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Tag: John Tarduno

New data helps explain recent fluctuations in Earth’s magnetic field

New data helps explain recent fluctuations in Earth’s magnetic field

February 27, 2018

Using new data gathered from sites in southern Africa, researchers have extended their record of Earth’s magnetic field back thousands of years to the first millennium.

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Tarduno awarded medal for paleomagnetic research

Tarduno awarded medal for paleomagnetic research

March 21, 2017

The European Geosciences Union awarded its 2017 Petrus Peregrinus Medal to John Tarduno, a professor of geophysics, in recognition of his research on the evolution of the early Earth’s magnetic field.

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Earth’s magnetic field—reversing or fluctuating?

Earth’s magnetic field—reversing or fluctuating?

February 8, 2017

For the last 160 years, the Earth’s magnetic field has been weakening. In an essay shared on Newsweek, professor John Tarduno explains archaeomagnetism research, in which geophysicists team up with archaeologists to study the effects of these changes.

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New prehistoric bird species discovered

New prehistoric bird species discovered

December 16, 2016

A team of Rochester geologists has discovered a new species of bird in the Canadian Arctic. At approximately 90 million years old, the bird fossils are among the oldest avian records found in the northernmost latitude.

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International research team to explore whether the loss of CO2 caused earth to cool 3 million years ago

International research team to explore whether the loss of CO2 caused earth to cool 3 million years ago

September 28, 2015

The National Science Foundation (NSF) has awarded $4.24 million to Carmala Garzione and John Tarduno, both professors of earth and environmental sciences, to launch this joint U.S.-China research project.

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Ancient crystals show Earth’s magnetic field switched on early

Ancient crystals show Earth’s magnetic field switched on early

August 5, 2015

To probe the origin of Earth’s magnetism, a team led by John Tarduno retrieved rock samples from the Jack Hills in Western Australia – home to some of the oldest rocks on the planet.

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Earth magnetic shield is older than previously thought

Earth magnetic shield is older than previously thought

July 31, 2015

The Earth’s magnetic field, which shields the atmosphere from harmful radiation, is at least four billion years old, according to scientists.

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Researchers find that Earth’s magnetic shield is 500 million years older than previously thought

Researchers find that Earth’s magnetic shield is 500 million years older than previously thought

July 30, 2015

Since 2010, the best estimate of the age of Earth’s magnetic field has been 3.45 billion years. But now the Rochester researcher responsible for that finding has new data showing the magnetic field is far older.

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First measurements taken of South Africa’s iron age magnetic field history

First measurements taken of South Africa’s iron age magnetic field history

July 28, 2015

Combined with the current weakening of Earth’s magnetic field, the data suggest that the region of Earth’s core beneath southern Africa may play a special role in reversals of the planet’s magnetic poles.

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