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
New studies increase confidence in NASA's measure of Earth's temperature
24.05.2019 | NASA/Goddard Space Flight Center
New Measurement Device: Carbon Dioxide As Geothermometer
21.05.2019 | Universität Heidelberg
A new assessment of NASA's record of global temperatures revealed that the agency's estimate of Earth's long-term temperature rise in recent decades is accurate to within less than a tenth of a degree Fahrenheit, providing confidence that past and future research is correctly capturing rising surface temperatures.
The most complete assessment ever of statistical uncertainty within the GISS Surface Temperature Analysis (GISTEMP) data product shows that the annual values...
Physicists at the University of Basel are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an electron being present in a space. This allows improved control of electron spins, which could serve as the smallest information unit in a future quantum computer. The experiments were published in Physical Review Letters and the related theory in Physical Review B.
The spin of an electron is a promising candidate for use as the smallest information unit (qubit) of a quantum computer. Controlling and switching this spin or...
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
24.05.2019 | Physics and Astronomy
24.05.2019 | Medical Engineering
24.05.2019 | Life Sciences