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Dr. Zhang won Best Paper in Interpretation 2017

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CO2 levels now higher than any time in the last 23 million years

One of the most pressing messages that climate scientists attempt to convey to the public is how today’s CO2 levels compare to those of the Geologic past. Such comparisons can provide public context for current CO2 rise, as well as important information on the response of global temperatures to rising CO2. A new study published in Geology suggests that present-day CO2 levels (412 ppmv) are now likely higher than at any time in at least the last 23 million years!

In this newly published study, a team led by Brian Schubert, Associate Professor in the School of Geosciences at the University of Louisiana at Lafayette, used the remains of dead plants to produce a new record of atmospheric CO2 that spans 23 million years of uninterrupted Earth history. Their findings relied on the nearly continuous record of terrestrial photosynthesis provided by organic matter accumulated from partially decomposed plants.

“When plants grow, the relative amount of the two stable isotopes of carbon, carbon-12 and carbon-13, changes in response to the amount of CO2 in the atmosphere,” says Schubert. “One can therefore measure the relative amount of these two isotopes and calculate the CO2 concentration under which the plants grew.”

The remains of land plants can be used to calculate the amount of CO2 in Earth’s atmosphere. Photo credit: A. Hope Jahren

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Two Graduate Students win the GSA Graduate Research Grant

Please join us in congratulating two of our graduate students who recently won a GSA Graduate Research Grant for 202

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The School of Geosciences wins prestigious Field Camp Award

As our 2020 virtual field camp is kicking off today, our School has just been informed that we are this year's recip

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Dr. Rui Zhang, as an assistant professor with joint appointment between
School of Geosciences and Department of Physics, has recently received
a prestige award of the Best Paper in INTERPRETATION 2017 for his paper
"Time-variant wavelet extraction with a local-attribute-based
timefrequency decomposition for seismic inversion" co-authored with Dr.
Sergey Fomel from the University of Texas at Austin, published in
Volume 5, No. 1, February 2017. The paper introduced an innovative
method to generate time-varying wavelets by using a spectral
decomposition technique, which can benefit seismic inverion for
improved resolution. The award will be presented officially during the
SEG Annual meeting in Anaheim, CA, USA in October.

The journal INTERPRETATION, published quarterly in print and online,
aims to accelerate innovation in interpretation for resource
exploration, exploitation, and environmental stewardship.
Interpretation is jointly published by the American Association of
Petroleum Geologists (AAPG) and the Society of Exploration
Geophysicists (SEG), which publishs about 150 papers every year.

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