EPSS Colloquium - winter-2021


What Happens When You Inject Water into a Glacier Shear Margin? Understanding Greenland’s Shear Margins in Warming Climate

Jan. 5, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Derrick Lampkin - University of Maryland-College Park

TBD


Ending Lead Poisoning and Environmental Racism: Providing Agency through Community-Engaged Research

Jan. 12, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Gabriel Filippelli - Indiana University-Purdue University Indianapolis

Seminar Description coming soon.

In and out of the last ice age: Insights from sea-level change and river evolution in North America

Jan. 19, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Tamara Pico - California Institute of Technology

Ice ages cycles are often described as comprising a slow glacial build-up phase followed by a rapid deglaciation. However, during much of the last ice age, global ice volumes are largely uncertain due to a sparsity of sea-level records. Furthermore, it is challenging to reconstruct individual ice sheet geometries because advancing ice sheets raze evidence of previous ice margins. I revisit two topics of considerable debate within these broader questions. The first is the timing of both the expansion of the ice-free corridor between the Cordilleran and Laurentide Ice Sheet and the flooding of the Bering Strait. In this case, I use observations of the Bering Strait flooding as sea-level indicators to fingerprint the timing and location of North American saddle deglaciation. The second is the geometry of the Laurentide Ice Sheet in the build-up toward Last Glacial Maximum. To investigate this issue, I use sea-level records from the U.S. east coast and glacial isostatic adjustment modeling to infer the large-scale growth history of North American ice sheets. I also demonstrate that ancient landscapes provide additional insight into ice loading histories, as rivers can faithfully record surface deformation, and I use geologic records of U.S. east coast rivers as a novel data set for inferring the history of glaciation.


Variations in Radar Emissivity on Venus Highlands

Jan. 26, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Martha Gilmore - Wesleyan College

Seminar Description coming soon.

Molecular Memories of Earth's Antiquity

Feb. 2, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Jennifer Glass - Georgia Institute of Technology

Seminar Description coming soon.

Improving the veracity of paleoclimate records by in situ analysis of foraminifera shells at the micron-scale

Feb. 9, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Reinhard Kozdon - Lamont-Doherty Earth Observatory of Columbia University

Seminar Description coming soon.

Near trench evidence for fluids from 3D seismic attenuation, Northern Hikurangi subduction margin, New Zealand

Feb. 16, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Jenny Nakai - University of New Mexico, Albuquerque

Seminar Description coming soon.

An Attempt to Unravel the Origins of Enantiomer Excesses in Early Solar System (Meteoritic) Organic Compounds

Feb. 23, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. George Cooper - NASA

Seminar Description coming soon.

How Did Mars's Surface Become Uninhabitable

March 2, 2021
3:30 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Edwin Kite - University of Chicago

Seminar Description coming soon.

Complexities of Olivine Crystallographic Preferred Orientation and Implications for Mantle Seismic Anisotropy

March 9, 2021
5 p.m. - 5 p.m.
zoom

Presented By:

  • Dr. Rachel Bernard - University of Massachusetts, Amherst

Seminar Description coming soon.