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Benoit Langlais
Geodynamics Branch
code 921
Goddard Space Flight Center / NASA
Greenbelt, MD 20771, USA
Email : langlais@ltpmail.gsfc.nasa.gov
Phone : (+1) 301 614 6455
Born on 08/04/75, married, French

Education

1998-2001 PhD, Internal Geophysics, "Earth's and Mars' magnetic fields, results from Ĝrsted and Mars Global Surveyor spacecrafts", Institut de Physique du Globe, Paris, France.
1997-1998 Diplôme d'Études Approfondies (Post-graduate qualification), Internal Geophysics: "Use of satellite and ground magnetic measurements to model the Earth's magnetic field", Institut de Physique du Globe, Paris, France.
1996-1997 Masters degree of Geophysics, University of Rennes 1, Rennes, France.
1995-1996 Bachelors degree of Earth Sciences, University of Rennes 1, Rennes, France.

Related Activities

2000-2001 Elected student member of the `Scientific Commitee', Institut de Physique du Globe, Paris, France.
2000-2001 Elected student member of the `Earth Sciences Doctoral School Commitee', Institut de Physique du Globe, Paris, France.
1995-1996 Chairman of `Scientific Students Association of Rennes' (non-profit-making organization, 2000 members), Rennes, France.
1994-1997 Elected student member of the `Science and Property of the material University Department Commitee', University of Rennes 1, Rennes, France.
1994-1996 Elected student member of the `Studies and University Life Commitee', University of Rennes 1, Rennes, France.

Teaching Activities

1999 Organization commitee of "Graduate Students Conferences", Institut de Physique du Globe, Paris, France.
1999 Participation to the "Science Week", Institut de Physique du Globe, Paris, France.

Summer School

1999 Human Exploration of Mars, Austrian Space Agency and European Space Agency, Alpbach, Austria ( ESA Presentation ).

Publications

Publications in refereed journals.

2002 Hulot G., C. Eymin, B. Langlais, M. Mandea, and N. Olsen, Small-scale structure of the geodynamo inferred from Ørsted and MAGSAT satellite data, Nature , 416, pp. 620-623, 2002.
2001 Mandea M., S. Macmillan, T. Bondar, V. Golovkov, B. Langlais, F. Lowes, N. Olsen, J. Quinn, and T. Sabaka, International geomagnetic reference field - 2000, eos , 82, pp. 347, 2001.
2000 Langlais B., and M. Mandea, An IGRF candidate main geomagnetic field model for epoch 2000 and a secular variation model for 2000-2005, Earth Planets Space , 52, pp. 1137-1148, 2000.
Mandea M., and B. Langlais, Use of Ørsted scalar data in evaluating the pre-Ørsted main field candidate models for the IGRF 2000, Earth Planets Space, 52, pp. 1167-1170, 2000.
Lowes F.J., T. Bondar, V.P. Golovkov, B. Langlais, S. Macmillan and M. Mandea, Evaluation of the candidate Main Field model for IGRF 2000 derived from preliminary Ørsted data, Earth Planets Space, 52, pp. 1183-1186, 2000.
Mandea M., S. Macmillan, T. Bondar, V. Golovkov, B. Langlais, F. Lowes, N. Olsen, J. Quinn, and T. Sabaka, International geomagnetic reference field - 2000, Phys. Earth Plan. Int., 120, pp. 39-42, 2000.
Mandea M., S. Macmillan, T. Bondar, V. Golovkov, B. Langlais, F. Lowes, N. Olsen, J. Quinn, and T. Sabaka, International geomagnetic reference field - 2000, Pure Appl. geophys., 157, pp. 1997-1802, 2000.
Mandea M., S. Macmillan, T. Bondar, V. Golovkov, B. Langlais, F. Lowes, N. Olsen, J. Quinn, and T. Sabaka, International geomagnetic reference field - 2000, Geophys. J. Int., 141, pp. 259-262, 2000.
Olsen N., R. Holme, G. Hulot, T. Sabaka, T. Neubert, L. Tøffner-Clausen, F. Primdahl, J. Jørgensen, J.M. Léger, D. Barraclough, J. Bloxham, J. Cain, C. Constable, V. Golovkov, A. Jackson, P. Kotzé, B. Langlais, S. Macmillan, M. Mandea, J. Merayo, L. Newitt, M. Purucker, T. Risbo, M. Stampe, A. Thompson and C. Voorhies, Ørsted Initial Field Model, Geophys. Res. Lett., 27, pp. 3607-3610, 2000.
Articles in press Purucker M. E., B. Langlais, N. Olsen, G. Hulot, and M. Mandea, The southern edge of cratonic North America: evidence from new satellite magnetometer observations, Geophys. Res. Lett., in press.
Mandea M., and B. Langlais, Observatory crustal magnetic biases during MAGSAT and Ørsted satellite missions, Geophys. Res. Lett., in press.
Articles accepted Langlais B., M. Mandea, and P. Ultré-Guérard, High-resolution magnetic field modeling: application to MAGSAT and Ørsted data, Phys. Earth Planet. Int., accepted.

