Triton's subsurface ocean
Here's another article in astrobilogy magazine
discussing the implications of Jodi Gaeman's research on a possible subsurface ocean in Triton on extraterrestrial life.
The outermost ocean in our solar system
A recent article
in Icarus, led by former graduate student Jodi Gaeman suggests the presence of an ocean under the icy shell of Neptune's moon, Triton. If present, this ocean will be the outermost known ocean in our solar system. At an average temperature of -97° C, this ammonia-rich ocean was sustained over 4.5 billion years by tidal blanketing and readiogenic heating.
Read more about this research in this New Scientist article
Undergraduate research opportunity
Two undergraduate research assistantships are available in computational geophysics.
The University of Maryland has launched a new Blended Learning initiative
to develop innovative learning opportunities for students. I am teaching one of the first ten Blended Learning courses in Spring 2012. Download or stream the online lecture contents here
Jodi Gaeman and Jesse wimert defended their Master's theses. Jodi's
thesis demonstrates that an ocean might exist beneath the icy shell of
Neptune's moon Triton. Jesse's new model of melt microstructure show
that the UltraLow Velocity Zones in the Earth's core-mantle boundary
likely consists of a modest amount of melting.
The August 23 Earthquake
On August 23, an M5.9 earthquake rocked the greater Washington DC
metropolitan area. This earthquake was caused by thrusting motion on a
nearly N-S trending fault in the Central Virgina Seismic Zone. Check
out the USGS website
for more information on this
earthquake. Also you can download some geological information on this
International Geodynamics Workshop
The 12th International Workshop on Modeling of Mantle Convection and
Lithospheric Dynamics will be held at Groß DÖlln
, ( english translation by google
) Germany. Visit the
for preregistration and
Undergraduate Matt Abbott, graduates students Jesse Wimert and Jodi
Gaeman (presenting a collaborative work with Justin Desha-Overcash),
and Sash will present their results at this year's fall AGU. Stay tuned
for our posters.
Two recent articles, one by our group
and another by Allen Mcnamara
and coauthors, demonstrate that the topography and structure of the
seismic low velocity zones at the core-mantle boundary are linked with
mantle convection. Read more.
Water cyclists reunite
A research group studying the relationship between plate tectonics and
the Earth's water cycle is gathering at UMD. This project is a
continuation of the 2010 CIDER summer program.
student Matt Abbott's research shows wetting angle of partial melts
significantly alter seismic velocities of partially molten rocks. Read more.
We held a workshop on scientific visualization for local high school science teachers in May, 2010. Read more.
student Xiaoming Liu's work combining geochemical analysis and
geophysical modeling reveals complex isotopic signature resulting from
ancient porous flow. Read more.