A. Roberts

Publications397
h-index68
Citations18,799
Highly Influential Citations1,283
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First‐order reversal curve diagrams: A new tool for characterizing the magnetic properties of natural samples
Paleomagnetic and environmental magnetic studies are commonly conducted on samples containing mixtures of magnetic minerals and/or grain sizes. Major hysteresis loops are routinely used to provide…
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Sea-level and deep-sea-temperature variability over the past 5.3 million years
TLDR
It is found that deep-sea temperature and sea level generally decreased through time, but distinctly out of synchrony, which is remarkable given the importance of ice-albedo feedbacks on the radiative forcing of climate.
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Rapid coupling between ice volume and polar temperature over the past 150,000 years
TLDR
An independent dating of a continuous, high-resolution sea-level record in millennial-scale detail throughout the past 150,000 years is presented and it is found that the timing of ice-volume fluctuations agrees well with that of variations in Antarctic climate and especially Greenland climate.
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Characterizing interactions in fine magnetic particle systems using first order reversal curves
We demonstrate a powerful and practical method of characterizing interactions in fine magnetic particle systems utilizing a class of hysteresis curves known as first order reversal curves. This…
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Antarctic temperature and global sea level closely coupled over the past five glacial cycles
Sea level has varied by over one hundred metres across glacial–interglacial cycles over the past 520,000 years. An extended sea-level reconstruction shows a strong coupling between these sea-level…
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Continental ice in Greenland during the Eocene and Oligocene
The Eocene and Oligocene epochs (∼55 to 23 million years ago) comprise a critical phase in Earth history. An array of geological records supported by climate modelling indicates a profound shift in…
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Three million years of monsoon variability over the northern Sahara
Abstract We present a 3 million year record of aeolian dust supply into the eastern Mediterranean Sea, based on hematite contents derived from magnetic properties of sediments from Ocean Drilling…
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Magnetic properties of sedimentary greigite (Fe3S4)
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Magnetostratigraphic calibration of Eocene–Oligocene dinoflagellate cyst biostratigraphy from the Norwegian–Greenland Sea ☆
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Environmental magnetism: Past, present, and future
Environmental magnetism involves the application of rock and mineral magnetic techniques to situations in which the transport, deposition, or transformation of magnetic grains is influenced by…
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