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The Great Dark Vortex on Jupiter

The Great Dark Vortex on Jupiter. Harry Charalambous Dr. James Frost. Introduction.

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The Great Dark Vortex on Jupiter

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  1. The Great Dark Vortex on Jupiter Harry Charalambous Dr. James Frost

  2. Introduction • The Great Dark Spot of Jupiter is a mysterious anomaly that occurs in the north pole of Jupiter at a latitude of 60 degrees and a longitude of 180 degrees. It is located in the same vicinity as the Aurora, which suggests the dark spot is related to the Aurora. With a size three times the size of Earth, roughly the size of the Great Red Spot, and a lifespan of only approximately ten weeks, the Great Dark Spot is a mystery. The Great Dark Vortex was first discovered by accident by the Hubble Space Telescope in 1997. Scientists at NASA did not know what to make of the spot until it was once again seen during the CASSINI fly-by of Jupiter in 2000.

  3. Abstract • Our study of the Great Dark Vortex on Jupiter is meant to discover how and why the vortex forms and what factors contribute to its formation. The Great Dark Vortex, also known as the Great Dark Spot is currently under investigation for its peculiar formation and deterioration. The three dates I am studying are on September 1997 with the dark spot clearly visible, November 1997 with signs of the deterioration of the Great Dark Spot and its trail, and on August 1999 with no sign of the Great Dark Spot. This information is gathered using the Hubble Space Telescope.

  4. Conclusion • The Great Dark Spot can be seen clearly as it was supposed to be during September 1997 under filters of 218nm, 255nm, 336nm, and 890nm. These are not new results, but they are worth discovering for myself. • Ratios under an assortment of filters further reveal the Dark Spot and its trail during September 1997, and its deterioration during November 1997 in the north pole of Jupiter under a CML of roughly 180 degrees. • The deterioration of the Great Dark Spot is revealed in some of the ratio plots from November 1997. The possible remnants of the Great Dark Spot may be involved in the reformation of the Great Dark Spot as shown with the CASSINI flyby of Jupiter.

  5. Conclusion (cont’d) • Thus, in the future, we may be able to use the remnants of the dark spot to tell us the composition of the spot. It also suggests that the Great Dark Spot again and possibly periodically. • A ratio of 336/218 during September 1997 seems to reveal another dark spot in the south pole of Jupiter. This spot is of similar nature to the Great Dark Spot because it is located in the Aurora and last for approximately the same amount of time. Therefore, the Great Dark Spot can be inferred to be directly related to the Aurora. • A comparison of point values at the Great Dark Spot for different frequencies suggests that the Great Dark Spot’s composition has a spectrum near a frequency of 410nm.

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