Technical Reports

1999 Langlais B., P. Ultré-Gurérard, C. Vernin, M. Mandea, Y. Cohen, and G. Hulot, Ørsted: IPGP commissioning of the OVH magnetometer, CNES report, OERS-RP-0000-0031-IPG, 28 pp., 1999.

Others

2002 Langlais B., The magnetic field of the Earth and of Mars: new results from the Ørsted and Mars Global Surveyor spacecrafts, PhD thesis, Institut de Physique du Globe, Paris, 306 pp., 2001. (in French)

Communications

2002 Chambodut A., J. SchwarteG., B. Langlais, H. Lühr and M. Mandea, The selection of data in field modeling, 4th Ørsted International Science Team Conference , Copenhagen, September 23-27, 2002.
Hulot G., C. Eymin, B. Langlais, M. Mandea and N. Olsen, Small-scale structure of the Geodynamo inferred from Ørsted and Magsat satellite data, 4th Ørsted International Science Team Conference , Copenhagen, September 23-27, 2002.
Langlais B., M. Purucker, and M. Mandea, The orientation of the magnetization in the martian lithosphere, AGU spring meeting, Washington, May 28-31, 2002.
Langlais B., Use of multi-satellite datasets to model the lithospheric magnetic field in polar areas, AGU spring meeting, Washington, May 28-31, 2002.
Langlais B., M. Mandea, and M. Purucker, Sur l'aimantation de la lithosphère martienne, Réunion des Sciences de la Terre, Nantes, April 9-12, 2002 (in French).
Hulot G., C. Eymin, B. Langlais, M. Mandea and N. Olsen, Small-scale structure of the Geodynamo inferred from Ørsted and Magsat satellite data, 1st CHAMP Science Meeting, Potsdam, January 22-25, 2002.
Purucker M., N. Olsen, D. Ravat, P. Schwintzer and B. Langlais, Improving global crustal temperature, geologic variation, and lithospheric strength models utilizing the lithospheric magnetic field derived from CHAMP, 1st CHAMP Science Meeting, Potsdam, January 22-25, 2002.
2001 Langlais B., M. Mandea, A new study of observatory crustal magnetic biases using Ørsted data, IAGA-IASPEI, Hanoi, August 19-31, 2001.
Langlais B., M. Purucker, and M. Mandea, A magnetic map of Mars : derivation and interpretation, IAGA-IASPEI, Hanoi, August 19-31, 2001.
Langlais B., M. Mandea, High degree and order secular variation models derived from MAGSAT and Ørsted data, IAGA-IASPEI, August 19-31, 2001.
Purucker M., B. Langlais, G. Hulot, M. Mandea, and N. Olsen, A new global lithospheric magnetization model validated and refined using new satellite observations, AGU spring meeting, Boston, May 29 - June 22, 2001.
Purucker M., B. Langlais, and M. Mandea, Terrestrial and Martian magnetizations of lithospheric origin: Comparative Planetology, AGU spring meeting, Boston, May 29 - June 22, 2001.
Langlais B., M. Mandea, and M. Purucker, Martian Magnetic field: From Mars Global Surveyor to NetLander 2nd NetLander Scientific Symposium, Nantes, April 2-4, 2001.
Purucker M., B. Langlais, and M. Mandea, Interpretation of a magnetic map of the Valles Marineris region, Mars, Lunar and Planetary Science Conference, Houston, March 12-16, 2001.
