It is by far the most abundant river in the world. One fifth of the Earth’s entire freshwater supply flows from its mouth into the Atlantic pushing the ocean’s salt water several hundred kilometers out to sea. In April, Andrea Koschinsky, Professor of Geochemistry at Jacobs University, will travel to the estuary of the Amazon – as head of a recently approved, interdisciplinary research project on board the research ship, Meteor.
The Amazon River is almost 7,000 km long and is not only tremendously abundant but it also transports large quantities of trace metals such as iron and copper and dissolved organic materials. It is these materials that interest the team comprising Andrea Koschinsky, Prof. Thorsten Dittmar from the University of Oldenburg and Prof. Martin Frank from GEOMAR - Helmholtz Centre for Ocean Research Kiel as well as the four Brazilian partner organizations.
“We want to gain a better understanding of the material cycle in the ocean,” says Andrea Koschinsky about the M 147 research trip’s aims. “We will only be able to reliably predict the human impact on this cycle if we succeed in this”. Trace elements such as carbon, nitrogen and phosphorus play an important role in the ocean as they are essential elements for the formation of biomass. However, all life needs iron – even the smallest marine organism requires it.
The Amazon River carries many elements into the sea, including iron. Part of the elements flocculate when the freshwater meets the salt water and mixes, they drop down and settle on the bottom of the river mouth as sediment.
However, another part remains in the water and forms part of the material cycle in the ocean. On their research trip, the scientists want to find out exactly how these processes work, their interdependencies, interactions and quantities. Their focus is on the flow of iron as well as other important trace elements and organic molecules.
The scientists will take the first water samples from the river where the freshwater is the purest. The ship will then follow the course of the river via the brackish salt water and freshwater water system until its keel reaches the pure seawater. Sediment samples will taken from the seabed, from the river at a depth of up to 100 m and from the sea at a depth of up to 2,000 m.
The findings will also be used to record and understand disruptions to natural geochemical and biological process in the marine environment caused by people. Humans are intervening in the fragile ecosystem of the Amazon and changing it significantly in particular by building dams, deforestation and intensive agriculture.
The joint project financed by the German Research Foundation (DFG) is part of the international GEOTRACES program. Its aim is to record the distribution of trace elements and isotopes in the ocean and to understand the processes that control this distribution. The data collected will, among other things, contribute to a better understanding of the effects of climate change on the oceans.
Questions will be answered by:
Prof. Dr. Andrea Koschinsky | Professor of Geosciences
email@example.com | Tel: +49 421 200-3567
About Jacobs University:
Jacobs University is a private, independent, English-medium university in Bremen. Young people from all over the world study here in preparatory, Bachelor, Master, and PhD programs. Internationality and transdisciplinarity are special features of Jacobs University: research and teaching don’t just pursue a single approach, they address issues from the perspectives of multiple disciplines. This principle makes Jacobs graduates highly sought-after new talents who successfully strike out on international career paths.
More information: www.jacobs-university.de
Thomas Joppig | Brand Management, Marketing & Communications
firstname.lastname@example.org | Tel.: +49 421 200-4504
Thomas Joppig | idw - Informationsdienst Wissenschaft
PR of MCC: Carbon removal from atmosphere unavoidable for 1.5 degree target
22.05.2018 | Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH
Monitoring lava lake levels in Congo volcano
16.05.2018 | Seismological Society of America
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.
Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
22.05.2018 | Life Sciences
22.05.2018 | Life Sciences
22.05.2018 | Life Sciences