Researchers from the National Institute for Undersea Science and Technology sailed late Tuesday on a university research ship to obtain core sediment samples from the seafloor and water samples from the water column in areas near the Deepwater Horizon spill source. They are aboard the Pelican, operated by the Louisiana Universities Marine Consortium, which departed from Cocodrie, La.
The team collected its first samples at midday Wednesday and will continue doing so for several days before returning to port Sunday. The samples are expected to provide important information about the abundance of marine organisms and the presence of chemicals in ocean water and sediments – information for a baseline against which to measure change if those areas are affected by sinking oil.
The ship had been outfitted and ready to support a different NOAA-funded mission: to explore for deep-sea corals and hydrate communities associated with natural gas and oil seeps in the seafloor as well as mud volcanoes and shipwrecks of historical interest. That mission, which would have gone to an area in the Gulf not affected by the spill, was scrubbed in favor of gathering timely and much-needed data close to the spill's source.
"We plan to sample as close to the well head as is safe, reasonable and allowable," said Ray Highsmith, executive director for NIUST and principal investigator for both the original and revised mission. "We then plan to travel northwestward toward our long-term study site at MC-118, with stops for sampling, and then likely, sample northward from MC-118."
MC-118 stands for "Mississippi Canyon Block 118," an area about nine miles from the oil spill's source and the site of the Gulf of Mexico Consortium's Methane Hydrate Seafloor Observatory. In the seven years of the observatory's development, scientists have collected a wealth of geologic, physical, chemical and biological data describing the area – data that could be important in measuring changes there that stem from the spill.
With NOAA's agreement to change missions, scientists and technicians on the ship and ashore worked quickly to adjust staffing and to remove NIUST's two autonomous undersea vehicles from the ship. The AUVs would not have the appropriate sample-collecting capability onboard for the spill-related mission and would not work well in an oiled environment.
The research team brought aboard a large box corer used to take sediment samples from the seafloor and installed a large reel of cable to allow the corer to operate at depths equal to the spill source at 5,000 feet. An instrument called a CTD (Conductivity-Temperature-Depth) will measure the water's salinity, temperature, density and oxygen concentration at various water column depths, while bottles on the CTD obtain water samples.
The team includes chief scientist Arne Diercks, marine technicians Andy Gossett and Matt Lowe, and AUV engineer Max Woolsey, all based at the UM Field Station's undersea vehicle shop; scientist Vernon Asper and AUV engineer Karl MacLetchie both based at the USM facility at Stennis Space Center; and Luke McKay, a student at the University of North Carolina. Diercks and Woolsey work for USM but are stationed at the UM Field Station.
Before the ship departed, scientists and crew members received Hazardous Waste Operations and Emergency Response training as required by OSHA for those involved in the cleanup of hazardous substances. Oil is identified as a hazardous substance.
NIUST is a partnership of the University of Mississippi, University of Southern Mississippi and NOAA, funded by NOAA's Office of Ocean Exploration and Research. Samples from the mission will be studied by NOAA and by labs at the universities of Georgia and North Carolina and other members of the Hydrates Research Consortium.
NOAA works to understand and predict changes in the Earth's environment, from the depths of the ocean to the surface of the sun, and conserves and manages the nation's coastal and marine resources. For more information, go to http://www.noaa.gov or on Facebook at http://www.facebook.com/noaa.lubchenco.
For more information on the Gulf of Mexico Hydrates Research Consortium, go to http://www.olemiss.edu/depts/mmri/programs/gulf_res.html. For more information on NIUST, go to http://www.niust.org/.
Global threat to primates concerns us all
19.01.2017 | Deutsches Primatenzentrum GmbH - Leibniz-Institut für Primatenforschung
Reducing household waste with less energy
18.01.2017 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences