Tag: Deepwater Horizon

Study finds 1,000-square-mile contamination footprint from 2010 Deepwater Horizon oil disaster

Satellite view deepwater horizon oil spill
Oil from BP’s failed Deepwater Horizon drilling operation slicks across the Gulf of Mexico in this 201 photo from NASA.

New data help show how long impacts will linger on seafloor, where pollutants get into the foodchain

Staff Report

Fall-out from the 2010 Deepwater Horizon oil disaster contaminated more 1,000 square miles of the Gulf of Mexico’s seafloor, but the exact long-term ecological effects are still unknown, said a group of scientists who are tracking 125 major petroleum hydrocarbons settled to the deep ocean floor when the failed Macondo well discharged 160 million gallons of crude oil into the water.

Their new paper, published in the Proceedings of the National Academy of Sciences, outlines the effort to determine how fast each of those compounds will biodegrade. The data came from a federal Natural Resource Damage Assessment of the catastrophic oil spill. Continue reading “Study finds 1,000-square-mile contamination footprint from 2010 Deepwater Horizon oil disaster”

NASA study shows link between Deepwater Horizon spill and coastal wetlands erosion

A NASA satellite image shows the oil slick from the Deepwater Horizon disaster spreading across the northern Gulf of Mexico in late May, 2010.
A NASA satellite image shows the oil slick from the Deepwater Horizon disaster spreading across the northern Gulf of Mexico in late May, 2010.

‘Dramatic, widespread shoreline loss …’

Staff Report

Oil washed toward shore after the 2010 Deepwater Horizon disaster is a big factor in coastal erosion rates, according to scientists with NASA and the U.S. Geologicial Survey who tracked the changes along the Gulf of Mexico. Their research shows a pattern of dramatic, widespread shoreline loss” along  the Louisiana’s coast in Barataria Bay, located on the western side of the Mississippi River Delta.

The study compared images of the shoreline  taken a year before the oil spill with images taken during a 2.5 year span after the spill. Scientists also compared shoreline losses from storm-induced erosion with losses linked to shoreline oiling. Storm-induced erosion occurred at isolated shoreline sections, but the pre-spill shoreline from 2009 to 2010 was largely stable. Continue reading “NASA study shows link between Deepwater Horizon spill and coastal wetlands erosion”

Study says old, weathered oil from spills is even more toxic to fish than fresh crude

Scientists still studying Deepwater Horizon spill impacts

Oil from BP's failed Deepwater Horizon drill rig and the Macondo well spread across the ocean in May 2010. PHOTO COURTESY NOAA.
Oil from BP’s failed Deepwater Horizon drill rig and the Macondo well spread across the Gulf of Mexico in May 2010. Photo courtesy NOAA.

Staff Report

It’s been six years since BP’s Deepwater Horizon drilling rig in the Gulf of Mexico failed disastrously, but scientists are still learning about how the oil affected ocean species and ecosystems.

In findings from new study released this week, researchers from the University of California, Riverside and the University of Miami Rosenstiel School of Marine and Atmospheric Science reported that old, weathered oil from the spill is even more toxic than fresh crude oil. Ultraviolet light changes changes the chemistry of the oil, the scientists said, further threatening numerous commercially and ecologically important fishes.

The Deepwater Horizon oil disaster was the worst on U.S. history. More than 3 million barrels of oil spilled into the Gulf, contaminating spawning habitats for many fishes. The oil also killed deep sea corals and had a devastating effect on dolphin reproduction. Continue reading “Study says old, weathered oil from spills is even more toxic to fish than fresh crude”

Chemical dispersants may affect natural communities of oil-degrading bacteria after spills

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A NASA satellite image shows the spread of oil in the Gulf of Mexico after the 2010 Deepwater Horizon disaster.

Lab tests show nuanced response to application of oil dispersant chemicals

Staff Report

Lab tests suggest that more thought must be given to how dispersant chemicals are used during and after an oil spill. In some cases, the combination of dispersants and oil may actually inhibit microorganisms that can break down hydrocarbons, according to marine scientists. Continue reading “Chemical dispersants may affect natural communities of oil-degrading bacteria after spills”

Study documents high rate of reproductive failure in dolphins hit by Deepwater Horizon oil spill

Impacts of oil pollution expected to affect Barataria Bay populations for a long time

Dolphin Y01 pushes a dead calf in March, 2013. This behavior is sometimes observed in female dolphins when their newborn calf does not survive. Credit Louisiana Department of Wildlife and Fisheries
A dolphin pushes a dead calf in March, 2013. This behavior is sometimes observed in female dolphins when their newborn calf does not survive. Photo courtesy Louisiana Department of Wildlife and Fisheries.

Staff Report

There’s already a wealth of research showing that the Deepwater Horizon oil disaster in the Gulf of Mexico was very bad for coastal dolphins. One study, for example, showed dolphins in Barataria Bay exposed to BP’s oil suffered lung disease and hormone deficiencies.

In a report released this week, a team of researchers led by National Ocean and Atmospheric Administration scientists is reporting a high rate of reproductive failure in dolphins exposed to the 2010 spill. The biologists monitored bottlenose dolphins in heavily-oiled Barataria Bay for five years following the spill. Continue reading “Study documents high rate of reproductive failure in dolphins hit by Deepwater Horizon oil spill”

Environment: EPA eyes new rules for oil spill dispersants

Public comment sought on proposed standards

Dispersant being applied to the Gulf of Mexico.
Dispersant being applied to the Gulf of Mexico.

Staff Report

FRISCO — When BP’s failed Deepwater Horizon drilling rig spewed millions of gallons of crude oil in the Gulf of Mexico nearly five years ago, the emergency response included the massive use of oil dispersants, chemicals meant to break up potential oil slicks before they reached the shoreline. Continue reading “Environment: EPA eyes new rules for oil spill dispersants”

Environment: $627 million restoration plan finalized to repair some of the damage from the Deepwater Horizon disaster

Barrier islands, shorelines, dunes, underwater grasses and oyster beds targeted for restoration

A NASA satellite image shows the oil slick from the Deepwater Horizon disaster spreading across the northern Gulf of Mexico in late May, 2010.
A NASA satellite image shows the oil slick from the Deepwater Horizon disaster spreading across the northern Gulf of Mexico in late May, 2010.

Staff Report

FRISCO — Nearly four years after BP’s Deepwater Horizon drilling operation disastrously failed and spewed millions of gallons of oil into the Gulf of Mexico, NOAA and its partners have finalized a $627 million restoration plan. The formal record of decision released last week authorizes 44 projects to restore barrier islands, shorelines, dunes, underwater grasses and oyster beds.

This announcement marks the largest suite of Gulf early restoration projects selected thus far in the wake of the 2010 oil spill. The projects aim to address a range of injuries to natural resources and the subsequent loss of recreational use. Details of restoration efforts are outlined in the Final Programmatic and Phase III Early Restoration Plan and Early Restoration Programmatic Environmental Impact Statement. Continue reading “Environment: $627 million restoration plan finalized to repair some of the damage from the Deepwater Horizon disaster”