Frederique Rolandone

UC Berkeley Seismo Lab
215 McCone Hall,
Berkeley CA 94720-4760
Tel: (510) 642-8374.

E-mail: frede@seismo.berkeley.edu

Postdoctoral researcher at the Berkeley Seismological Laboratory (Department of Earth and Planetary Science)
at the University of California, Berkeley.

NOW Assistant Professor at

Laboratoire de Tectonique UMR 7072

Université Pierre et Marie Curie - Paris VI
Laboratoire de Tectonique - CNRS UMR 7072
Barre 46-45 Niveau 2 - Case 129
4, Place Jussieu F-75252 Paris Cedex 05 France
Tel : +33 (0)1 44 27 23 08
Fax : +33 (0)1 44 27 50 85

Email : frederique.rolandone@lgs.jussieu.fr
Web: http://www.lgs.jussieu.fr/rolandone.html

Research Interests

Fault mechanics

Models of crustal deformation

Rheology and thermal structure of continents

Paleoclimate

My primary scientific interest focuses on the mechanics of faulting throughout the earthquake cycle. I am interested in providing insights into the earthquake cycle from both data-oriented and model-oriented perspectives. I utilize seismic and geodetic data sets in my work. I use several data processing techniques including high-resolution earthquake relocation techniques (hypoDD), GPS data processing with GAMIT/GLOBK and InSAR processing with ROI_PAC. I numerically simulate time-dependent tectonic processes using 2-D and 3-D finite element models to quantify the partitioning of deformation between seismic and aseismic processes and to explore the rheology of the crust and mantle.

Research Projects

The Evolution of the Seismic-Aseismic Transition during the Earthquake Cycle:
Constraints from the Time-Dependent Depth Distribution of Aftershocks,
Implications for fault mechanics and crustal rheology

Active Tectonics Research Group at UC Berkeley)

The objectives of this project are to resolve the time-dependent depth distribution of aftershocks to constrain models of the brittle-ductile transition and the rheology near the base of seismogenic faults. Recently developed relative relocation techniques improve relative hypocenter locations (Waldhauser and Ellsworth, 2000) and reveal greater details of the patterns of deformation during an earthquake cycle. Our first objective is to apply high-resolution relocations techniques to resolve the time-dependent depth distribution of aftershocks on different fault segments, following main events of a wide range of magnitude. Our second objective is to relate the depth distribution of hypocenters during an earthquake cycle to the evolution of the brittle-ductile transition to place constraints on strain rate at depth and on the partitioning of deformation between brittle faulting and distributed deformation and to probe the rheology below the seismogenic zone.

Kinematics and dynamics of time-dependent slip along the central creeping segment of the San Andreas fault (using GPS and InSAR measurements, and microseismicity)

The central, aseismically-slipping segment of the San Andreas fault (CSAF) represents a unique natural laboratory allowing detailed investigations of the kinematics and dynamics of aseismic fault slip. Geodetic and seismic data suggest that the CSAF behaves in a strongly time-dependent fashion including the occurrence of slow earthquakes, variations of slip rates over several years, and a complex response to regional stress changes. Our goals are (1) to characterize the patterns of aseismic fault slip in space and time to better understand the physics of the underlying fault zone processes, (2) to utilize the sensitivity of slip variations to subtle changes in the regional stress field to better constrain the fault's constitutive properties, and (3) to benefit from the sensitivity of aseismic fault slip to the nature of deformation in the lower crust to improve our understanding of the rheology there.

The December 22 2003, M 6.5, San Simeon earthquake presents an exciting opportunity. What will be the response of the SAF?
Following the December 22 M 6.5 San Simeon earthquake, we have resurveyed 6 GPS stations along the creeping segment of the San Andreas fault, north-east of the mainshock. We are working on combining our GPS measurements with InSAR data to constrain models of the coseismic rupture of the San Simeon earthquake and to reveal the kinematics of slip transients on the creeping San Andreas fault.

Shear Zone and Seismic Anisotropy: a multidisciplinary study of the Ailao Shan-Red River Shear zone

(with Edouard Kaminski, Sebastien Chevrot, Herve Leloup, Paul Tapponnier, Robin Lacassin, Cecile Lasserre, Steve Tait)

One of the fundamental, unresolved issues of plate tectonics is the degree of coupling between the plates on the surface and the convective mantle below. Is the mantle lithosphere cut by faults or narrow shear zones that separate rigid bodies, or does it behave as a continuous medium and deform continuously? One distinct feature for differentiating between these models is the measure of mantle deformation via the measure of seismic anisotropy. Seismic anisotropy occurs when elastic waves travel faster in one direction than another resulting in shear wave splitting. In the mantle, anisotropy results from preferred orientation of mantle minerals (mainly olivine) in the deformation field. Thus, shear wave splitting measurements can characterize the geometry and depth extents of strain fields in the mantle. To use anisotropy as a measure of mantle deformation, we must know its relationship to the properties of crystalline aggregates, to the style of tectonic deformation, and its various seismological manifestations.

