Ondrej CADEK

Ondrej Cadek

Department of Geophysics, Faculty of Mathematics and Physics, Charles University, Prague
Mail address: KG MFF UK, V Holesovickach 2, 180 00 Praha 8, Czech Republic
Phone: (+420-2) 2191 2545
FAX: (+420-2) 2191 2555
E-mail: oc@karel.troja.mff.cuni.cz

Areas of research interests:

Mantle dynamics; inversions of the geoid for viscosity; internal dynamics and thermal convection in the Earth, planets and icy satellites; viscoelastic deformation of the Earth and planets; correlation analysis of geophysical fields, spectral methods, inverse modeling.

Born:

February 22, 1960 in Prague

Degrees:

1984: Master degree (RNDr.) in geophysics at the Faculty of Mathematics and Physics, Charles University in Prague. Master thesis: Reconstructing the records of historical earthquakes with macroseismic effects in Prague (supervisor Jiri Zahradnik).
1991: Ph.D. degree (CSc.) at the same institution. PhD thesis: Three-dimensional modelling of mantle convection (supervisor Karel Pec).
1997: Associate Professor (Doc.) at the Department of Geophysics, Faculty of Mathematics and Physics, Charles University in Prague.

Study, employment and research stays:

1979-1984: Study of geophysics at the Faculty of Mathematics and Physics, Charles University, Prague, Czechoslovakia.
1985-1990: PhD study at the Department of Geophysics, Faculty of Mathematics and Physics, Charles University.
1991-1992: Postdoctoral stay in the Geodynamical Laboratory of the Ecole Normale Superieure in Paris (12 month).
1992-1995: Research associate at the Department of Geophysics, Faculty of Mathematics and Physics, Charles University.
1995-1997: Assistent professor at the same department.
1997: Visiting researcher at the Faculty of Earth Sciences in Utrecht, The Netherlands (3 months).
1997-1999: Visiting professor at the Ecole Normale Superieure in Paris (12 months).
Since 1997: Associate professor at the Department of Geophysics, Faculty of Mathematics and Physics, Charles University.
2002: Visiting professor at the Ecole Normale Superieure in Paris (1 month).
2004: "Gauss Professor" for the year of 2004 at the University of Gottingen, Germany (3 months).
2005: Visiting professor at the University of Nantes, France (1 month).
2007: Visiting professor at the University of Nantes, France (1 month).

Present lectures at the Charles University:

PhD theses supervised:

Hana Cizkova: Modeling the dynamical processes in the Earth mantle (defended 1996).
Martin Pauer: Forward and inverse modeling of planetary topographies and gravitational fields (started 2004).
Matthieu Thomas Quinquis: Numerical models of slab dehydration (started 2007, supervised with S. Buiter, Geological Survey of Norway, Trondheim).
Alexandra Guy: Modeling suprasubduction with the aid of gravimetric and deformation data (started 2009, supervised together with K. Schulmann, EOST Strasbourg, France).

Master theses supervised:

Pavel Hrdina: Modeling of the stress field in the lithosphere (defended 1991).
Barbara Bystrzycka: Modeling the viscosity and density structure in the Venus mantle (1994).
Hana Kyvalova: Phase transitions and the dynamics of the Earth's mantle (1994).
Jan Matas: Mantle viscosity and density structure (1995).
Martin Klika: Modeling the flow in a mantle with laterally dependent rheology (1995).
Alice Slancova: Analysis of Mesozoic and Cenozoic plate motions and their relation to mantle convection (1995).
Stanislav Med: Modeling mantle convection in a mantle with impermeable interface at a depth of 660 km (1999).
David Rozek: Prediction of the geoid at intermediate wavelength (2000).
Ondrej Sramek: Dynamic geoid modeling (2001).
Martin Pauer: Dynamic analysis of gravity field and topography of Venus (2004).
Petra Maierova: Estimating the rheology parameters of icy satellites from observed surface deformations (2008).
Klara Kalousova: Internal dynamics of Mars: constraints from geoid and topography (2010).
Miroslav Kuchta: Thermal convection with evolving surface in a rotating icy satellite (started 2008).

