Approximately 75,000 years ago, a massive explosive eruption from a volcano in western Indonesia (Toba caldera) coincided with the onset of the Earth’s last Ice Age.
In the current issue of Geology, University of Rhode Island geological oceanographers Meng-Yang Lee and Steven Carey; Chang-Hwa Chen and Yoshiyuki Iizuka of the Academia Sinica in Taiwan; and Kuo-Yen Wei of National Taiwan University describe their investigation into the possibility that eruptions from the Toba caldera on the island of Sumatra caused a severe "volcanic winter" and the initiation of a glacial period.
The magnitude of the oldest Toba eruptions had not previously been documented due to the difficulty in recognizing their widespread erupted products in marine sediments. Lee and the team of scientists present new data on the distribution of volcanic ash from the oldest Toba eruption in Ocean Drilling Program cores and piston cores in the South China Sea and Indian Ocean. By using high-resolution litho-, magneto-, and oxygen isotope stratigraphic records, the geologists were able to clarify the correlation between distribution patterns in the cores, refine the age of the layers, and reestimate the eruptive volume of the early eruption of Toba.
Lisa Cugini | URI
New Measurement Device: Carbon Dioxide As Geothermometer
21.05.2019 | Universität Heidelberg
Cause for variability in Arctic sea ice clarified
14.05.2019 | Max-Planck-Institut für Meteorologie
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...
Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future
When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...
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