Events
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JSG | BEG | UTIG | EPS |
UTIG Brown Bag Talk: Naoma McCall & Sean Gulick
Start:November 1, 2017 at 12:00 pm
End:
November 1, 2017 at 1:00 pm
Location:
PRC ROC Room 1.603
Contact:
Eric Petersen, eric_petersen@utexas.edu
Informal weekly presentations by UTIG students, researchers. Bring your lunch!
DeFord Lecture: Brian Schubert
Start:November 2, 2017 at 4:00 pm
End:
November 2, 2017 at 5:00 pm
Location:
JGB 2.324
UTIG Seminar Series: David Kring (Lunar and Planetary Institute)
Start:November 3, 2017 at 10:30 am
End:
November 3, 2017 at 11:30 am
Location:
PRC ROC Room 1.603
Contact:
Anisa Abdulkader, aabdulkader@ig.utexas.edu, 512-471-0417
Watch live: http://bit.ly/2gD1Hpy
Title: The Chicxulub Crater and Implications for the Impact – Origin of Life Hypothesis
Abstract: The ~180 km-diameter Chicxulub impact crater, located on the Yucatán Peninsula of Mexico, is famously linked to the extinction of dinosaurs and most other forms of life on Earth nearly 66 million years ago. The International Ocean Discovery Program and International Continental Scientific Drilling Program recently teamed up to drill into the crater to test models of how such large impact basins form and how the hydrothermal systems they harbor may have provided critical biological niches. While past attention has often been on the environmental calamity the Chicxulub impact produced during the first day of the Cenozoic, it is now recognized that the crater and the hydrothermal system it hosted may be proxies for the geological processes that shaped the Hadean and the earliest evolution of life on Earth.
Learn more about David Kring: http://www.lpi.usra.edu/lpi/kring/
UTIG Host: Gail Christeson
UTIG Brown Bag Talk: Cliff Frohlich
Start:November 8, 2017 at 12:00 pm
End:
November 8, 2017 at 1:00 pm
Location:
PRC ROC Room 1.603
Contact:
Eric Petersen, eric_petersen@utexas.edu
Informal weekly presentations by UTIG students, researchers. Bring your lunch!
DeFord Lecture: Hrvoje Measki
Start:November 9, 2017 at 4:00 pm
End:
November 9, 2017 at 5:00 pm
Location:
JGB 2.324
UTIG Seminar Series: Andrew Kemp (Tufts University)
Start:November 10, 2017 at 10:30 am
End:
November 10, 2017 at 11:30 am
Location:
PRC ROC Room 1.603
Contact:
Anisa Abdulkader, aabdulkader@ig.utexas.edu, 512-471-0417
Watch live: http://bit.ly/2i08feE
Title: Climate and sea-level variability during the past ~ 2000 years
Abstract: Common Era relative sea-level trends on the margins of the North Atlantic Ocean vary through time and across space as a result of simultaneous global (basin-wide)-, regional- (linear and non linear), and local-scale processes. A growing suite of relative sea-level reconstructions derived from dated salt-marsh (and mangrove) sediment on the Atlantic coast of North America provides an opportunity to quantify the contributions from several physical processes to Common Era sea-level trends. In particular, this coastline is susceptible to relative sea-level changes caused by melting of the Greenland Ice Sheet and redistribution of existing ocean mass on timescales of days to centuries by evolving patterns and strengths of atmospheric and oceanic circulation. Spatio-temporal analysis shows that glacio-isostatic adjustment was the primary driver of sea-level change. The global signal is dominated by the onset of anthropogenic sea-level rise in the late 19th century, which caused the 20th century to experience a faster rate of rise than any of the preceding 26 centuries. Differentiating between regional non-linear and local-scale processes is challenging using an inherently sparse network of reconstructions. However, we show that sites south of Cape Hatteras have sea-level histories distinct to those from more northward locations and propose that this spatial pattern is best explained by dynamic processes.
Learn more about Andrew Kemp: http://eos.tufts.edu/people/kemp.htm
UTIG Host: Fred Taylor
Annual Tailgate Party
Start:November 11, 2017 at 3:00 pm
End:
November 11, 2017 at 5:00 pm
Location:
Holland Family Student Center, Jackson Geological Sciences Building
Contact:
Kristen Tucek, ktucek@jsg.utexas.edu, 512.471.2223
Join us for the Annual Tailgate Party at the Jackson School for the Longhorns vs. Kansas Jayhawks football game.
UTIG Brown Bag Talk: Lawrence Lawver
Start:November 15, 2017 at 12:00 pm
End:
November 15, 2017 at 1:00 pm
Location:
PRC ROC Room 1.603
Contact:
Eric Petersen, eric_petersen@utexas.edu
Informal weekly presentations by UTIG students, researchers. Bring your lunch!
DeFord Lecture: Kitty Milliken
Start:November 16, 2017 at 4:00 pm
End:
November 16, 2017 at 5:00 pm
Location:
JGB 2.324
Contact:
Elizabeth Catlos, ejcatlos@jsg.utexas.edu
UTIG Seminar Series: Yuko Okumura (UTIG)
Start:November 17, 2017 at 10:30 am
End:
November 17, 2017 at 11:30 am
Location:
PRC ROC Room 1.603
Contact:
Anisa Abdulkader, aabdulkader@ig.utexas.edu, 512-471-0417
Watch online: http://bit.ly/2zMrPFo
Title: El Niño and La Niña: Asymmetry, Impact and Decadal Variability
Abstract: The equatorial Pacific Ocean undergoes episodic warming (El Niño) and cooling (La Niña) at intervals of 3-8 years, accompanied by changes in surface winds. This so-called El Niño-Southern Oscillation (ENSO) phenomenon arises from dynamic and thermodynamic feedbacks between the tropical ocean and atmosphere, and affects weather patterns around the world through atmospheric teleconnections.
