[Updated] Bangladesh – Oil Spill in the Sundarbans National Park

Updated Dec 16, 2014 at 6:00 PM with new information on the location of the Southern Star 7, as well as new and updated satellite images.

Posted Dec. 15, 2014 at 11:00 PM: On the morning of Dec. 9, 2014, a tanker carrying heavy furnace oil to a powerplant in Bangladesh was struck in the fog by a cargo vessel and partially sank, releasing thousands of gallons of oil into the Sundarbans, the world’s largest continuous mangrove forest and a UNESCO World Heritage Site. This tidal river delta, already threatened by climate change, is home to incredible biodiversity including rare Irrawaddy and Ganges dolphins and what is believed to be one of the largest populations of the very endangered Bengal Tiger

Details, including the exact location* of the incident, remain vague, even though nearly a week has passed since the accident. The Times of India reports that while the accident occurred in a commonly travelled shipping lane, the collision occurred within one of the Sundarban’s three dolphin reserves.

*SkyTruth has now received the coordinates of the incident from representatives on the ground. See below.

The “Southern Star 7” was carrying somewhere between 66,000 and 92,000 gallons (250,000-350,000) of furnace oil, but how much was actually spilled into the river remains unknown.

Residents have been seen collecting the oil by hand and with buckets to sell for a small reward to the state run Padma Oil company, while fishermen attempt to use their nets to contain the spill. Regional officials just announced they are hiring 100 boats and 200 workers to expand the clean-up effort. These tedious and messy clean up methods are a stark reminder that even after the BP disaster in the Gulf of Mexico in 2010, the Exxon Valdez spill off Alaska in 1989, the Ixtoc 1 spill in the Gulf of Mexico in 1979, and even the Santa Barbara Oil Spill off California all the way back in 1969, we haven’t really made any major improvements in how we clean up spilled oil.
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SkyTruth has been monitoring satellite images of Sundarbans National Park, and we believe we can see evidence of the oil on imagery from the European Space Agency’s new radar satellite: Sentinel 1 – A.


According to sources on the ground, the Southern Star 7 sank into the river at 22°21’14.33″ N, 89°40’17.66″ E, about four kilometers from the confluence with the Passhur River. On December 12th it was lifted from the river floor and moved up to the riverbank to 22°22’1.44″ N, 89°38’30.91″ E.Because this region is a tidal river delta, water sloshes in and out of the mangrove forest twice a day. There are reports that the oil is continuing to spread up and down the river, and throughout the canals and channels that crisscross the region. On radar satellite imagery, we have observed what appears to be ropy strands of oil along 30 miles of the Passur River.

Here are some more images of the area as seen by Sentinel 1 – A and Landsat 8…

 


To download these images for yourself, visit EarthExplorer for the latest Landsat, and create an account at the Sentinel Scientific Data Hub.