[ed. After reading several articles this morning about the debris from the Japan tsunami eventually washing up on West Coast beaches, I realized I didn't know much about the Great Pacific Garbage Patch. Apparently it's so large and diffuse that there's an Eastern and Western component, and smaller subtropical convergence zones as well. Millions of tons of garbage slowly circling in gyres, pushed about by large ocean currents]
by Thomas M. Kostigen, Discover Magazine
How trash makes its way to the garbage patch is pretty straightforward. When a plastic cup gets blown off the beach in, say, San Francisco, it gets caught in the California Current, which makes its way down the coast toward Central America. Somewhere off the coast of Mexico it most likely meets the North Equatorial Current, which flows toward Asia. Off the coast of Japan, the Kuroshio Current might swoop it up and yank it eastward again, until the North Pacific Current takes over and carries it past Hawaii to the garbage patch. These are the currents that make up the North Pacific Gyre. Moore says it takes a year for material to reach the Eastern Garbage Patch from Asia and several years for it to get there from the United States. Now multiply that one cup by billions of plastic items over years and years—actually about 60 years, starting after World War II, when we really began to make plastic products en masse.
Marcus Eriksen, Algalita’s director of research and education, has studied that connection between the increasing amount of plastic found in the ocean and the increasing amount of plastic produced: In 1999 there was 0.002 gram of plastic per square meter of ocean in the Eastern Garbage Patch, and as of 2005 there was 0.004 gram per square meter in the same place. In that same period plastic production in North America alone experienced double-digit growth, topping 113 billion pounds in 2006, according to the plastics division of the American Chemistry Council in Arlington, Virginia.
Beyond plastic degradation and its toxic ramifications, other refuse issues ensue. Twenty-mile castaway fishnets snare sea turtles, dolphins, and other animals, endangering their populations; birds mistake trash for food, eat it, and die; jellyfish get sick; gnarly junk washes back to shore—some of it hazardous waste. The Eastern Garbage Patch isn’t just a problem for those living in the middle of the ocean; it’s a problem for those of us who are landbound as well.
Read more:
Then there's this. Making lemonade from lemons, or in this case, islands from plastic.
also
NOAA's Marine Debris Fact Sheet
and this previous post on the effects of ocean-borne plastic
by Thomas M. Kostigen, Discover Magazine
How trash makes its way to the garbage patch is pretty straightforward. When a plastic cup gets blown off the beach in, say, San Francisco, it gets caught in the California Current, which makes its way down the coast toward Central America. Somewhere off the coast of Mexico it most likely meets the North Equatorial Current, which flows toward Asia. Off the coast of Japan, the Kuroshio Current might swoop it up and yank it eastward again, until the North Pacific Current takes over and carries it past Hawaii to the garbage patch. These are the currents that make up the North Pacific Gyre. Moore says it takes a year for material to reach the Eastern Garbage Patch from Asia and several years for it to get there from the United States. Now multiply that one cup by billions of plastic items over years and years—actually about 60 years, starting after World War II, when we really began to make plastic products en masse.Marcus Eriksen, Algalita’s director of research and education, has studied that connection between the increasing amount of plastic found in the ocean and the increasing amount of plastic produced: In 1999 there was 0.002 gram of plastic per square meter of ocean in the Eastern Garbage Patch, and as of 2005 there was 0.004 gram per square meter in the same place. In that same period plastic production in North America alone experienced double-digit growth, topping 113 billion pounds in 2006, according to the plastics division of the American Chemistry Council in Arlington, Virginia.
Beyond plastic degradation and its toxic ramifications, other refuse issues ensue. Twenty-mile castaway fishnets snare sea turtles, dolphins, and other animals, endangering their populations; birds mistake trash for food, eat it, and die; jellyfish get sick; gnarly junk washes back to shore—some of it hazardous waste. The Eastern Garbage Patch isn’t just a problem for those living in the middle of the ocean; it’s a problem for those of us who are landbound as well.
Read more:
Then there's this. Making lemonade from lemons, or in this case, islands from plastic.
also
NOAA's Marine Debris Fact Sheet
and this previous post on the effects of ocean-borne plastic
