Mars fun

Mars today

• A cold baren desert…

• … with some leftover water?

converted PNM file

Image courtesy: NASA.

Early Mars

• Water!

Wet Mars - Kevin Gill

Image courtesy: Kevin Gill.

• The difference: the atmosphere!

MarsAtmosphere EarthAtmosphere

Mars’s atmosphere today. Image courtesy: NASA.

Earth’s atmosphere today. Image courtesy: http://thebarometer.podbean.com/.

Attention: The images are not to scale!

Magnetic considerations

• A complex magnetic topology

Whether we look at the radial component of the magnetic field or at the number of magnetic field lines, we conclude that Mars has a complex magnetic topology!

MarsMagneticMap

Radial magnetic field (Br) computed at 200 km altitude in color, overlain on gray-shaded topographic gradient map of Mars (MOLA data). The dark grey bands show regions of inadequate data coverage (Purucker et al., 2000, Plate 1).

FieldMapsH

The percent occurrence of open magnetic field lines (i.e., connecting the IMF to the Martian atmosphere) at ∼400 km altitude on the nightside and dayside (Brain et al., 2007).



• A simple approach

To understand what happened to Mars atmosphere, one approach is to focus on the electromagnetic dynamics of the atmosphere and decompose the complex magnetic field into chewable bites (Riousset et al. 2014).

MGS_zoom Mars100nT

Image courtesy: NASA/JPL.

100 nT~surface levels of Mars’ crustal fields using (Purucker et al., 2000) magnetic field model (Brecht et al.2010).

This is what we did for a magnetic cusp using a dipole…

Results for a magnetic cusp created by a single dipole with moment μ=1016 A⋅m2 placed 20 km below the Martian surface. Magnetic field lines (solid magenta lines), and magnitude (color map) and direction (solid black arrows) of the current density J in the planes y=0 km and z=112 km. The dynamo current is confined in the altitude range 110≲z≲150 km.

… and for magnetic arcades using series of the same dipole.

Results for “magnetic arcades” created by nine dipoles with the same magnetic magnitudes as above. The dipoles are placed in three rows with alternating up/down directions. The six upward directed dipoles are placed at the coordinates (in kilometers) (−100; −250; −20), (0; −250; −20), (+100; −250; −20), and (−100; +250; −20), (0; +250; −20), (+100; +250; −20); the three downward directed dipoles are inserted in-between at (−100; 0; −20), (0; 0; −20), and (+100; 0; −20). Magnetic field lines (solid magenta lines), and magnitude (color map) and direction (solid black arrows) of the current density J in the planes y=0 km and z=112 km. Again, the dynamo current is confined in the altitude range 110≲z≲150 km.

Aurorae

• On Earth

EarthAurora

• On Earth and Mars

MarsGlobeAurora EarthGlobeAurora

Mars’ aurora? Image courtesy: ESA/Mats Holmström. The expected difference with Earth’s aurora is due to the intricate configuration of the Martian magnetic field.

Aurora Australis as captured by NASAs IMAGE satellite, overlaid onto NASAs satellite-based Blue Marble image. Image courtesy:NASA.

• Let the journey continue!

MarsExploration


Last updated: Thursday, April 10, 2014

CV

Résumé

[mantra-multi][mantra-column width=”1/3″]

Jeremy-cv.pdf[/mantra-column]  [mantra-column width=”2/3″]FULL NAME
Jérémy André Riousset

ADDRESS
Institute for Theoretical Physics/Institut für theoretische Physik
Technical University Braunschweig/Technische Universität Braunschweig
Mendelssohnstr. 3,
Brunswick/Braunschweig, D–38106
Germany/Deutschland

TELEPHONE NUMBERS
+49 (1511) 281-0340 (c)
+49 (531) 391-5178 (o)
+1 (404) 500-RIOU (googletalk)

EMAILS
j[DOT]riousset[AT]tu-bs[DOT]net (o)
jeremy[DOT]riousset[AT]centraliens-lyon[DOT]net (h)

WEB
HTTP://WWW.JEREMY.RIOUSSET.COM [/mantra-column] [/mantra-multi]

[mantra-button-light url=”#”]SUMMARY[/mantra-button-light]

  • Experienced mentor for short and long undergraduate projects.
  • Demonstrated researcher with advanced knowledge of electromagnetics and plasma physics.Dedicated scientist with solid background in computational physics and related techniques, and strong modeling experience in electromagnetics, plasma physics, and gas discharge physics.
  • Quick learner and reliable worker with effective social skills.

