Thomas[6]

机构：[1]Univ Claude Bernard, Univ Lyon, CNRS, Lab Phys,ENS Lyon, Lyon, France;[2]Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA;[3]Guangdong Ocean Univ, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang, Peoples R China;[4]Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA;[5]Univ Alaska Fairbanks, Sch Fisheries & Ocean Sci, Fairbanks, AK USA;[6]MIT, Dept Mech Engn, Cambridge, MA 02139 USA

年份：2020

卷号：50

期号：6

起止页码：1717

外文期刊名：JOURNAL OF PHYSICAL OCEANOGRAPHY

收录：SCI-EXPANDED(收录号：WOS:000589823100010)、、EI(收录号：20203008960833)、Scopus(收录号：2-s2.0-85088226259)、WOS

基金：This work was principally supported by the Stratified Ocean Dynamics of the Arctic (SODA) program under ONR Grant N000141612450. S.B. wants to thank Labex iMust for supporting his research. R.S.P. acknowledges U.S. National Science Foundation Grants OPP-1702371, OPP-1733564, and PLR-1303617. P.L. acknowledges National Oceanic and Atmospheric Administration Grant NA14-OAR4320158. M.L. acknowledges National Natural Science Foundation of China Grants 41706025 and 41506018. T.P. thanks ENS de Lyon for travel support funding. The authors gratefully acknowledge the support of Steve Jayne, Pelle Robins, and Alex Ekholm at the Woods Hole Oceanographic Institution for preparation, deployment, and data provision for the ALTO floats. Chanhyung Jeon assisted in preparing and deploying the floats. The invaluable support of the crew of the R/V Sikuliaq is also gratefully acknowledged.

语种：英文

外文关键词：Ships

外文摘要：Recent measurements and modeling indicate that roughly half of the Pacific-origin water exiting the Chukchi Sea shelf through Barrow Canyon forms a westward-flowing current known as the Chukchi Slope Current (CSC), yet the trajectory and fate of this current is presently unknown. In this study, through the combined use of shipboard velocity data and information from five profiling floats deployed as quasi-Lagrangian particles, we delve further into the trajectory and the fate of the CSC. During the period of observation, from early September to early October 2018, the CSC progressed far to the north into the Chukchi Borderland. The northward excursion is believed to result from the current negotiating Hanna Canyon on the Chukchi slope, consistent with potential vorticity dynamics. The volume transport of the CSC, calculated using a set of shipboard transects, decreased from approximately 2 Sv (1 Sv equivalent to 10(6) m(3) s(-1)) to near zero over a period of 4 days. This variation can be explained by a concomitant change in the wind stress curl over the Chukchi shelf from positive to negative. After turning northward, the CSC was disrupted and four of the five floats veered offshore, with one of the floats permanently leaving the current. It is hypothesized that the observed disruption was due to an anticyclonic eddy interacting with the CSC, which has been observed previously. These results demonstrate that, at times, the CSC can get entrained into the Beaufort Gyre.