Department of Geological Sciences
University of Texas at San Antonio
One UTSA Circle
San Antonio, TX 78249-0663
I was following the informative discussion on the listserv today morning when one of my undergraduate teaching assistants dropped by... someone in her physics class asked the prof. a question about geomagnetic reversal, and the professor responded that “there is no evidence of the earth’s magnetic field ever switching.” My student did not know whether to laugh or to cry... and at this point I don’t know either. What makes matters worse is that this physics professor is a “magnet guy” so his opinions will be taken at face value in this particular respect.
This professor doesn’t believe in evolution as well... somehow that doesn’t surprise me. I only hope all these visualization resources will help me counter this misconception when these students enroll in my intro geology course.
“It is precisely for this that I love geology. It is infinite and ill-defined: like poetry, it immerses itself in mysteries and floats among them without drowning. It does not manage to lay bare the unknown, but it flaps the surrounding veils to and fro, and every so often gleams of light escape and dazzle one’s vision.”
Töpffer, Nouvelles genevoises (1841)
Dr. Prajukti (juk) Bhattacharyya
Department of Geography and Geology
Upham Hall 119
800 Main St.
Ph: (262) 472-5257
Email: [log in to unmask]
GEOEDUCATION RESEARCH INTEREST GROUP [mailto:[log in to unmask]]
On Behalf Of tibi
Sent: Wednesday, March 05, 2008 8:50 AM
To: [log in to unmask]
Subject: Re: good visualizations of the Earth's magnetic field?
Thanks Cathy very informative and useful not just for Tom but for us as well. Have a nice Day Tibi
the human race is a single twig on the tree of life, a single species on a
single planet. Our condition can thus only be described as extremely fragile,
endangered by forces of nature currently beyond our control, our own mistakes,
and other branches of the wildly blossoming tree itself. Looked at this way, we
can then pose the question of the future of humanity on Earth, in the solar
system, and in the galaxy from the standpoint of both evolutionary biology and
human nature. The conclusion is straightforward: Our choice is to grow, branch,
spread and develop, or stagnate and
Robert Zubrin, Entering Space, 1999
Here are a variety of approaches to this:
and here is a visualizaiton of model data:
On Mar 4, 2008, at 3:01 PM, Eric J. Pyle wrote:
If you wish to see an idealized version (without the
influence of the solar wind), you can use Celestia with the magnetic field
add-on. The basic program can be found at http://www.shatters.net/celestia and the addon at http://www.celestiamotherlode.com. There are a couple of
tweaks to the add-on that allow you to show (or not) various field lines and
---- Original message ----
Date: Tue, 4 Mar
2008 12:13:30 -0800
From: Tom-Pierre Frappé <[log in to unmask]>
Subject: good visualizations of the Earth's magnetic field?
To: [log in to unmask]
>I am teaching an online course ( university level, 3rd year). My
>students are having a lot of difficulty visualizing the geomagnetic
>field, and making sense of how the declination/inclination changes
>Does anyone knows of good online visualization for the magnetic field of
>3D would be best, and interactive simulations would be ideal, but I
>might be wishing for the moon... you can email me your suggestions off
>list, I'll compile them and send a summary back to the list-serve.
>many thanks for your suggestions!
>EOS-Science Education Initiative / ECAC & EOSC114 Administrator
>Dept. Earth and Ocean Sciences
>[log in to unmask]
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