What causes the peaks and valleys of the world’s great mountains? For continental ranges like the Appalachians or the Northwest’s Cascades, the geological picture is clearer. Continents crash or volcanoes erupt, then glaciers erode away. Yet scientists are still puzzling out what makes the highs high and the lows low for the planet’s largest mountain chain, the 55,000-mile-long Mid-Ocean Ridge.
The Polar Geophysics Group (PGG) is involved in airborne geophysical campaigns at both poles in collaboration with the National Science Foundation, NASA , the New York Air National Guard, and several international partners. Radar, lidar, gravity and magnetic data are used to explore ice sheet morphology and processes as well as the geological setting of these regions.
AGAP: Exploring the Gamburtsev Subglacial Mountains in Antarctica during the International Polar Year
Scientists from several nations are working together to launch a flagship program to explore a major mountain range buried by a large continental ice sheet and bounded by numerous subglacial lakes.
Using geophysical instruments, GAMBIT will peal back more than 600 meters of ice to explore the last hidden mountain range on Earth.
|Name||Title||Fields of interest|
|Ricardo Ramalho||Postdoctoral Research Fellow||My research interests are mostly focused on oceanic hotspot dynamics and the origins and evolution of ocean island volcanoes. I am particularly interested on long-term ocean island uplift reconstructions using relative sea-level tracers, in order to gain insight on uplift mechanisms such as dynamic topography, intrusive processes and tectonics of oceanic plates. I am also equally interested on ocean island landscape evolution and the competition between volcanic constructional processes and erosional destructive processes, particularly (but not only) along coastlines. I am also interested in the application of surface exposure dating to study uplift, flank collapses and mega-tsunamis, recent volcanism, and erosion.|
|Jonathan Gale||Graduate Student||Remote Sensing, Coastal Geomorphology, Sedimentary Geology, Delta Dynamics, GIS|
|Meredith Reitz||Postdoctoral Research Scientist||geomorphology, river deltas, river-tectonic interactions, landslides, natural hazards, sediment transport, sand dunes|
|Victoria E. Lee||Adjunct Associate Research Scientist||Isotope Geochemistry, Paleoclimate, Paleoceanography, Sedimentology, Geomorphology|
|Gordon Bromley||Postdoctoral Research Fellow||Glacial geomorphology, palaeoclimate of the tropics and Antarctica, tropical glaciers and hydrology|
|Leslie Hsu||Associate Research Scientist||geoinformatics, geomorphology, active tectonics|
|Geoffrey A. Abers||Lamont Research Professor||Earthquake seismology, imaging and tectonics of active plate boundaries|
|Colin P. Stark||Lamont Associate Research Professor||Geomorphology, tectonics, sedimentology, hydrology, tropical meteorology|
|Michael Kaplan||Lamont Associate Research Professor||Glacial geology, paleoclimatology, glacier and ice sheet dynamics, geomorphology, geochronology, limnogeology, cosmogenic surface exposure dating|
|Margaret Reitz||Graduate Research Assistant||Structural Geology, tectonic applications of Cosmogenic Radionuclides, Forearc Basins, Sedimentology|