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U.S. Agencies Coordinate Efforts As Japan Tsunami Debris Scatters In The Pacific Ocean, Heads To Shore

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SILVER SPRING, Marland -- Debris from the tsunami that devastated Japan in March could reach the United States as early as this winter, according to predictions by NOAA scientists. However, they warn there is still a large amount of uncertainty over exactly what is still floating, where it's located, where it will go, and when it will arrive. Responders now have a challenging, if not impossible situation on their hands: How do you deal with debris that could now impact U.S. shores, but is difficult to find?

Federal agencies join forces

To learn more about the tsunami debris, NOAA researchers have been working with the U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service, and other partners to coordinate data collection activities.

NOAA and its partners are also coordinating an interagency assessment and response plan to address the wide-range of potential scenarios and threats posed by the debris.

"We're preparing for the best and worst case scenarios and everything in between," says Nancy Wallace, director for NOAA's Marine Debris Program.

As the tsunami surge receded, it washed much of what was in the coastal inundation zone into the ocean. Boats, pieces of smashed buildings, appliances, and plastic, metal, and rubber objects of all shapes and sizes washed into the water either sinking near the shore or floating out to sea. The refuse formed large debris fields captured by satellite imagery and aerial photos of the coastal waters.

The Japanese government estimated that the tsunami generated 25 million tons of rubble, but there is no clear understanding of exactly how much debris was swept into the water nor what remained afloat.

What remains of the debris?

Nine months later, debris fields are no longer visible. Winds and ocean currents scattered items in the massive North Pacific Ocean to the point where debris is no longer visible from satellite. Vessels regularly traveling the North Pacific have reported very few sightings. Only two pieces have been clearly linked to the tsunami.

NOAA is coordinating new interagency reporting and monitoring efforts that will provide critical information on the location of the marine debris generated by the tsunami. Ships can now report significant at-sea debris sightings and individuals or groups can request shoreline monitoring guides at .

Where is it?

Computer models run by NOAA and University of Hawaii researchers show some debris could pass near or wash ashore in the Northwestern Hawaiian Islands (in the Papahānaumokuākea Marine National Monument) as early as this winter, approach the West Coast of the United States and Canada in 2013, and circle back to the main Hawaiian Islands in 2014 through 2016.

Researchers caution that models are only predictions based on location of debris when it went into the water, combined with historical ocean currents and wind speeds.

Conditions in the ocean constantly change, and items can sink, break down, and disperse across a huge area. Because it is not known what remains in the water column nor where, scientists can't determine with certainty if any debris will wash ashore.

Worst- and Best-case Scenarios

The worst-case scenario is boats and unmanageable concentrations of other heavy objects could wash ashore in sensitive areas, damage coral reefs, or interfere with navigation in Hawaii and along the U.S. West Coast. Best case? The debris will break up, disperse and eventually degrade, sparing coastal areas.

Debris will not go away completely, even in a best-case scenario. Marine debris is an ongoing problem for Hawaii and West Coast states, where garbage and other harmful items regularly wash up on beaches, reefs and other coastal areas.

What else is NOAA doing?

NOAA has convened experts to review available data and information from models and provide their perspectives on debris fate and transport. They are gathering information on significant sighting of marine debris in the North Pacific through NOAA's Office of Marine and Aviation Operation's Pacific fleet, the NOAA Voluntary Observing Ship Program, which includes industry long-haul transport vessels, as well as the NOAA Pacific Island Regional Observer Program and their work with the Hawaii longline fishing industry. NOAA is also working with the U.S. Fish and Wildlife Service and the State of Hawaii on shoreline debris monitoring in the Papahānaumokuākea Monument.

Views expressed in this article do not necessarily reflect those of, its staff or its advertisers.

Reader Comments

10 people have commented so far. cloud add your comment

Here is a thought. The Japanese should have spent the $30,000,000 they are wasting on whaling in Antarctica on cleaning up some of this mess. I hope the US government sends them the damned bill!
   comment# 1   - Capt R W O · Fairport, US · Dec 29, 2011 @ 2:53pm

Isn't going to happen any time soon. Agree with you though. Bill the Japanese until they stop the ridiculous whaling.
   comment# 2   - Betsy Baker · Tempe USA · Dec 30, 2011 @ 3:05pm

While emphasize with the Japanese and it is not their fault they have the Tsunami, the cleaning up of their debris should not be left alone by our government that is already carrying trillions of dollars of deficit.
   comment# 3   - Eppie Billena · Honolulu,USA · Dec 30, 2011 @ 6:43pm

@Capt R W O It isn't exactly Japans fault for what happened, and I do believe they have all the right to be whaling. 30 million doesn't impress anyone since that probably doesn't even touch rebuilding, and recovering funds needed for them. And how do you know they are wasting it? Do have the books? Are you a spy? Here's a thought. Leave them alone. Here's another thought, the US has a Marine Debris Program, and if it weren't for circumstances like this, more Americans would be laid off, so really, Japans debris is actually helping Americans make money. Please get off your high horse and get over yourself....
   comment# 4   - Tiffany · SC · Dec 31, 2011 @ 3:47am

anywhere but japan
   comment# 5   - bobbyd · usa · Dec 31, 2011 @ 7:17am

@ Tiffany are you serious lay off Lapan for there whaling practices. They say its for research but you don't see the U.S. doing it. Give me a break anyone with a brain knows what they are doing. As for the MArine Debris Program how many people do you really think are being employed U.S. responsibility to clean up everyone elses garbage?? Just another example of other countries taking advantage of the U.S..
   comment# 6   - Cabledawg · Coldwater, Mi · Dec 31, 2011 @ 7:40am

The Japanese do need to stop their hunting of whales. The products they derive from these animals can be obtained elsewhere in other materials or made synthetically. I understand their long history with whale hunting, but just because they have a long history of it does not make it right. The burden of the tsunami clean up should not be placed squarely on America's shoulders. It should be a global effort, as all environmental concerns should be.
   comment# 7   - 3rdRock · NW, Ga. · Dec 31, 2011 @ 8:40am

More Whales perish from ship collision's the Japanese Hunt. Do we forget that the USA was built in part from Whaling. Whale oil lubricates delicate electronics and makes a great compass oil. More effort should be spent on figuring out how we can stop killing each other.
   comment# 8   - marinermcv · USA · Dec 31, 2011 @ 11:11am

Tiffany, I agree with what you said. But still they have to stop the whale hunting or killing endangers spices. Japan has been fishing around Micronesia for long which indicates that they are not that hungry. Jan 1, 2012
   comment# 9   - fafapotera · Micronesia, FSM · Dec 31, 2011 @ 2:46pm

I have lots of good friends in Japan, they need to do whatever they can to get back on their feet
   comment# 10   - pressure washing league city · League city · Apr 18, 2013 @ 2:43pm
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