Bachalor theses supervised:

Petra Maierova: Effects of tidal heating on processes in icy satellites (defended 2006).
Jana Lazorcakova: Sea-level changes for various scenaria of global warming (2007).
Lubica Valentova: Global rotation of the Earth's lithosphere: A myth or reality? (2007)
Klara Kalousova: Solar system bodies: internal structure analysis based on topography and gravity data (2008).
Sona Formankova: Physics of terrestrial bodies - a textbook (2008).
Miroslav Kuchta: Mantle flow modeling: application of a staggered grid method in a spherical geometry (2008).
David Eispigel: Icy satellites of giant planets (started 2009).
Vojtech Patocka: Polar wander due to thermal convection in a planetary mantle (started 2009).

Research projects:

1993-95: GACR (Grant Agency of the Czech Republic), grant No. 205/93/0450 "Investigation of structure and processes in the Earth's mantle" (588000 CZK)
1996-98: GACR No. 205/96/0212 "Modelling the dynamic processes in the Earth mantle" (698000 CZK)
1995: GAUK (Grant Agency of the Charles University), grant No. 143/1995 "A global model of the MOHO topography and its applications in determining the density structure of the Earth" (73000 CZK)
1997-1999: GAUK No. 7/1997: "Seismic anisotropy constraints on mantle convection models" (137000 CZK).
1996-1998: GAUK No. 228/1996 "Studying the relationship between geoid and mantle processes" (264000 CZK)
1999-2001: GACR No. 205/99/0256 "Global modelling and inversion in geodynamics" (659000 CZK)
1999-2001: Czech-French project "Barrande" No. 99032 "Mass exchange between upper and lower mantles: An estimate based on geoid modelling and convection simulations" (together with L. Fleitout, ENS, Paris)
2002-4: GACR No. 205/02/1306 "Forward and inverse modelling in mantle with laterally dependent viscosity"
2002-4: Czech-French project "Barrande" No. 2002-032 "Formation of planetary cores: Earth and Callisto, two different destinations" (together with Y. Ricard, ENS, Lyon)
2003-2005: EC project EVG3-CT-2002-80006 "MAGMA" (supervisor of working packages "Thermal convection" and "Viscoelastic response of the Earth")
Since 2006: GAUK No. 280/2006 "Geophysical study of the internal structure of Mars and other objects of the Solar System"
Since 2007: Participating in the EC project "c2c" ("Crust to core: The fate of subducted material", MRTN-CT-2006-035957)

Other recent activities:

Main organizer of the VIII European Workshop on Numerical Modeling of Mantle Convection and Lithospheric Dynamics, Castle of Hruba Skala, Czech Republic, September 13-18, 2003.
Member of the advisory board of SEDI (2003-2006).
Member of the Grant Agency of the Czech Republic (2002-2007).
Member of the Scientific Committee of the Geophysical Institute of the Academy of Sciences of the Czech Republic (since 2001).
Member of the Evaluation Commission of the same institute.

Selected papers:

