Researcher
Contact
- 303-735-2509
- Alternate email:
- Office: SPSC-N213
Education
University of Göttingen — Göttingen, Germany
PhD in Astrophysics
Kharkiv National University — Kharkiv, Ukraine
M.S. Physics and Astronomy
Employment history
University of Bern, Switzerland — Postdoctoral Researcher
2008-20012
Max Planck Institute for Solar System Research — Spacecraft Operations
2005-2007
Specialties
My main area of interest is ices in the solar system.
This spans from atmosphere-surface interactions on Mars to plumes and surfaces of icy satellites of giant planets and comets.
Projects/research
- Laboratory investigations of planetary icy analogs and surface-atmosphere interactions on Mars;
- Understand the physics behind the plumes and jets in ocean worlds;
- Monitoring seasonally active areas on Mars and modelling of relevant processes;
- Citizen science project Planet Four.
Publications
Total 33 peer-reviewed publications, out of them 10 as a first author.
Google scholar statistics (as of September 27, 2017):
Citations – 799 ; h-index – 14; i10-index – 17.
Publications during the last 5 years:
Portyankina, G., Merrison, J., Iversen, J.J., Yoldi, Z., Hansen, C. J., Aye, K.-M., Pommerol, A., Thomas, N., 2017, Laboratory investigations of the physical state of CO2 ice in a simulated martian environment.
Icarus, under review.
Hedman, M. , Dhingra, D., Nicholson, P., Hansen, C., Portyankina, G. , Ye, S. , Dong, Y, 2017, Spatial Variations in the Dust-to-Gas Ratio of Enceladus' Plume. Icarus, under revision.
Smith, I., Diniega, S., Beaty, D.W., Thorsteinsson, T., Becerra, P., Bramson, A.M., Clifford, S.M., Hvidberg, C. S., Portyankina, G., Piqueux, S., Spiga, A., Titus, T. N., 2017, 6th International Conference on Mars Polar Science and Exploration: Conference Summary and Five Top Questions, Icarus, in press.
Schwamb, M. E., Aye, K.-M., Portyankina, [...] G., Hansen, C. J., Allene, C., Calef III, F. J., Ducae, C., McMastere, A., Mille, G. R. M., 2017, Planet Four: Terrains - Discovery of Araneiforms Off of the South Polar Layered Deposits, Icarus, in press.
Hansen, C. J., Esposito, L.W., Aye, K.-M., Colwell, J. E., Hendrix, A. R., Portyankina, G. , and Shemansky, D., 2017, Investigation of diurnal variability of water vapor in Enceladus' plume by the Cassini ultraviolet imaging spectrograph. Geophys. Res. Lett. 44.
Portyankina, G., Hansen, C.J., Aye, K.-M., 2017, Present-day erosion of Martian polar terrain by the seasonal CO2 jets. Icarus Volume 282, pp. 93–103.
Hansen, C.J., Diniega, S., Bridges, N., Byrne, S., Dundas, C., Mcewen, A., Portyankina, G.,
2014, Agents of change on Mars' northern dunes: cotwo{} ice and wind. Icarus 251, pp. 264-274.
Portyankina, G., Pommerol, A., Aye, K.-M., Hansen, C. J., Thomas, N., 2013, Observations of the northern seasonal polar cap on Mars II: HiRISE photometric analysis of evolution of northern polar dunes in spring, Icarus, Volume 225, Issue 2, pp. 898-910, ISSN 0019-1035.
C. Holstein-Rathlou, J. Merrison, J. J. Iversen, A. B. Jakobsen, R. Nicolajsen, P. Nørnberg, K. Rasmussen, A. Merlone, G. Lopardo, T. Hudson, D. Banfield, G. Portyankina, 2013, An Environmental Wind Tunnel facility for testing meteorological sensor systems, 2014, Journal of Atmospheric and Oceanic Technology, Volume 31, Issue 2.
Pommerol, A., Appere, T., Portyankina, G., Aye, K. –M., Thomas, N. and Hansen, C. J., 2013, Observations of the Northern Seasonal Polar Cap on Mars III: Spring sublimation of Mars Northern seasonal cap observed by CRISM and HiRISE, Icarus, Volume 225, Issue 2.
Thomas, N., Hansen, C.J., Pommerol, A., Portyankina, G., Aye, K.-M., and Russell, P.S., 2013, Observations of the surface effects of the CO2 and H2O cycles on Mars, Highlights of Spanish Astrophysics VII, Proceedings of the X Scientific Meeting of the Spanish Astronomical Society.
Portyankina G., Pommerol, A., Aye, K.-M., Hansen, C. J., Thomas, N., 2012, Cracks in seasonal CO2 ice layer, J. Geophys. Res., Vol. 117, E2, # E02006.
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