Events
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JSG | BEG | UTIG | EPS |
Climate Forum: Dr. Jonathon Wright, Tsinghua University
Start:January 6, 2014 at 3:00 am
End:
January 6, 2014 at 4:00 am
Location:
Barrow Conference Room, JGB 4.102
Contact:
Kai Zhang, kzkaizhang@gmail.com, 5125206902
“Does the Rainforest Initiate the Wet Season over the Southern Amazon?”
For more information about Dr. Wright and his research, please refer to his personal website: http://www.atm.damtp.cam.ac.uk/people/jw660/index.html; and his research site at: http://www.cess.tsinghua.edu.cn/publish/ess/7687/2012/20120619141317866273695/20120619141317866273695_.html.
Future of Geoscience Undergraduate Education Summit
Start:January 10, 2014
End:
January 12, 2014
View Event
We are hosting an NSF-sponsored summit on the Future of Geoscience Undergraduate Education to engage a broad spectrum of the geoscience community in a comprehensive review of geoscience curriculum, pedagogy, and use of technology with the ultimate, longer-term goal of creating a community vision for undergraduate geoscience education in the future.
Application deadline: Oct. 15, 2013
Future of Geoscience Undergraduate Education Summit
Start:January 10, 2014
End:
January 12, 2014
View Event
We are hosting an NSF-sponsored summit on the Future of Geoscience Undergraduate Education to engage a broad spectrum of the geoscience community in a comprehensive review of geoscience curriculum, pedagogy, and use of technology with the ultimate, longer-term goal of creating a community vision for undergraduate geoscience education in the future.
Application deadline: Oct. 15, 2013
Future of Geoscience Undergraduate Education Summit
Start:January 10, 2014
End:
January 12, 2014
View Event
We are hosting an NSF-sponsored summit on the Future of Geoscience Undergraduate Education to engage a broad spectrum of the geoscience community in a comprehensive review of geoscience curriculum, pedagogy, and use of technology with the ultimate, longer-term goal of creating a community vision for undergraduate geoscience education in the future.
Application deadline: Oct. 15, 2013
Soft Rock Seminar - Mauricio Perillo
Start:January 13, 2014 at 12:00 pm
End:
January 13, 2014 at 1:00 pm
Location:
JGB 3.222
Contact:
Anastasia Piliouras, piliouras@utexas.edu
UTIG Seminar: Serge A. Shapiro, Freie Universitaet Berlin,Germany
Start:January 16, 2014 at 12:00 pm
End:
January 16, 2014 at 1:00 am
Location:
PRC, 10100 Burnet Road, Bldg 196, Rm 1.603, Austin, TX 78758
Contact:
Ian Dalziel, ian@ig.utexas.edu, 512-471-0431
View Event
“Triggered versus Induced Earthquakes and Bounds of the Magnitude Probability”
Abstract:
Fluid-induced seismicity results from an activation of finite rock volumes. The finiteness of perturbed volumes influences frequency-magnitude statistics. We observe that induced large-magnitude events at geothermal and hydrocarbon reservoirs are frequently underrepresented in comparison with the Gutenberg-Richter law. This is an indication that the events are more probable on rupture surfaces
contained within the stimulated volume. Here we theoretically and numerically analyze this effect. We consider different possible scenarios of event triggering: rupture surfaces located completely within or intersecting only the stimulated volume, and derive lower and upper bounds of the probability to induce a given-magnitude event. The bounds depend strongly on the minimum principal size of the
stimulated volume. We compare the bounds with data on seismicity induced by fluid injections in boreholes. Fitting the bounds to the frequency-magnitude distribution provides estimates of a largest expected induced magnitude and a characteristic stress drop, in addition to improved estimates of the Gutenberg-Richter a and b parameters. The observed frequency-magnitude curves seem to follow mainly the lower bound. However, in some case studies there are individual large-magnitude events clearly deviating from this statistic. We propose that such events can be interpreted as triggered ones, in contrast to the absolute majority of the induced events following the lower bound.
UTIG Seminar Series: Adrien Arnulf, UC San Diego
Start:January 17, 2014 at 10:30 am
End:
January 17, 2014 at 11:30 am
Location:
PRC, 10100 Burnet Road, Bldg 196, Rm 1.603, Austin, TX 78758
Contact:
Harm Van Avendonk, harm@ig.utexas.edu, 512-471-0429
View Event
“Anatomy of an Active Submarine Volcano”
Abstract:
Most of the magma erupted at mid-ocean ridges is stored in a mid-crustal melt lens that lies at the boundary between sheeted dikes and gabbros. Nevertheless, images of the magmatic plumbing system linking the melt lens to the overlying eruption site have remained elusive. Here, we have combined full waveform inversion (FWI) and reverse time migration (RTM) of multichannel seismic (MCS) data to present accurate, high-resolution images of the magmatic system underlying Axial volcano that straddles the Juan de Fuca Ridge. Our results reveal a complex melt body beneath the summit caldera, which is approximately 14 km long, 3 km wide and up to 1 km thick. The estimated volume of the reservoir is 29.7 km3, more than two orders of magnitude greater than the erupted magma volumes of the 1998 and 2011 eruptions. Our images show a network of sub-horizontal to shallow dipping (<30?) features that we interpret as the plumbing system facilitating melt transport beneath the central volcano to the 1998 and 2011 eruption sites. These images also reveal a subsiding caldera floor that provides a near perfect trap for the ponding of lava flows, supporting a “trapdoor” mechanism for caldera formation as in some sub-aerial volcanoes.
