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Overview of Jovian Planets and Their Atmospheric Dynamics

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effie
24 diapositives · 370 Views · Sep 01, 2014

This document details essential concepts related to Jovian planets, including their weather patterns, magnetic environments, and dynamics of their atmospheres. Significant topics covered include high and low-pressure systems, the Coriolis effect, and the dynamo mechanism responsible for magnetic fields. Additionally, due dates for assignments related to this material, including Lab 3 and portfolios, are provided. A focus on key features such as Jovian rings and weather phenomena facilitates comprehension of these massive gas giants.

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  1. Bit of Administration …. • Reading • BSNV Chap. 12 • Homework 9 • Due Friday, April 23, in box by Mathieu office door (6522) Sterling • Portfolios • Due Wednesday, April 28 • Can turn in each one any time for quick turnaround on grade • Lab 3 • Due Wednesday, April 28 • Problem 5, HW 1 is a good starting point for the lab questions • Note typo in Question 3 - “Jupiter” => “Saturn”

  2. Jovian Planets • Jovian Weather

  3. Jovian Planets • Jovian Weather Infrared Visible Jupiter emits 2x the energy it receives from the Sun!

  4. Jovian Planets • (Jovian) Weather Patterns • Essential Idea - • Atmosphere made up of high- and low-pressure systems • High - Bulges in atmosphere • Low - Depressions in atmosphere

  5. Jovian Planets • (Jovian) Weather Patterns • High • Low

  6. Jovian Planets • (Jovian) Weather Patterns • Essential Idea - • Atmosphere made up of high- and low-pressure systems • High - Bulges in atmosphere • Low - Depressions in atmosphere • Atmosphere flows from high to low

  7. N L H N N L H S Jovian Planets • (Jovian) Weather Patterns • Essential Idea - Coriolis Effect

  8. ConcepTest! Why does the ball travel in a circle and come back to him? A) Gravity provides a central force. B) The merry-go-round puts a sideways spin on it. C) The merry-go-round goes half-way around during the ball’s travel. D) The merry-go-round is sloped, and higher in the center.

  9. Jovian Planets • (Jovian) Weather Patterns • Coriolis Effect

  10. Jovian Planets • (Jovian) Weather Patterns

  11. Jovian Planets • Jovian Weather

  12. Jovian Planets • Jovian Magnetic Environment

  13. Jovian Planets • Jovian Magnetic Environment

  14. Jovian Planets • Jovian Magnetic Environment • Radio Wave Emission

  15. Jovian Planets • Jovian Magnetic Environment • Size of Rotation • Magnetosphere Period • Mercury 104 km 58 days • Venus 0 km 243 days • Earth 106 km 1 day • Mars 0 km 1 day • Jupiter 107 km 0.4 days Liquid Metallic Interior ? Yes Yes No Yes

  16. Jovian Planets • Jovian Magnetic Environment

  17. Jovian Planets • Jovian Magnetic Environment • Essential Idea - Dynamo Mechanism for Magnetic Field • Electrical Current => Magnetic Field • Rapid rotation • Liquid metallic core • Convection

  18. ConcepTest! Would you expect the Moon to have a significant magnetic field? A) No, because it does not have a convective core. B) No, because it is not rapidly rotating. C) No, because of A and B D) Yes, because it has a convective core. E) Yes, because it is rapidly rotating. White) Yes, because of A and B

  19. Jovian Rings Jupiter Saturn Uranus Neptune

  20. Jovian Rings • Saturn A B C Cassini’s Division

  21. Jovian Rings • Saturn 70, 000 km across …. 20 m thick!

  22. Jovian Rings • Saturn Velocity A>Velocity B Keplerian! Blueshift S Earth A B Redshift

  23. Jovian Rings • Saturn Snowflakes (few microns) to Boulders (10 m)