Page 3 - Ocean Drilling Program News Today

 E-Mail IMAGE: Ocean-bottom sediments, shown after materials such as leaf wax chemicals have been extracted. These sediments -- collected in 1985 by the Ocean Drilling Program -- were processed recently at UB... view more  Credit: Douglas Levere / University at Buffalo BUFFALO, N.Y. -- Over hundreds of thousands of years, sediments from southern Greenland have been making their way into the ocean, where theyre carried by underwater currents to a location in the Labrador Sea called the...

19). Decreasing cell concentrations after drilling has also been observed in other CORKs [Juan de Fuca ridge flank; ( 21)] and groundwater well systems ( 5)], low cell counts likely indicate that the North Pond system had recovered from drilling and that the 2017 fluids (and resulting data) are the best representation of microbial activity in the cold, oxic crustal subseafloor aquifer to date. Table 1 North Pond CORK fluids and bottom water values for cell enumeration, dissolved inorganic carbo...

reconstructed from sub-ice shelf and offshore sediments J.A. Smith; C.-D. Hillenbrand; C. Subt; B.E. Rosenheim; T. Frederichs ... Abstract: Because ice shelves respond to climatic forcing over a range of time scales, from years to millennia, an understanding of their long-term history is critically needed for predicting their future evolution. We present the first detailed reconstruction of the Larsen C Ice Shelf (LCIS), eastern Antarctic Peninsula (AP), based on data from sediment cores recove...

 E-Mail IMAGE: Using Sandia National Laboratories longstanding expertise in probabi­listic modeling and machine learning algorithms from the U.S. Naval Research Laboratory, the researchers determined the probabil­ity of finding methane hydrate off the... view more  Credit: Image courtesy of William Eymold/Sandia National Laboratories RALEIGH, N.C. -- Methane hydrate, an ice-like material made of compressed natural gas, burns when lit and can be found in some regions of the seafloor ...

© Justine Sauvage Marine sediment samples used in the irradiation experiments.A team of researchers from the University of Rhode Islands Graduate School of Oceanography and their collaborators have revealed that the abundant microbes living in ancient sediment below the seafloor are sustained primarily by chemicals created by the natural irradiation of water molecules. The team discovered that the creation of these chemicals is amplified significantly by minerals in marine sediment. In contras...

Northwestern Now Shelled organisms helped buffer ocean acidification by consuming less alkalinity from seawater Gabriella Kitch works with samples from an ocean sediment core. Microscopic fossilized shells are helping geologists reconstruct Earth’s climate during the Paleocene-Eocene Thermal Maximum (PETM), a period of abrupt global warming and ocean acidification that occurred 56 million years ago. Clues from these ancient shells can help scientists better predict future warming and ocean ac...

One of the largest ecosystems on Earth lives beneath the seafloor and eats radiation byproducts Thats pretty metal! Researchers at the University of Rhode Island’s (URI) Graduate School of Oceanography report that a whole ecosystem of microbes below the sea dines not on sunlight, but on chemicals produced by the natural irradiation of water molecules. Image credits Ely Penner. Whole bacterial communities living beneath the sea floor rely on a very curious food source: hydrogen released by irr...

 E-Mail Credit: Photo courtesy Justine Sauvage NARRAGANSETT, R.I. - February 26, 2021 - A team of researchers from the University of Rhode Islands Graduate School of Oceanography and their collaborators have revealed that the abundant microbes living in ancient sediment below the seafloor are sustained primarily by chemicals created by the natural irradiation of water molecules. The team discovered that the creation of these chemicals is amplified significantly by minerals in marine sediment...