Drilling Greenland Bedrock Shows Rise to Life in the Deep Biosphere
into lead. The dating gave ages of 64-75 million years”, says Henrik Drake, Associate Professor at Linnaeus University, Sweden, and lead author of the study.These ages overlap with tectonic events related to the early stages, or precursors, of the opening of the Atlantic Ocean and the Labrador Sea. This suggests that deep fracture networks in western Greenland opened and were colonized by microorganisms, such as sulfate reducers, during these events. The movements of the continents have thus influenced how the deep biosphere has been colonized.Henrik Drake explain the findings as chemical
New Record Set in Unmanned Vessel Data Collection
for oceanography as it opens up a new way of collecting more data, more regularly, which is key to improving climate predictions and helping us to prepare for what the future may hold.”Last year SAMS deployed two BPRs on the seabed of the Atlantic Ocean: in the Rockall Trough and in the Labrador Sea, east of Canada. Based on the weight of the water above it, the instrument can detect a change in pressure that is the equivalent to a sea-surface height change of one centimeter.By comparing the sea surface height on the western and eastern flanks of the Atlantic Ocean, oceanographers can calculate
Sonardyne Helps Study Ocean Currents for Climate Insights
, the ocean’s absorption of carbon and European weather.To measure the AMOC’s impact on our changing climate, scientists from the Scottish Association for Marine Science (SAMS) in Oban have deployed two deep-sea Bottom Pressure Recorders (BPRs), one in the north-east Atlantic and one in the Labrador Sea, to record regular changes in sea surface height.The two Fetch AZA BPRs, developed and built by Sonardyne, have been placed thousands of meters below the sea surface where they will record sea surface height to the nearest centimeter, giving the researchers a detailed comparison between the two
ASL Hires Chawarski as Biological Oceanographer
of Fisheries and Oceans Canada (DFO), and the Greenland Institute for Natural Resources.His technical expertise in scientific echo sounders and passion for marine ecology has brought him to some of the far reaches of the ocean. From 2018-2020, Chawarski worked with DFO to develop studies in the Labrador Sea as a part of the Integrated Studies & Ecosystem Characterization of the Labrador Sea Deep Ocean (ISECOLD). His work helped advance methods of eDNA to detect deep-sea fishes and explore the mechanisms that form biogeographic boundaries for fish communities at high-latitudes. In 2019, he took
Forum's Arctic Research ROV Completes Sea Trials
achieving complex underwater procedures.”“This is the second ROV we have delivered to Université Laval and we are thrilled it has passed its sea trials and the organization is now in a position to begin studying the deep-water corals and cold deep eco-systems of the northern Labrador Sea and Baffin Bay.”The new Comanche ROV was manufactured at FET’s facility at Kirkbymoorside, Yorkshire and replaces FET’s previously utilised Super Mohawk ROV.Since 2003, CCGS Amundsen has spent over 2,500 research days at sea and accommodated over 1,800 scientists, technicians
Forum ROV to Support Arctic Research
also supplied by Forum.“The Comanche ROV will represent a pivotal equipment of the research icebreaker CCGS Amundsen. In 2020, it will be deployed at several locations spanning a latitudinal gradient from 58° to 77°N to study deep-water corals and cold seep eco-systems of the northern Labrador Sea and Baffin Bay. The project will generate critical knowledge of biodiversity and marine habitats needed for key ocean conservation initiatives in Canada”, said Dr. Alexandre Forest, Executive Director of Amundsen Science.The new Comanche ROV will be manufactured at Forum’s facility
Waters West of Europe Drive Ocean Overturning
Iceland and Irminger basins. In a departure from the prevailing scientific view, the study shows that most of the conversion from warm to cold water—or ‘overturning’ and its month-to-month variability—is occurring in regions between Greenland and Scotland, rather than in the Labrador Sea off Canada, as many past modeling studies have suggested.Overturning variability in this northeastern section of the North Atlantic was seven times greater than in the Labrador Sea, and it accounted for 88 percent of the total variance documented across the entire North Atlantic over the 21-month
Full-Depth Current Profiling Around the Global Ocean
monitored boundary currents off Canada at 53°N. Across their persistent section defined by 3–5 moorings, the scientists repeated 12–15 LADCP stations during 13 cruises. As a result, data from 150 LADCP stations supplemented the moorings to describe the overturning contribution from the Labrador Sea. Strong currents were seen at various levels. In particular, the LADCP data showed a high-speed core near the deep-sea floor. Its waters had originated in the Nordic Seas.Full-depth LADCP profiles are well-resolved vertically and can have finer horizontal spacing than a moored array. The flexibility
TGS, PGS Team Up on Eastern Canada Seismic
Eastern Canada with plans to acquire more than 36,000 km of 2D seismic data, in partnership with PGS, utilizing two vessels during the 2016 acquisition season. The M/V Sanco Spirit and M/V Atlantic Explorer, utilizing the PGS GeoStreamer technology, will acquire seismic and gravity data in the Labrador Sea, Newfoundland Orphan-Flemish Pass basins and Grand Banks areas. Data acquisition will commence during late May 2016. Pre-processing of the initial GeoStreamer signal will be performed by PGS following which TGS will perform data processing with final data available to clients in Q3 2017
December 2024