Tosi, N., Yuen, D.A., and Cadek, O., 2010: Dynamical consequences in the lower mantle with the post-perovskite phase change and strongly depth-dependent thermodynamic and transport properties, submitted.
Behounkova, M., Tobie, G., Choblet, G., and Cadek, O., 2010: Coupling mantle convection and tidal dissipation: applications to Enceladus and Earth-like planets, J. Geophys. Res., doi:10.1029/2009JE003564, in press.
Cizkova, H., Cadek, O., Matyska, C., and Yuen, D.A., 2010: Implications of post-perovskite transport properties for core-mantle dynamics, Phys. Earth Planet. Inter., in press.
Robuchon, G., Choblet, G., Tobie, G., Cadek, O., Sotin, C. and Grasset, O., 2010: Coupling of thermal evolution and despinning of early Iapetus, Icarus, 207(2), 959-971.
van Hunen, J. and Cadek, O., 2009: Reduced oceanic seismic anisotropy by small-scale convection Earth Planet. Sci. Lett., 284, 622-629.
Tosi, N., Cadek, O. and Martinec, Z., 2009: Subducted slabs and lateral viscosity variations: effects on the long-wavelength geoid Geophys. J. Inter., 179, 813-826.
Tosi, N., Cadek, O., Martinec, Z., Yuen, D.A. and Kaufmann, G., 2009: Is the long-wavelength geoid sensitive to the presence of perovskite above the core-mantle boundary? Geophys. Res. Lett., 36, L05303, 1-5.
Tobie, G., Cadek, O., and Sotin, C., 2008: Solid tidal friction above a liquid water reservoir as the origin of the south pole hotspot on Enceladus, Icarus, 196, 642-652, doi: 10.1016/j.icarus.2008.03.008.
Yuen, D.A., Matyska, C., Cadek, O. and Kameyama, M., 2008: The dynamical influences from physical properties in the lower mantle and post-perovskite phase transition. In: Post-perovskite: the last mantle phase transition, ed. by Kei Hirose et al., Geophysical monograph 174, AGU 2008.
Choblet, G., Cadek, O., Couturier, F. and Dumoulin, C., 2007: Oedipus: a new tool to study the dynamics of planetary interiors, Geophys. J. Int., 170(1), 9-30,doi: 10.1111/j.1365-246X.2007.03419.x.
Marquart, G., Schmeling, H. and Cadek, O., 2007: Dynami models for mantle flow and seismic anisotropy in the North Atlantic region and comparison with observations, Geochemistry, Geophysics, Geosystems, 8, Q02008, doi: 10.1029/2006GC001359 (PDF 1,7 MB).
Pauer, M., Fleming, K. and Cadek, O., 2006: Modeling the dynamic component of the geoid and topogrphy of Venus, J. Geophys. Res. (planets), 111, E11012, doi: 10.1029/2005JE002511 (PDF 1,8 MB).
Cadek, O. and Fleitout, L., 2006: Effects of lateral viscosity variations in D" on predictions of the long-wavelength geoid, Stud. Geophys. Geod., 50, 217-232,(PDF 0,5 MB).
Cadek, O. and Fleitout, L., 2003: Effect of lateral viscosity variations in the top 300 km on the geoid and dynamic topography, Geophys. J. Int., 152, 566-580, (PDF 2,8 MB).
Martinec, Z., Cadek, O. and L. Fleitout, 2001: Can the 1D viscosity profiles inferred from postglacial rebound data be affected by lateral viscosity variations in the tectosphere? Geophys. Res. Lett., 28, 4403-4406.
Cadek, O. and Fleitout, L.: A global geoid model with imposed plate velocity and partial layering. J. Geophys. Res., 104 (B12), 1999, 29,055-29,075.
Cizkova, H., Cadek, O., van den Berg, A.P. and Vlaar, N.J.: Can lower mantle slab-like seismic anomalies be explained by thermal coupling between the upper and lower mantles? Geophys. Res. Lett., 26, 1999, 1501-1504.
Cadek, O. and van den Berg, A.P.: Radial profiles of temperature and viscosity in the Earth's mantle inferred from the geoid and lateral seismic structure, Earth Planet. Sci. Lett., 164, 1998, 607-615.
Cadek, O., Yuen, D.A., Cizkova, H., Kido, M., Zhou, H., Brunet, D. and Machetel, Ph.: New perspectives on mantle dynamics from high-resolution seismic tomographic model P1200, Pure Appl. Geophys., 151, 1998, 503-525.
Cizkova, H., Cadek, O. and Slancova, A.: Regional correlation analysis between seismic heterogeneity in the lower mantle and subduction in the last 180 Myr: Implications for mantle dynamics and rheology. Pure Appl. Geophys., 151, 1998, 527-537.
Cadek, O., Yuen, D.A. and Cizkova, H.: Mantle viscosity inferred from geoid and seismic tomography by genetic algorithms: Results for layered mantle flow. Phys. Chem. Earth, 23, 1998, 865-872.
Kido, M., Yuen, D.A., Cadek, O. and Nakakuki, T.: Mantle viscosity derived by genetic algorithms using oceanic geoid and seismic tomography for whole-mantle versus blocked-flow situations, Phys. Earth Planet. Inter., 107, 1998, 307-326.
