One site I would suggest visiting is Nova's "Magnetic Storm" site at PBS http://www.pbs.org/wgbh/nova/magnetic/ This is the website companion to a 50-minute Nova epsiode that aired approximately 3-4 years ago. I think the video is excellent. The main topic is magnetic reversals and the supporting evidence, but it also includes some information and visuals of how the magnetic field protects Earth. I don't think, however, that it has much information on declination. Grant D. Smith Western Oregon University - Earth Science Instructor Oregon State University - PhD student in science education [log in to unmask] On Tue, Mar 4, 2008 at 12:13 PM, Tom-Pierre Frappé <[log in to unmask]> wrote: > Hi all, > > 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 > spatially. > > Does anyone knows of good online visualization for the magnetic field of > the Earth? > > 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! > Tom-Pierre > > -- > Tom-Pierre Frappé > EOS-Science Education Initiative / ECAC & EOSC114 Administrator > Dept. Earth and Ocean Sciences > University of British Columbia > 6339 Stores Road > Vancouver, B.C. > V6T 1Z4, Canada > > Phone:(604)822-3063 > fax: (604)822-6047 > [log in to unmask] > > >