iPGST Seminar: Ryan Anderson
Start:January 22, 2014 at 12:00 pm
End:
January 22, 2014 at 1:00 pm
Location:
JGB 3.222
Contact:
Michael Prior, mprior@utexas.edu
JSG Research Symposium
Start:January 25, 2014 at 8:30 am
End:
January 25, 2014 at 4:30 pm
Location:
Texas Union Ballroom
Contact:
Mareen LeVoir, levoir@utexas.edu
View Event
Each spring semester, Jackson School students present their research in a day-long poster competition. Throughout the day, judges comprised of faculty, research scientists, and industry representatives evaluate the posters. At the closing ceremony, 1st- and 2nd-place poster awards are presented in the following categories: Undergraduate, Early-Career Graduate, Late-Career Masters, and Late-Career Ph.D. Another award is given to the best represented research group(s). The goal of the Symposium is to provide cross-disciplinary collaboration among graduate students, undergraduate students, and faculty/research scientists at the Jackson School.
Career Center Open House
Start:January 27, 2014 at 9:00 am
End:
January 27, 2014 at 12:00 pm
Location:
JGB 2.112
Contact:
Chelsea Ochoa, chelsea.ochoa@jsg.utexas.edu, 512-232-0893
Stop by the career center for coffee and bagels between 9-Noon and hear about what’s coming up this semester.
Soft Rock Seminar - Xiaoping Liu, China University of Petroleum
Start:January 27, 2014 at 12:00 pm
End:
January 27, 2014 at 1:00 pm
Location:
JGB 3.222
Contact:
Anastasia Piliouras, piliouras@utexas.edu
iPGST: Emily Hernandez-Goldstein
Start:January 29, 2014 at 12:00 pm
End:
January 29, 2014 at 1:00 pm
Location:
JGB 3.222
Contact:
Michael Prior, mprior@utexas.edu
UTIG Seminar Series: Jeroen Tromp, Princeton University
Start:January 31, 2014 at 10:30 am
End:
January 31, 2014 at 11:30 am
Location:
PRC, 10100 Burnet Road, Bldg 196, Rm 1.603, Austin, TX 78758
Contact:
Omar Ghattas, omar@ices.utexas.edu, 512-232-4304
View Event
“Toward Exascale Seismic Imaging: Taming Workflow and I/O Issues”
Abstract:
Providing a better understanding of the physics and chemistry of Earth’s interior through numerical simulations has always required tremendous computational resources. Post-petascale supercomputers are now available to solve complex scientific problems that were thought unreachable a few decades ago. They also bring a cohort of concerns tied to obtaining optimum performance. Several issues are currently being investigated by the HPC community. These include energy consumption, fault resilience, scalability of the current parallel paradigms, workflow management, I/O performance and feature extraction with large datasets. In this presentation, we focus on the last three issues.
In the context of seismic imaging, in particular for simulations based on adjoint methods, workflows are well defined. They consist of a few collective steps (e.g., mesh generation or model updates) and of a large number of independent steps (e.g., forward and adjoint simulations of each seismic event, pre- and postprocessing of seismic traces).
The greater goal is to reduce the time to solution, that is, obtaining a more precise representation of the subsurface as fast as possible. This brings us to consider both the workflow in its entirety and the parts comprising it. The usual approach is to speedup the purely computational parts by code tuning in order to reach higher FLOPS and better memory usage. This still remains an important concern, but larger scale experiments show that the imaging workflow suffers from a severe I/O bottleneck. This limitation occurs both for purely computational data and seismic time series. The latter are dealt with by the introduction of a new Adaptable Seismic Data Format (ASDF). In both cases, a parallel I/O library, ORNL’s ADIOS, is used to drastically lessen the weight of disk access. Moreover, parallel visualization tools, such as VisIt, are able to take advantage of the metadata included in our ADIOS outputs to extract features and display massive datasets. As large parts of the workflow are embarrassingly parallel, we also investigate the possibility of automating the imaging process with the integration of scientific workflow management software, such as Pegasus, Kepler, or Swift.
DeFord Lecture | Dr. Richard TaylorApril, 25 2024Time: 4:00 PM - 5:00 PMLocation: Boyd Auditorium (JGB 2.324) Adapting to the Amplification of Climate Extremes Through Freshwater Capture: Evidence from the Tropics by Dr. Richard Taylor, Department of Geography, University College London Abstract: In low-income countries of the tropics undergoing rapid growth, global warming presents challenges to the expansion and sustainability of water supplies required to advance progress toward the United Nations’ Sustainable Development Goals. Substantial uncertainty persists in projections of precipitation under climate change. A widely observed impact, pronounced in the tropics, is the intensification of precipitation comprising a transition towards fewer but heavier rainfalls. How does this transition impact terrestrial water balances? How might these changes influence freshwater demand? I will interrogate these questions and review mounting empirical evidence from the tropics of the resilience to climate change of groundwater resources, which act as a natural inter-annual store of freshwater supporting adaptation to the amplification climate extremes. Presented evidence includes case studies and local-to-regional scale analyses from tropical Africa and the Bengal Basin of South Asia. Outcomes emphasize the interconnected nature of surface water and groundwater as well as the value of groundwater as a natural, distributed store of freshwater. This insight provides a platform to explore more equitable and sustainable water development pathways resilient to climate change. |
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 |