Events

JSG Happenings

Events

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UTIG Seminar Series: Stephen Phillips, UTIG

August, 31 2018

Time: 10:30 AM - 11:30 AM
Location: PRC ROC Room 1.603

Speaker bio.

Host: Peter Flemings
Title:
Characterization of a methane hydrate reservoir in the northern Gulf of Mexico by pressure core analysis

Abstract:
Methane hydrates are ice-like solids stable in continental margin sediments that potentially represent a large energy resource. However, our understanding of hydrate formation processes and in situ properties in these systems is limited. We recovered the first pressurized cores from a coarse-grained hydrate reservoir in the Gulf of Mexico (410 to 447 m below seafloor; 2032 m water depth in the Green Canyon area). Quantitative depressurization of these cores demonstrates a high methane hydrate saturation up to 93% of the pore space. There is a strong lithologic control of hydrate saturation at this site with interbedded high and low hydrate saturation lithofacies. Sandy silt beds at this site are characterized by consistently high hydrate saturation (79 to 93%). Sections with lower bulk hydrate saturation (2 to 30%) are composed of thin, high-saturation beds diluted by clay-rich intervals containing little to no disseminated hydrate, as shown by high-resolution X-ray computed tomography and P-wave velocity scans. Gas recovered during these experiments is composed almost pure methane, with < 100 ppm ethane, and only detectable propane, butane, and pentane quantities, indicating that the gas is from either a microbial source or a heavily-altered thermogenic source. Our thermodynamic equilibrium calculations at the point of initial pressure rebound from hydrate dissociation during degassing indicate that the salinity within these samples is near average seawater concentration.

UTIG Seminar Series: Liming Li, University of Houston

September, 07 2018

Time: 10:30 AM - 11:30 AM
Location: PRC ROC Room 1.603

Speaker bio.

Host: Krista Soderlund
Title: Energies of Planetary Atmospheres

Abstract: I will discuss some important energy processes in planetary atmospheres, which include the radiant energy budget and energy conversion. For terrestrial bodies, the radiant energy budget can help us understand global climate changes (e.g., Earth), polar ice caps (e.g., Mars), and the heat flow driving jet plumes (e.g., Enceladus). For the giant planets, the radiant energy budget is a critical way to evaluate the intrinsic heat flux, which is related to planetary formation and evolution. The energy budget at the top of planetary atmospheres also sets a boundary condition to calculate the radiative transfer and the related heating/cooling rates. The heating/cooling rates modify the thermal structures of planetary atmospheres to generate temperature gradient, which further produces potential energy. Some of the potential energy can be converted into kinetic energy to drive the atmospheric circulation (i.e., Lorenz energy cycle). Based on the above energy perspective, I will present some recent progresses in exploring planetary atmospheres (e.g., Jupiter, Saturn, Earth, Mars, Titan, and Enceladus) and preparing a possible future mission.

UTIG Seminar Series: Amanda Thomas, University of Oregon

September, 14 2018

Time: 10:30 AM - 11:30 AM
Location: PRC ROC Room 1.603

Speaker bio.

Host: Thorsten Becker

Save the Date - Annual Tailgate Party - Time TBD

September, 15 2018

Time: 12:00 PM - 12:00 PM
Location: Holland Family Student Center, Jackson Geological Sciences Building

Texas Geosciences Career Fair 2018

September, 18 2018

Time: 10:00 AM - 3:00 PM
Location: San Jacinto Multipurpose Room

Join us for the annual fall career fair where employers will be speaking to students about opportunities within their companies. The career fair will begin at 10 am and go through 3 pm in the San Jacinto Multipurpose Room. Open to all Jackson School students.