Underwater robot to collect information about Deepwater Horizon spill

Written by: Super Admin
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Washington, May 30 (ANI): The Monterey Bay Aquarium Research Institute (MBARI) in the US has sent an underwater robot to the Gulf of Mexico to gather information about the Deepwater Horizon spill.

This information will be passed on to the National Oceanic and Atmospheric Administration (NOAA).

Although satellites and aircraft can help show the extent of the spill at the surface, MBARI's autonomous underwater vehicle (AUV) will help researchers understand the nature and extent of any plumes of oil that may be hidden beneath the surface of the ocean.

Autonomous underwater vehicles are robotic, untethered submersibles that are programmed at the surface, then navigate through the water on their own, collecting data as they go.

The MBARI AUV can measure physical characteristics of the water, such as temperature, salinity, and dissolved oxygen, detect chlorophyll from microscopic marine algae, and measure concentrations of small particles (or oil droplets) in the water.

This AUV is unique in that it carries "gulper" samplers that can collect up to ten 1.8-liter water samples while travelling through the water (or through the plume in this case).

The AUV also uses cutting-edge artificial intelligence software to decide where to go and when to collect its water samples.

Engineers can program the on-board computers to help the AUV find a plume and then map its boundaries, as well as take water samples both within and outside the plume.

After the AUV is recovered, its water samples will be analysed for a variety of chemicals associated with the oil and dispersants.

These samples may also be subjected to DNA analysis to determine what types of algae, bacteria, or other micro organisms are present.

This MBARI AUV can dive to 1,500 meters (5,000 feet) below the surface-deep enough to collect water samples near the seafloor in the vicinity of the oil spill.

The vehicle typically follows a "roller-coaster" path through the water, which allows its instruments to monitor a cross-section of the ocean.

MBARI engineers and scientists have been developing this AUV for almost a decade, and added its water-collection capability in 2007.

One of the team's goals has been to replace expensive shipboard measurements with information collected automatically by the AUV.

The vehicle has been used to study red tides and other algal blooms and to understand and perform long-term water quality monitoring.

The MBARI team is excited by the prospect that their vehicle may be useful in understanding the Gulf oil spill. Information about where oil is spreading beneath the ocean surface will help biologists and others understand the effects of this catastrophic event.

MBARI President and Chief Executive Officer Chris Scholin said: MBARI's AUV and gulper system provides a surveillance and sample collection capability that is complementary to other tools being deployed to understand the fate of the subsurface plume of oil and dispersant.

"Coordinating this response in partnership with government and academic institutions is not only important for providing much-needed fundamental information on the spill and its impacts, but also serves as a valuable learning experience for understanding how to respond to such incidents in the future." (ANI)

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