El Niño and La Niña are not a simple mirror image and exhibit significant differences in their spatial patterns and temporal evolution, due to nonlinearities in the tropical ocean-atmosphere system. In particular, most strong El Niño events terminate after one year whereas La Niña events that follow tend to last 2 years or longer. Observational analysis shows that these multi-year La Niña events have persistent influences on atmospheric circulation and drought conditions across the southern tier of the United States. La Niña’s impact becomes stronger and more extensive in the second year, compared to the first year, despite weakening in the equatorial Pacific cooling. This paradoxical strengthening of La Niña’s impact in the second year is related to subtle changes in the pattern of tropical Pacific cooling.
The ENSO is thus a key source of climate variability on interannual timescales. The amplitude of ENSO, however, is known to modulate on decadal timescales. Analysis of a long climate model simulation shows that not only the amplitude but also other properties of ENSO vary systematically in association with decadal changes in the background state of tropical Pacific climate. For example, when the eastern tropical Pacific becomes warmer relative to the western tropical Pacific, the ENSO amplitude increases and El Niño and La Niña become more asymmetric, with increased duration of La Niña. When the tropical Pacific warms across the basin, on the other hand, El Niño becomes more frequent and lasts longer. A comparison of hierarchical climate model simulations suggests positive feedbacks between decadal changes in the background state and the ENSO.
Learn more about Yuko Okumura
UTIG Host: Pedro Di Nezio
UTIG Brown Bag Talk: Benjamin Wagman
Start:November 29, 2017 at 12:00 pm
End:
November 29, 2017 at 1:00 pm
Location:
PRC ROC Room 1.603
Contact:
Eric Petersen, eric_petersen@utexas.edu
Informal weekly presentations by UTIG students, researchers. Bring your lunch!
Planetary Habitability Seminar SeriesApril, 22 2024Time: 1:00 PM - 2:00 PMLocation: PMA 15.216B UT Center for Planetary Systems Habitability Seminar Series. See website for speaker schedule and more details: View Events Join remotely: https://utexas.zoom.us/j/94052130734 In person: Classroom 15.216B, Physics, Math and Astronomy Bldg. UT Austin, Department of Astronomy 2515 Speedway, Stop C1400 Austin, Texas 78712-1205 |
UTIG Discussion Hour: Nicholas Montiel - PhD Talk (UTIG)April, 23 2024Time: 2:00 PM - 3:00 PMLocation: ROC 2.201 |
UTIG Seminar Series: Cornelia Rasmussen, UTIGApril, 26 2024Time: 10:30 AM - 11:30 AMLocation: PRC 196/ROC 1.603 Speaker: Cornelia Rasmussen, Research Associate, University of Texas Institute for Geophysics Host: Krista Soderlund Title: The Emerging Field Of Position-Specific Isotope Analysis: Applications in chemical forensics, exobiology, geo- and environmental sciences Abstract: Complex organics can be found all over our solar system and within each living thing on our planet, be it as part of its physiology or as a contaminant. However, different processes can lead to the formation of chemical identical molecules. This makes answering a number of scientific questions challenging. One example is distinguishing between biotic and abiotic molecules, hence hindering life detection on early Earth but especially on other planetary bodies, such as on Mars, Titan, Enceladus and on meteorites where organics have been detected. Moreover, tracing molecules as they move through the environment can be demanding, yet is essential in studying the flow of organic molecules as well as correlating pollutants with their source. Novel tools to address these challenges are currently being developed. Especially, the emerging field of position-specific isotope analysis is beginning to grant access to the unique intramolecular carbon (13C/12C) isotope fingerprint preserved in complex molecules. This fingerprint can be applied in various scientific disciplines, ranging from forensics to exobiology, geo- and environmental sciences, including geo health. Nuclear magnetic resonance spectroscopy (NMR) has the potential to become a key player in this research area, as it allows the analysis of organics within complex mixtures, all without the need to fragment the molecule into single carbon units or the combustion of the molecule of interest. We have been developing several NMR tools that allow us to investigate the intramolecular carbon isotope distribution within various molecule classes and to test the central hypothesis that the position-specific carbon isotope distribution within complex organics depends on a molecule’s source and formation history. |
Planetary Habitability Seminar SeriesApril, 29 2024Time: 1:00 PM - 2:00 PMLocation: PMA 15.216B UT Center for Planetary Systems Habitability Seminar Series. See website for speaker schedule and more details: View Events Join remotely: https://utexas.zoom.us/j/94052130734 In person: Classroom 15.216B, Physics, Math and Astronomy Bldg. UT Austin, Department of Astronomy 2515 Speedway, Stop C1400 Austin, Texas 78712-1205 |
UTIG Discussion Hour: Kristian Chan - PhD Talk (UTIG)April, 30 2024Time: 2:00 PM - 3:00 PMLocation: ROC 2.201 |