2000 Mandea M., G. Hulot, B. Langlais, A. Chulliat, A. Pais, and C. Eymin, Main field, secular variation, and core flows: improvement brought by the Ørsted satellite mission., AGU Fall Meeting, San Francisco, December 15-19, 2000.
Purucker, M, G. Hulot, B. Langlais, M. Mandea, and N. Olsen, Magnetic fields of high degree measured by Ørsted and their interpretation, AGU Fall Meeting, San Francisco, December 15-19, 2000.
Langlais B., M. Purucker, On the origin of the strongly magnetic features south of the Martian crustal dichotomy, AGU Fall Meeting, San Francisco, December 15-19, 2000.
Langlais B., M. Mandea, G. Hulot, A. Chulliat, P. Ultré-Guérard, and Y. Cohen, From Magsat to Ørsted: comparison of the 1980 and 1999 main magnetic fields, SEDI Meeting, Exeter, August 2000.
Tarits P., G. Hulot, M. Menvielle, M. Mandea, Y. Cohen, J. Dyment, and B. Langlais, AMPERE and French contribution to the 'Decade of Geopotential Research', AGU Spring Meeting, Washington D.C., June 2000.
Langlais B., M. Mandea, G. Hulot, A. Chulliat, P. Ultré-Guérard, and Y. Cohen, From Magsat to Ørsted: comparison of the 1980 and 1999 main magnetic fields, AGU Spring Meeting, Washington D.C, June 2000.
Langlais B., M. Mandea, G. Hulot, A. Chulliat, P. Ultré-Guérard, and Y. Cohen, From Magsat to Ørsted: Comparison of the 1980 and 1999 Main magnetic field models, OIST (Ørsted International Science Team Meeting), Grasse, May 2-4, 2000.
Hulot G., A. Chulliat, A. Pais, B. Langlais, and M. Mandea, Core surface flows derived from Ørsted data, tests and first estimates, OIST, Grasse, May 2-4, 2000.
Cohen Y., V. Doumouya, B. Langlais, and P. Ultré-Guérard, Monitoring and reducing the magnetic contribution of the equatorial electrojet to Ørsted data, OIST, Grasse, May 2-4, 2000.
Langlais B., P. Ultré-Guérard, M. Mandea, Y. Cohen, and G. Hulot, Le champ magnétique terrestre en 1999: premiers résultats du satellite Ørsted, Réunion des Sciences de la Terre, Paris, April 17-20, 2000 (in French).
1999 Langlais B., P. Ultré-Guérard, M. Mandea, Y. Cohen, and G. Hulot, The Earth's magnetic field in 1999 : preliminary results from the Ørsted satellite, AGU Fall Meeting, San Francisco, December 13-18, 1999.
Mandea M., B. Langlais, A model of geomagnetic field at epoch 2000.5 IUGG, Birmingham, July 18-30, 1999.
Langlais B., P. Ultré-Guérard, G. Hulot, Y. Cohen, and M. Mandea, Searching for an optimal satellite network for monitoring fast changes within the Earth's main magnetic field, IUGG, Birmingham, July 18-30, 1999.
Langlais B., P. Ultré-Guérard, and M. Mandea, Use of satellite data for separation of internal and external sources in geomagnetic field modeling, IUGG, Birmingham, July 18-30, 1999.
Cohen Y., G. Hulot, M. Mandea, P. Ultré-Guérard, B. Langlais, C. Vernin, and J.L. Le Mouël, Preliminary results from the Danish satellite Ørsted, A report from the IPGP group, IUGG, Birmingham, July 18-30, 1999.
1998 Ultré-Guérard P., B. Langlais, and M. Mandea, Separation of internal and external sources in geomagnetic field modeling, AGU Fall Meeting, San Francisco, December 6-10, 1998.

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