[mantra-button-light url=”#”]HONORS AND AWARDS[/mantra-button-light]

  • A. J. Ferraro Graduate Research Award, 2009, The Pennsylvania State University
  • Student Paper Competition, Second Prize, 2009 URSI National Radio Science Meeting
  • Student Paper Competition, Honorable Mention, 2008 AGU Fall Supplementary Meeting
  • A. J. Ferraro Graduate Research Award, 2007, The Pennsylvania State University
  • Student Poster Competition, First Prize, 2007 CEDAR Summer Workshop
  • Student Paper Competition, Honorable Mention, 2006 AGU Fall Supplementary Meeting
  • Student Poster Competition, Second Prize, 2006 CEDAR Summer Workshop
  • French Baccalauréat Awards, Very Good Mention, 1999 French Baccalauréat

[mantra-button-light url=”#”]EDUCATION[/mantra-button-light]
The Pennsylvania State University, University Park, GA, USA

Ph.D., Electrical Engineering August 2010
  • Thesis: Fractal modeling of lightning and lightning related discharges
  • Advisor: Prof. Victor P. Pasko
  • GPA: 3.90/4.00
M.S., Electrical Engineering August 2006
  • Thesis: Fractal modeling of lightning discharges
  • Advisor: Prof. Victor P. Pasko
  • GPA: 3.93/4.00

École Centrale de Lyon, Écully, France

Diplôme d’Ingénieur de l’École Centrale de Lyon August 2006
  • Equivalence: M. Eng., Engineering Sciences

[mantra-button-light url=”#”]RELEVANT COURSES[/mantra-button-light]

  • Engineering Electromagnetics, Electrodynamics, Antenna Engineering, Conformal Antennas, Boundary Value Methods of Electromagnetics
  • Plasma Physics, and Plasma-Assisted Materials Processing
  • Space Astronomy and Introduction to Space Sciences, Fundamentals of Remote Sensing Systems
  • Cloud Physics, and Atmospheric Phenomena
  • Linear Control and System, Non Linear Control and Stability, and Robust Control
  • Probability and Random Variables, and Lasers and Optical Electronics

[mantra-button-light url=”#”]RESEARCH EXPERIENCE[/mantra-button-light]
Technische Universität Braunschweig, Brunswick, Lower Saxony, Germany

Postdoctoral fellow, Institute for Theoretical Physics January 2014–present
  • Research Topic: Investigating extra solar planets’ magnetosphere interaction with the stellar wind through hybrid modeling.
  • Advisor: Prof. Uwe Motschmann

The Georgia Institute of Technology, Atlanta, GA, USA

Postdoctoral fellow, Earth and Atmospheric Sciences January 2011–December 2013
  • Research Topic: Interaction between the neutral winds and remanent crustal magnetic field in Mars’ ionosphere
  • Advisor: Prof. Carol S. Paty

The Pennsylvania State University, University Park, PA, USA

Graduate Research Assistant January 2005–August 2010
  • Investigating initiation and development of lightning and lightning related discharges through numerical and analytical modeling.
  • Advisor: Prof. Victor P. Pasko

[mantra-button-light url=”#”]TEACHING EXPERIENCE[/mantra-button-light]

The Georgia Institute of Technology, Atlanta, GA, USA

January 2011–December 2013
January 2011–June 2012
February 2012, April 2012

Informal Class Instructor
Undergraduate Tutor
Poster Session Judge

The Pennsylvania State University, University Park, PA, USA

Summer 2006, 2008, 2009
Fall 2008, Spring 2009, Fall 2009

REU Graduate Mentor
Grading Assistant

AGU Chapman Conference, Penn State University, University Park, PA, USA

May 10–14, 2009

Local Organizing Committee Member

[mantra-button-light url=”#”]PROFESSIONAL MEMBERSHIPS[/mantra-button-light]

2008–present
2015–present
2005–present

Tau Beta Pi, National Engineering Honor Society
EGU, European Geophysics Union
AGU, American Geophysical Union
Reviewer for the following scientific publications:

  • Atmospheric Research
  • Journal of Geophysical Research
  • Geophysical Research Letters
  • Surveys in Geophysics
  • IEEE Antennas and Propagation Society magazine
  • IEEE Plasma Sources Science and Technology

[mantra-button-light url=”#”]MISCELLANEOUS[/mantra-button-light]

August 2006–August 2008
Fall 2004
April 2004
December 2003
December 2003

Penn State European Student Club Treasurer
Penn State Berkey Creamery Sales Assistant
ZMP (Zentrale Mittelstufenprufung) (German language basic proficiency examination)
Computer Based TOEFL (Test of English as a Foreign Language) (Grades: 260/5)
GRE (Graduate Record Examination) (Grades: 760/460/4)

[mantra-button-light url=”#”]REFERENCES[/mantra-button-light]

Available on request

PhDComicsProgrammer


Last updated: Monday, February 23, 2015