Great Pacific Garbage « Patch »Great Pacific Garbage « Patch »Maria Diaz Rodriguez

Humans and the Environment CBA

OverviewOverview• BackgroundBackground• Analysis Analysis • SolutionSolution• Conclusion Conclusion • Blibliography Blibliography

Background Background

• The name “Pacific Garbage Patch” has led many to believe that this area is a large and continuous patch of easily visible marine debris items such as bottles and other litter —similar to a literal island of trash that should be visible with satellite or aerial photographs. While higher concentrations of litter items can be found in this area, along with other debris such as derelict fishing nets, much of the debris is actually small pieces of floating plastic that are not immediately evident to the naked eye.

Background ContinuedBackground Continued

• The debris is continuously mixed by wind and wave action and widely dispersed both over huge surface areas and throughout the top portion of the water column. It is possible to sail through the garbage “patch” area and see very little or no debris on the water’s surface. It is also difficult to estimate the size of these “patches,” because the borders and content constantly change with ocean currents and winds. Regardless of the exact size, mass, and location of the garbage “patch,” manufactured debris does not belong in our oceans and waterways and must be addressed.

Garbage “Patch” Illustration

It is estimated that the size of the “patch” is twice that of the state of Texas - half a million square miles or the

equivalent of 20 times the size of England

Analysis

• The Pacific Ocean is the largest ocean on the planet covering nearly 30% of Earth’s surface area (~96 million square miles, or ~15 times the size of the continental US)

It is certainly not cost-effective to skim the surface of the entire ocean. Even a cleanup focusing on garbage “patches” would be a tremendous challenge because of these points:

– concentration areas move and change throughout the year – areas are typically very large – Marine debris is not distributed evenly within areas – Modes of transport and cleanup will likely require fuel of some sort – Most of the marine debris found are small bits of plastic – This all adds up to a bigger challenge than even sifting beach sand to remove bits of marine

debris. In some areas where marine debris concentrates, so does marine life This makes simple skimming the debris risky—more harm than good may be caused. Remember that much of our ocean life is in the microscopic size range.

The Solution? YOU! YOU!

Conclusion: Marine Derbis is Everyone’s Problem

• Marine debris threatens marine life and our oceans and coasts. It affects us too, whether we are boating, fishing, swimming, or simply enjoying a day at the beach. Trash can travel through storm drains, streams, and rivers and end up in your community, as well as in the ocean.

• Studying this issue helps us understand that not all environmental issues are reparable, but depends on us to stop the problem.

Bibliography • http://marinedebris.noaa.gov/info/

patch.html• http://water.epa.gov/type/oceb/

marinedebris/• http://www.oceanconservancy.org/

our-work/marine-debris/• http://www.coastal.ca.gov/ccbn/

trashdebris.html• http://ocean.si.edu/blog/ocean-

trash-marine-debris-shore-sea