Mineral raw materials are in great demand, which is why previously unused deposits are also coming into focus. Economically interesting quantities of nickel, cobalt, copper and other precious metals are contained in manganese nodules that have formed on the seabed over millions of years. An international project funded by the Federal Ministry of Education and Research (BMBF) and involving scientists from Jacobs University Bremen is investigating the environmental effects and risks of a possible mining of these nodules in the deep-sea, 4000 meters below sea level.
The deep-sea is a vast, still little studied area where ecological processes are slow due to low temperatures, darkness and limited food supply. The ecosystem therefore needs centuries to recover from disturbances.
Manganese nodules on the sea floor in the Clarion Clipperton zone.
Photo: ROV KIEL 6000, GEOMAR (CC BY 4.0)
Many species have not yet been discovered, and some of the processes that take place in the deep-sea and may have far-reaching effects are not yet fully understood. The chemical balance between the seabed and the water column will also be disturbed by technical intervention.
At the beginning of February 2019, the international team will board the German research vessel "Sonne" in Manzanillo, Mexico. The group of scientists from 32 partner institutions from Germany, the Netherlands, Belgium, Portugal, Italy, Norway, France, Great Britain, Poland, and Jamaica is aiming for the Clarion Clipperton Zone, four days away from the Mexican coast. In this area in the Central Pacific, the researchers will observe and study an industrial deep-sea mining experiment by the Belgian company DEME-GSR.
The mining of manganese nodules from the seabed influences the surface sediment and whirls up soft deep-sea sediments, creating a plume that spreads over long distances before returning to the seabed. The scientists will examine these sediment plumes in real time and take samples from the affected area immediately after the intervention. The researchers will spend a total of three months in the region.
Jacobs University's team, including postdoc Sophie Paul, will focus on metal distribution in the sediment and pore water of the sediment. Its composition allows conclusions to be drawn about the nature and extent of the changes and the effects on biogeochemical cycles. Sediment cores will be sampled in the ship's cold room to preserve the temperature conditions from the deep-sea as best as possible and will be analyzed in the laboratory at Jacobs University after the voyage. The oceanographer Prof. Dr. Laurenz Thomsen from Jacobs University and the postdoc Benjamin Gillard are also involved in the project.
On the part of Jacobs University, this research project is headed by Prof. Dr. Andrea Koschinsky, as was the case with the previous project. From 2015 to 2017, European researchers, including the geochemist's working group, analyzed possible environmental aspects that might arise from future industrial mining activities on the deep-sea floor. Sophie Paul was also involved as a PhD student at the time. Apart from the BMBF, "Mining Impact 2", as the project is called, is financed by the national funding agencies of the other participating countries. The BMBF itself is supporting the project with 442,000 euros for Jacobs University.
About Jacobs University Bremen:
Studying in an international community. Obtaining a qualification to work on responsible tasks in a digitized and globalized society. Learning, researching and teaching across academic disciplines and countries. Strengthening people and markets with innovative solutions and advanced training programs.
This is what Jacobs University Bremen stands for. Established as a private, English-medium campus university in Germany in 2001, it is continuously achieving top results in national and international university rankings. Its more than 1,400 students come from more than 100 countries with around 80% having relocated to Germany for their studies. Jacobs University’s research projects are funded by the German Research Foundation or the EU Research and Innovation program as well as by globally leading companies.
For more information: https://www.jacobs-university.de
Prof. Dr. Andrea Koschinsky | Professor of Geosciences
email@example.com | Tel: +49 421 200-3567
Thomas Joppig | idw - Informationsdienst Wissenschaft
Geochemists measure new composition of Earth’s mantle
17.09.2019 | Westfälische Wilhelms-Universität Münster
Low sea-ice cover in the Arctic
13.09.2019 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
How long the battery of your phone or computer lasts depends on how many lithium ions can be stored in the battery's negative electrode material. If the battery runs out of these ions, it can't generate an electrical current to run a device and ultimately fails.
Materials with a higher lithium ion storage capacity are either too heavy or the wrong shape to replace graphite, the electrode material currently used in...
To process information, photons must interact. However, these tiny packets of light want nothing to do with each other, each passing by without altering the...
Researchers from the Department of Atomically Resolved Dynamics of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg, the University of Hamburg and the European Molecular Biology Laboratory (EMBL) outstation in the city have developed a new method to watch biomolecules at work. This method dramatically simplifies starting enzymatic reactions by mixing a cocktail of small amounts of liquids with protein crystals. Determination of the protein structures at different times after mixing can be assembled into a time-lapse sequence that shows the molecular foundations of biology.
The functions of biomolecules are determined by their motions and structural changes. Yet it is a formidable challenge to understand these dynamic motions.
At the International Symposium on Automotive Lighting 2019 (ISAL) in Darmstadt from September 23 to 25, 2019, the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a provider of research and development services in the field of organic electronics, will present OLED light strips of any length with additional functionalities for the first time at booth no. 37.
Almost everyone is familiar with light strips for interior design. LED strips are available by the metre in DIY stores around the corner and are just as often...
Later during this century, around 2060, a paradigm shift in global energy consumption is expected: we will spend more energy for cooling than for heating....
19.09.2019 | Event News
10.09.2019 | Event News
04.09.2019 | Event News
20.09.2019 | Life Sciences
20.09.2019 | Life Sciences
20.09.2019 | Life Sciences