PPT-Geomagnetism: Earth’s magnetic field

Dipole Field Strength of Earths magnetic field nT Higher order poles Power spectrum of Earths magnetic field Inclination of Earths magnetic field Inclination of Earths magnetic field. . Astrophysics. II. Markus Roth. Fakultät für Mathematik und Physik. Albert-Ludwigs-Universität Freiburg. Kiepenheuer-Institut für Sonnenphysik. I. . Magnetohydrodynamics. (. for. . astrophysics. about. . compasses. The . Earth‘s. . M. agnetic. Field. You can think of the Earth as having a gigantic bar magnet buried inside. In order for the north end of the compass to point toward the . North Pole. Behavior of Charges. M. agnetism. Magnetism. is a class of physical phenomena that includes forces exerted by . magnets. on other magnets.. The . earliest magnets were found naturally in the mineral . Kiefer. Geol 495/ Hans-Peter Plag. Spring 2011. University of Nevada, Reno. Brief Introduction to Geomagnetic Phenomena: . Relationship to Geodesy and Modern Infrastructure. Properties of lodestone (magnetite) were known to ancient Greeks and Chinese. . Astrophysics. II. Markus Roth. Fakultät für Mathematik und Physik. Albert-Ludwigs-Universität Freiburg. Kiepenheuer-Institut für Sonnenphysik. I. . Magnetohydrodynamics. (. for. . astrophysics. Camera/photography. : . takes . images in . visible, infrared . and/or ultraviolet . light. . . REMOTE. Radar. : maps objects and their surface features (mountains/canyons, asteroids) . by sending . radio signals. Dr. Phillip C. Anderson. W. B. Hanson Center for Space Sciences. University of Texas at Dallas. What is Space Weather?. The conditions and processes occurring in space which have the potential to affect the near Earth environment. . . Astrophysics. II. Markus Roth. Fakultät für Mathematik und Physik. Albert-Ludwigs-Universität Freiburg. Kiepenheuer-Institut für Sonnenphysik. I. . Magnetohydrodynamics. (. for. . astrophysics. In this final session we will examine several evidences from the earth that show that it cannot be billions of . years old, and that line up with the earth being young. Sodium levels in the ocean. This is one of the oldest methods around . Variations with Depth and Temperature. AARON BAGNELL. Approximating Earth’s Magnetic Field. Earth’s magnetic field can be roughly approximated by that of a dipole tilted at an angle of 11.5 degrees from Earth’s axis of rotation. ~Magnetosphere. Earth’s Magnetic Field. The Earth acts like it has a giant bar magnet buried in it.. The magnetic field of the Earth is caused by convections currents of the molten iron and nickel interior of the Earth. First magnets were . lodestones . – rock with iron ore. Found in . Magnesia, . Greece about 2000 years ago . Chinese used for navigation in 12. th. century. Possible (common) shapes: . bar, horseshoe, disk, flat, really anything. Ch. 23. Chapter 24. : Magnetism. Final Exam. Tue Dec 20, 11.30am—1.30pm. Cumulative, multiple-choice, 2-3 . qns. per chapter up to . Ch. 22, and 5-6 . qns. per chapter after that. . All questions you will have seen before on lecture slides, midterms, or review sessions (. the Earth's magnetic field at a given location. Objetive. The . objective of the activity is to measure the magnetic field of the Earth . an . a given . area. The relation . between . maximum . and minimum .