Not exact matches
If you trawl a fine mesh net through any of the globe's five subtropical
gyres — giant
ocean vortexes where currents converge and swirl unhurriedly — you will haul on deck a muddle of brown planktonic goop, the occasional fish, squid or Portuguese man - of - war — and, almost certainly, a generous sprinkling of colourful plastic particles, each no
larger than your fingernail.
SeaWiFS data show that photosynthesizing organisms have declined in certain
ocean gyres (
large - scale surface current patterns), said Jim Yoder, a scientist at the Woods Hole Oceanographic Institution, in a NASA article commemorating the end of SeaWiFS's mission.
Such accumulation zones are created when
large amounts of floating plastic debris are caught by
ocean currents and concentrate in the centre of
gyre systems.
Their work, published this month in the Proceedings of the National Academy of Sciences, did find millions of pieces of plastic debris floating in five
large subtropical
gyres in the world's
oceans.
And I do think there are a number of questions about interpretation of observations, and the details of the climate model experiment (the very
large exponentially increasing freshwater fluxes, the low - resolution of the
ocean which obscures the potentially important role of wind - driven
ocean gyres, etc.).
Because of
ocean currents and winds, a
large chunk of the
gyre's trash now eventually lands on the shores of the Hawaiian archipelago.
These subtropical
ocean gyres are
large rotating masses of surface water which occupy the mid-latitudes of each
ocean basin.
A
large Beaufort
Gyre which covers most of the Arctic
Ocean during the 1980s, and a transpolar drift stream shifted towards the Eurasian Arctic.
The
largest of these patches, approximately as
large as Texas, is located in the Northern Pacific
Ocean, named the Pacific
Gyre or The Great Garbage Patch.
The westerlies of middle latitudes and the trade winds of the tropics drive the most prominent features of
ocean surface motion,
large - scale roughly circular current systems elongated in the east - west direction known as
gyres.
In this paper, it is shown that coherent
large - scale low - frequency variabilities in the North Atlantic
Ocean — that is, the variations of thermohaline circulation, deep western boundary current, northern recirculation
gyre, and Gulf Stream path — are associated with high - latitude oceanic Great Salinity Anomaly events.