Heat Flow in the Western Superior Province of the Canadian Shield

(with Claude Jaupart, Jean-Claude Mareschal and Gerard Bienfait)

New heat flow and heat generation measurements have been made in deep boreholes (>500m) at several sites in Ontario, northwest of Lake Superior. The new measurements and reevaluation of older data from the International Heat Flow Commission compilation have drastically altered the heat flow map in the Western Superior Province of the Canadian Shield which no longer appears as anomalous on the heat flow map of the Canadian Shield.

Lateral changes in temperature at the base of the Laurentide ice sheet inferred from borehole temperature data

(with Claude Jaupart, Jean-Claude Mareschal and Gerard Bienfait)

Three temperature depth profiles from very deep (1720-2800m) boreholes in Canada are inverted to determine temporal changes in ground surface temperature. The objectives are to constrain the horizontal variations of temperature at the base of the Laurentide ice sheet and to explain how the temperature at the base of a large glacier is affected by the geometry and the flow of the ice sheet.

Academic Background

Ph.D., Geophysics, 2000, University Paris 7,
Institut de Physique du Globe de Paris
Thesis title: Thermal structure of the continental lithosphere and shear zone mechanics

M.S., Geophysics, 1996, University Paris 7,
Institut de Physique du Globe de Paris, Highest honors

B.S., Physics, 1995, University Paris 6

B.S., Physics and Electronics, 1994, King's College, London

Engineering Degree, 1994, Ecole FRancaise d'Electronique et d'Informatique, Paris

Professional Experience

Postdoctoral Researcher, UC Berkeley Seismological Laboratory, (Scholarship Lavoisier, Grants IGPP-LLNL, SCEC), 2001-2004
Postdoctoral Researcher, IPGP, France and GEOTOP, Canada, (Scholarship Academie des Sciences), Jan.-Sept. 2001

Teaching assistant, Geological Fluid Dynamics, University Paris 6, 1999-2000

Teaching assistant, Continuum Mechanics, University Paris 7, 1998-2000

Graduate Research Assistant, GEOTOP, Montreal, Canada, (Scholarship CCIFQ), Sept.-Nov. 1998

Graduate Research Assistant, IPGP, University Paris 7, 1996-2000

Field Survey

Heat Flow (HF) Campaigns with the Institut de Physique du Globe de Paris and the GEOTOP:

Since 1998, I have taken part in seven field surveys in Canada, during which we have acquired new heat flow and heat production data. (pictures)

HF survey in the Trans-Hudson Orogen (1998 and 1999)
HF survey in the Superior Province (2000, 2001, 2002 and 2003)

Global Positioning System (GPS) Campaigns with the Active Tectonics Research Group at UC Berkeley :

GPS field survey in Central California, Ingrid Johanson's campaign (Aug. 2002)
GPS field survey in Alaska (Nov. 2002) following the Mw 7.9 2002 Denali Earthquake (story and pictures)
GPS field survey along the creeping segment of the San Andreas fault, my campaign (Jan. 2003)
GPS field survey along the Hayward Fault, Matt d'Alessio's campaign (May 2003)
Geodetic reponse to the Decembre 22, M 6.5, San Simeon earthquake (Dec 2003)
GPS field survey along the creeping segment of the San Andreas fault (July 2004)
GPS field survey: the San Benito Network, a helicopter survey (July 2004)
GPS field survey along the creeping segment of the San Andreas fault (July 2005)

Publications and Presentations

Papers:

Rolandone, F., R. Bürgmann, and R.M. Nadeau, Time varying depth of the seismic-aseismic transition following M>6 earthquakes in California (1984-2001), In Prep.

Mareschal J.C., C. Jaupart, F. Rolandone, C. Gariepy, C.M.R. Fowler, G. Bienfait, C. Carbonne, and R. Lapointe, Heat flow, thermal regime, and elastic thickness of the lithosphere in the Trans-Hudson Orogen, Canadian Journal of Earth Sciences, 42 (4): 517-532, 2005.

