ERTH 2415 Lecture Notes - Lecture 13: Magnetotellurics, Solar Wind, Scientific Control

• School: Carleton University
• Department: Earth Sciences
• Course: ERTH 2415
• Professor: Jason Mah

Document Summary

Takeaways: describe the characteristics of the earth"s magnetic field, describe solar activity, understand the interaction between the solar wind and the earth"s magnetosphere, and its impact on technological system. Metallic ore bodies are more conductive than the surrounding rocks. Density increasing from surface to center. o: the internal geomagnetic field, internal geomagnetic field due to movement of liquid iron in outer core from. Earth"s rotation and heat transfer by convection at the outer-inner core boundary: magnetic lines of force: theoretical representation of the force acting on a small magnet, internal geomagnetic field resembles that of a bar magnet. Equator: horizontal lines of force, parallel to surface. Magnetic poles: vertical lines of force, pointing in at north magnetic pole, and pointing out at south magnetic pole: magnetic poles do not coincide exactly with geographic poles, slow variations. Over a few years: magnetic poles wander around the geographic poles.