[natphil] Invitation to the 2022 J. Tuzo Wilson Lecture on Feb 23rd 4:10 pm

[The J Tuzo Wilson Lecture mailing list]

Dear All,

Sorry if you are receiving multiple copies of this email. A final reminder
of today's Tuzo Wilson Lecture by Prof. Catherine Johnson at 4:10 pm on
magnetic fields of terrestrial planets. Prof. Johnson is involved in
multiple planetary missions, and serves as a Participating Scientist on the
MESSENGER (Mercury) mission and a Co-Investigator on the InSight (Mars) and
OSIRIS-REx (asteroid Bennu) missions.

See you there,
Qinya

On Tue, Feb 15, 2022 at 12:20 PM Qinya Liu <liuqy at physics.utoronto.ca>
wrote:

> Dear Tuzo Wilson Lecture Subscribers,
>
> You are cordially invited to join the 2022 J. Tuzo Wilson Lecture at
> University of Toronto (virtually) on February 23rd at 4:10 pm. The annual
> Tuzo Wilson Lecture commemorates the life and work of J. Tuzo Wilson
> (1908-1993), one of the great earth scientists of his time, and one of the
> founders of Geophysics in Canada. Wilson made decisive contributions to the
> revolution in the Earth Sciences brought about by the establishment of the
> plate tectonics paradigm in the '60s and '70s.
>
> This year, we are very fortunate to have invited Prof. Catherine Johnson
> from University of British Columbia to give the following Lecture:
> ====
> Title:  The Ins and Outs of Terrestrial Planets: A Magnetic Field
> Perspective
> Speaker: Prof. Catherine Johnson
> Affiliation: University of British Columbia & Planetary Science Institute
> Date: Wed, Feb 23, 2022
> Time: 4:10-5:30pm EST
>
> You can join us either through zoom link:
> https://us06web.zoom.us/j/87675012980?pwd=Zk82QzdFYVByRThPWXdQaFYvdG9TQT09
> where you may be asked to provide your email address and name before
> attending (note no password is needed)
>
> or just watch on the Department of Physics Youtube live stream on the date
> and time of the Lecture:
> https://www.youtube.com/channel/UCH2J2YJx3nfN1KygnB1ub4w/live
>
> Abstract: Planetary magnetic fields provide indirect, but fundamental,
> constraints on the internal structure and evolution of terrestrial
> planetary bodies. The presence of a global magnetic field, generated in a
> metallic core today or in the past, is intimately tied to core composition,
> structure, and the cooling history of a planet. Crustal magnetization
> yields a record of the net effects of the dynamo history, silicate iron
> mineralogy and processes that have modified the crust over time. The
> interaction of a planet, its atmosphere and any crustal or core magnetic
> field with the solar wind results in time-varying fields that can be global
> or local in spatial scale, and periodic or transient in nature. These can
> induce electrical currents in the planets interior that result in secondary
> magnetic fields. Such secondary induced fields are sensitive probes of
> interior electrical conductivity structure that in turn depends on
> temperature and composition, in particular volatile content. Over the past
> decade new data sets, sensitive laboratory techniques and advances in
> modeling have clearly shown that Mercury, Venus, Earth, Mars, and the Moon
> each possess unique magnetic field characteristics, providing key insights
> into the diversity of planetary histories in our own Solar System and
> beyond. Here I will review some recent discoveries, highlighting
> outstanding puzzles.
>
> [image: Graphic.jpg]
>
> Bio: Professor Catherine Johnson is a Professor of Geophysics at the
> University of British Columbia, Vancouver and a Senior Scientist at the
> Planetary Science Institute, Tucson. Her research focuses on understanding
> the structure and interior evolution of terrestrial planets, moons and
> asteroids. She was a Participating Scientist on the MESSENGER (Mercury)
> mission and is currently a Co-Investigator on the InSight (Mars) and
> OSIRIS-REx (asteroid Bennu) missions. She is a fellow of the AGU and in
> 2019 was the recipient of the Price Medal of the Royal Astronomical Society
> and the IAGA Shen Kuo Award.
> ===
>
> You can also find more information about the talk on the attached
> poster at:
>
> https://tuzowilson.physics.utoronto.ca/j-tuzo-wilson-lecture-series/the-ins-and-outs-of-terrestrial-planets-a-magnetic-field-perspective/
> as well as.
>
> Please let us know if you have any questions. Feel free to spread the word
> and we look forward to seeing you all at the Lecture on Feb 23rd (Wed).
>
> Qinya Liu
> --------------
> Associate Professor of Geophysics
> Department of Physics & Department of Earth Sciences
> University of Toronto
>
>
>
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