Perry, C., C. Jaupart, J.-C. Mareschal, F Rolandone and G. Bienfait, Heat Flow in the Nipigon arm of the Keweenawan Rift, northwestern Ontario, Geophys. Res. Lett., 31, L15607, doi:10.1029/2004GL020159, 2004. (PDF format)

Rolandone, F., R. Bürgmann, and R.M. Nadeau, The evolution of the seismic-aseismic transition during the earthquake cycle: Constraints from the time-dependent depth distributions of aftershocks, Geophys. Res. Lett., 31, L23610, doi:10.1029/2004GL021379, 2004. (PDF format)

Rolandone, F., J-C. Mareschal and C. Jaupart, Temperatures at the base of the Laurentide Ice Sheet inferred from borehole temperature data, Geophys. Res. Lett., 30(18), 1944, doi:10.1029/2003GL018046, 2003. (PDF format)

Rolandone, F., J-C. Mareschal, C. Jaupart, C. Gosselin, G. Bienfait, and R. Lapointe, Heat Flow in the Western Superior Province of the Canadian Shield, Geophys. Res. Lett., 30(12), 1637, doi: 10.1029/2003GL017386, 2003. (PDF format)

Rolandone, F. and C. Jaupart, The distribution of slip rate and ductile deformation in a strike-slip shear zone, Geophys. J. Int., 148, 179-192, 2002. (PDF format)

Rolandone, F., C. Jaupart, J-C. Mareschal, C. Gariepy, G. Bienfait, C. Carbonne, and R. Lapointe, Surface heat flow, crustal temperatures and mantle heat flow in the Proterozoic Trans Hudson Orogen, Canadien Shield, J. Geophys. Res., 107(B12), 2342, doi:10.1029/2001JB001195, 2002. (PDF format)

Cheng, L. Z. , J. C. Mareschal, C. Jaupart, F. Rolandone, C. Gariépy and M. Radigon, Simultaneous inversion of gravity and heat flow data: constraints on thermal regime, rheology and evolution of the Canadian Shield crust, Journal of Geodynamics, 34, 11-30, 2002. (PDF format)

Mareschal, J-C., A. Poirier, F. Rolandone, G. Bienfait, C. Gariepy, R. Lapointe, and C. Jaupart, Low mantle heat flow at the edge of the North American continent, Voisey Bay, Labrador, Geophys. Res. Lett., 27, 823-826, 2000. (PDF format)

Mareschal, J-C., C. Jaupart, L.-Z. Cheng, F. Rolandone, C. Gariepy, G. Bienfait, L. Guillou-Frottier and R. Lapointe, Heat flow in the Trans Hudson Orogen of the Canadian Shield : implications for Proterozoic continental growth, J. Geophys. Res., 104, 29,007-29,024, 1999. (PDF format)

Mareschal, J-C., F. Rolandone, and G. Bienfait, Heat flow variations in a deep borehole near Sept-Iles, Quebec, Canada : Paleoclimatic interpretation and implications for regional heat flow estimates, Geophys. Res. Lett., 26, 2049-2052, 1999. (PDF format)

Abstracts:

Rolandone, F., I. Johanson, R. Bürgmann, and D. Agnew, Variation in aseismic slip and fault normal strain along the creeping segment of the San Andreas fault from GPS, InSAR and trilateration data , Eos. Trans. AGU, 85(47), Fall Meet. Suppl., Abstract G32A-05, 2004 (oral presentation). (Abstract)

Johanson, I., F. Rolandone, and R. Bürgmann, Geodetic observations of the 2004 Parkfield earthquake and associated slip on the creeping section of the San Andreas fault from GPS and InSAR, Eos. Trans. AGU, 85(47), Fall Meet. Suppl., Abstract S51C-0170G, 2004. (Abstract)

Rolandone, F., I. Johanson, and R. Bürgmann, Geodetic observations of the M6.5 San Simeon earthquake with focus on the response of the creeping segment of the San Andreas fault, Seism. Res. Lett., 75, 293, 2004. (Abstract)

Murray, M.H., D.C. Agnew, R. Bürgmann, K. Hurst, R.W. King, F. Rolandone, J. Svarc, GPS Deformation measurements of the 2003 San Simeon earthquake, Seism. Res. Lett., 75, 295, 2004. (Abstract)

Rolandone, F., and R. Bürgmann, GPS measurements following the December 22 2003, M 6.5, San Simeon Earthquake along the creeping segment of the San Andreas fault, 2004 UNAVCO Annual Meeting, 2004.

Rolandone, F., R. Bürgmann, R. M. Nadeau, A. M. Freed, The Evolution of the Seismic-Aseismic Transition during the Earthquake Cycle: Constraints from the Time-Dependent Distribution of Aftershocks, Eos. Trans. AGU, 84(46), Fall Meet. Suppl., Abstract G22D-08, 2003 (oral presentation). (Abstract)

Rolandone, F. and R. Bürgmann, The temporal evolution of the depth of the seismic-aseismic transition during the earthquake cycle, Joint Workshop UNAVCO/IRIS, 2003.

Rolandone, F., R M Nadeau, A M Freed, R Bürgmann, Temporal Variations in Depth of Seismicity During the Earthquake Cycle and Changes of the Brittle-Ductile Transition, Eos. Trans. AGU, 83(47), Fall Meet. Suppl., Abstract T71C-1189, 2002.

