Planetary Science Seminar - spring-2012
A Heterogeneous Solar Nebula as Sampled by CM Hibonite
April 5, 2012
noon - 1 p.m.
Slichter 3853
Presented By:
- Ming-Chang Liu - Institute of Astronomy & Astrophysics, Academia Sinica, Taipei
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Seminar Description coming soon.
Vesta and extensively melted asteroids: why HED meteorites are probably not from Vesta
April 12, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- John Wasson - UCLA
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Seminar Description coming soon.
Close Asteroid-Earth encounters: The cases of 2006 YU5 and 1950 DA
April 19, 2012
noon - 1 p.m.
Geology 4677
Presented By:
- Michael Busch - UCLA
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Seminar Description coming soon.
Laboratory and Diviner Bidirectional Reflectance/ Interpreting LRO Diviner
April 26, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- Emily Foote - UCLA
- Jean-Pierre Williams - UCLA
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Full title: Laboratory and Diviner Bidirectional Reflectance Measurements of Apollo Soils / Interpreting LRO Diviner observations of fine-scale lunar surface thermal variability
Small Asteroid Evolution
May 3, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- Seth Jacobson - UC Boulder
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Small asteroids (< 10 km) can evolve into all classes of observed near-Earth asteroid (NEA) binaries as well as observed, non-collisional families of asteroids. Solar radiation is the primary driver of this evolution. The YORP effect, an effective torque driven by solar and thermal radiation, can rotationally accelerate asteroids towards the a rotational disruption speed limit, where the gravitational accelerations holding the body together are overcome by the centrifugal accelerations pulling the body apart. There is a specific speed at which two coherent sections of the steroid may go into orbit about each other. From this rotational fission event, a chaotic binary system is created and will evolve according to spin-orbit interactions, solar gravitational tides, the YORP effect, mutual body tides, and once a member of the binary is tidally locked,the binary YORP effect. Which of these forces is dominant will determine the evolutionary path of the asteroid system and what observable, long term state it will occupy, including the doubly synchronous binaries, singly synchronous binaries, asynchronous binaries, contact binaries, asteroid pairs or more exotic classes.
The geology of Vesta: much more than crater counting/Searching for volatiles on Vesta with radar
May 10, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- Liz Palmer - UCLA
- Jennifer Scully - UCLA
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Seminar Description coming soon.
Spatial and Temporal Relationships of Landslides i Valles Marineris/Heat flow in the Earth
May 17, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- Jessica Watkins - UCLA
- Emma Rainey - UCLA
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Full title: Spatial and Temporal Relationships of Landslides in Valles Marineris, Mars: Constraints on their Triggering Mechanisms". / heat flow in the Earth and the thermal conductivity of the mantle.
Rosetta at comet 67 P/Churyumov-Gerasimenko: a journey to the dawn of the solar system
May 24, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- Claudia Alexander - JPL
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Seminar Description coming soon.
Yarkovsky drift and near-Earth asteroid/Are Jovian Trojans salty?s
May 31, 2012
noon - 1 p.m.
4677 Geology
Presented By:
- Bin Yang - University of Hawai'i
- Sebastiano Padovan - UCLA
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Seminar Description coming soon.
Ice on Europa/Librations in a Spheroid
June 7, 2012
noon - 1 p.m.
Geology 4677
Presented By:
- Matt Walker - UCLA
- Alex Grannan - UCLA
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