Kido, M. and Cadek, O.: Inferences of viscosity from the oceanic geoid: Indication of a low viscosity zone below the 660-km discontinuity. Earth Planet. Sci. Lett., 151, 1997, 125-138.
Cizkova, H., Cadek, O. and van den Berg, A.P.: Influence of the load wavelength on the permeability of a viscosity interface in the mantle. Stud. Geophys. Geod., 41, 1997, 64-72.
Cizkova, H. and Cadek, O.: Effect of a viscosity interface at 1000 km on mantle circulation. Stud. Geophys. Geod., 41, 1997, 297-306.
Yuen, D.A., Cadek, O., van Keken, P., Reuteler, D.M., Kyvalova, H. and Schroeder, B.A.: Combined results from mineral physics, tomography and mantle convection ad their implications on global geodynamics, in: Seismic Modelling of Earth Structure, ed. E. Boschi et al., Editrice Compositori, Rome 1996.
Klika, M. and Cadek, O.: Comparison between two methods of modelling the flow in a mantle with laterally variable viscosity. Stud. Geophys. Geod., 40, 1996, 156-166.
Cadek, O., Kyvalova, H. and Yuen, D.A.: Geodynamical implications from the correlation of surface geology and seismic tomographic structure. Earth Planet. Sci. Lett., 136, 1995, 615-627.
Kyvalova, H., Cadek, O. and Yuen, D.A.: Correlation analysis between subduction in the last 180 Myr and Lateral seismic structure of the lower mantle: Geodynamical implications. Geophys Res. Lett., 22, 1995, 1281-84.
Yuen, D.A., Cadek, O., Boehler, R., Moser J. and Matyska C.: Large cold anomalies in the deep mantle and mantle instability in the Cretaceous. Terra Nova, 6, 1994, 238-245.
Cadek, O., Yuen, D.A., Steinbach, V., Chopelas, A. and Matyska, C.: Lower mantle thermal structure deduced from seismic tomography, mineral physics and numerical modelling. Earth Planet. Sci. Lett., 121, 1994, 385-402.
Martinec, Z., Matyska, C., Cadek O. and Hrdina P.: The Stokes problem with 3-D Newtonian rheology in a sphericall shell. Computer Phys. Commun., 76, 1993, 63-79.
Yuen, D.A., Cadek, O., Chopelas, A. and Matyska, C.: Geophysical inferences of thermal-chemical structures in the lower mantle. Geophys. Res. Lett., 20, 1993, 899-902.
Cadek, O., Ricard, Y., Martinec, Z. and Matyska, C: Comparison between Newtonian and non-Newtonian flow driven by internal loads. Geophys. J. Int., 102, 1993, 103-114.
Cadek, O. and Ricard, Y.: Toroidal/poloidal energy partitioning and global lithospheric rotation during Cenozoic time. Earth Planet. Sci. Lett., 109, 1992, 621-632.
Cadek, O., Martinec, Z. and Matyska, C.: Spectral variational approach to the non-Newtonian Stokes problem in a spherical shell. Computer. Phys. Commun., 71, 1992, 56-70.
Cadek, O. and Matyska, C.: Variational approach to modeling present-time mantle convection. Stud. Geophys. Geod., 36, 1992, 215-229.
Matyska, C. and Cadek, O.: Lateral variations of the mantle density and fluctuation of the core-mantle boundary -- Reply to Z.R.Ye. Phys. Earth Planet. Inter., 69, 1992, 216.
Matyska, C. and Cadek, O.: Lateral variations of the mantle density and fluctuation of the core-mantle boundary -- Comment. Phys. Earth Planet. Inter., 69, 1992, 207-213.
Cadek, O. and Martinec, C.: Spherical harmonic expansion of the Earth's crustal thickness up to degree and order 30. Stud. Geophys. Geod., 35, 1991, 151-165.
Cadek, O. and Matyska, C.: Mass heterogeneities and convection in the Earth's mantle inferred from gravity and core-mantle boundary irregularities. Pure Appl. Geophys., 135, 1991, 107-123.
Cadek, O. and Matyska, C.: Three-dimensional modelling convection in the Earth's mantle: Influence of the core-mantle boundary. Stud. Geophys. Geod., 34, 1990, 278-283.
Cadek, O.: Spherical harmonic approach to the solution of the mantle stress problem. Stud. Geophys. Geod., 33, 1989, 177-197.
Cadek, O.: Studying earthquake ground motion in Prague from Wiechert seismograph records. Gerlands Beitr. Geophysik, 96, 1987, 438-447 (PDF 0,5 MB).

Invited lectures, teaching at summer schools, etc.:

Mantle rheology, viscosity and mineralogical constraints. Invited lecture at the EURESCO Conference "The Deep Earth", Aquafreda di Maratea, Italy, September 11-16, 1999.
Constraints on mantle flow models from geophzsical data. Invited lecture at the IX International Workshop on Numerical Modeling of Mantle Convection and Lithospheric Dynamics, Erice, Italy, September 8-13, 2005.
Lectures on geodynamical modeling (14 hours) in the graduate short course organized by Bayerisches Geoinstitut, University of Bayreuth, Germany, June 4-15, 2007.

Last update: May 13, 2010