Freymueller, R Burgmann, E Calais, A Freed, E Price, Denali Fault GPS Field Crew (H Fletcher, J Greenberg, L Hennig, S Hreinsdöttir, B Johns, J Kalbas, C Larsen, K Ridgway, F Rolandone, N Rozell, J Sklar, D Templeton), An Unparalleled Opportunity to Study Postseismic Processes, Eos. Trans. AGU, 83(47), Fall Meet. Suppl., Abstract S72F-1365, 2002.

Gosselin, C., J Mareschal, C Jaupart, F Rolandone, 500 Years Ground Surface Temperature History in Northwestern Ontario From Borehole Temperature Profiles, Eos. Trans. AGU, 83(47), Fall Meet. Suppl., Abstract GC21B-0156, 2002.

Rolandone F., R. Bürgmann and R.M. Nadeau, Time-dependent depth distribution of aftershocks: implications for fault mechanics and crustal rheology, Seism. Res. Lett., 73, 229, 2002.

Rolandone F. and R. Bürgmann, Depth variation of slip and distributed ductile deformation along a strike-slip fault, abstract for the 2002 UNAVCO Annual Meeting, 2002.

Rolandone F. and C. Jaupart, The Distributions of Slip Rate and Ductile Deformation in a Strike-Slip Shear Zone, Eos. Trans. AGU, 82(47), Fall Meet. Suppl., 935, 2001.

Mareschal, J-C., F. Rolandone, and C. Jaupart, Lateral changes in temperature at the base of the Laurentide ice sheet inferred from borehole temperature data, Eos. Trans. AGU, 82(47), Fall Meet. Suppl., 523, 2001.

Jaupart, C., J-C., Mareschal, F. Rolandone, and C. Gosselin, Heat Flow in the Western Superior Province of the Canadian Shield, Eos. Trans. AGU, 82(47), Fall Meet. Suppl., 1179, 2001.

Rolandone F., R. Bürgmann, and C. Jaupart, Heat flow paradox and thermo-mechanics of faulting and ductile deformation
in a strike-slip shear zone, abstract for the EarthScope Workshop, 388-390, 2001.

Rolandone, F., C. Jaupart, J-C. Mareschal, and C. Gariepy, The scales of heat flow variations on continents, Eos. Trans. AGU, 81(48), Fall Meet. Suppl., 1192, 2000 (oral presentation).

Gosselin, C., J-C. Mareschal, F. Rolandone, and C. Jaupart, Ground surface temperature variations near Thompson, Manitoba: Environment and climate changes, Eos. Trans. AGU, 81(48), Fall Meet. Suppl., 30, 2000.

Mareschal, J-C., F. Rolandone, L. Guillou-Frottier, and C. Jaupart, Implications of borehole temperature data for climate studies in Canada, Geothermics at the turn of the century, Evora, Portugal, 2000.

Cheng, L.-Z., F. Rolandone, C. Jaupart, J-C. Mareschal, and C. Gariepy, Heat flow in the Trans Hudson Orogen: Constraints on Proterozoic crustal growth, Eos. Trans. AGU, 80(46), Fall Meet. Suppl., 988, 1999.

Rolandone, F., J-C. Mareschal, C. Jaupart, L.-Z. Cheng, C. Gariepy, G. Bienfait, L. Guillou-Frottier and R. Lapointe, Heat flow, crustal heat production and crustal structure in the Canadian Shield : 3 Ga of continental growth, European Union of Geosciences, J. Conf. Abs., 4, p 438, 1999 (oral presentation).

Rolandone, F. and C. Jaupart, Stress, slip, deformation and thermal structure of a shear zone, Eos. Trans. AGU, 79(45), Fall Meet. Suppl., 607, 1998.

Mareschal, J-C., F. Rolandone and C. Jaupart, Postglacial warming recorded in a temperature profile near Sept-Iles, Quebec, Canada, Eos. Trans. AGU, 79(45), Fall Meet. Suppl., 844, 1998.

Invited Seminars:

Rolandone F., The evolution of the seismic-aseismic transition during the earthquake cycle: Constraints from the time-dependent depth distributions of afterschocks, Solid Earth Physics Seminar, Harvard University, October 21, 2003.

Rolandone F., Time-dependent depth distribution of aftershocks: implications for fault mechanics and crustal rheology, Structural Geology and Geomechanics Seminar, Stanford University, April 23, 2003.

Rolandone F., Depth variation of slip rate and distributed ductile deformation along a strike-slip shear zone, Crustal Deformation and Fault Mechanics Seminar, Stanford University, April 26, 2002.

Dissertation:

Rolandone F., Thermal structure of the continental lithosphere and shear zone mechanics, Ph.D. dissertation, Institut de Physique du Globe de Paris, pp. 183, 2000.