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1. Wind Streaks BY: Jared Flores| Zoe Garibay |Mia Iwanaga|Sabrina Martinez Jennifer Mills | ChandlerPascual|Anna Keziah Pidong Joey Sumulong |Amy Valencia | Jamil Wilkerson http://themis2.mars.asu.edu/fullimages/20040712a.jpg

2. Research Question What causes wind streaks to be light or dark? Our research question is interesting because this feature of Mars is very unique. We have never investigated a feature like this before. This question is important because we can find out where and what wind streaks pick up, either debris or minerals. We can find out what materials Mars contains. This will eventually lead up to solving more mysteries about Mars. Also, we can find out how strong the wind is and what humans can do with it. For example, if we find out how strong the wind direction is, it will determine if humans can go to that certain location. And lastly, our research question is important because it can help us understand surface circulations on Mars. Why is our research question interesting/important? http://history.nasa.gov/SP-467/p42.jpg

3. Hypothesis Sabrina, Amy, Anna: If we look at a lot of wind streaks we will then see that most of them are light, because there are more light colored debris than dark colored debris on Mars. Jennifer, Mia, Jared: If we look at a lot of wind streaks we will then see that most wind streaks are dark. Most are dark because, when the crater hits the surface it digs into the sand. The force of the impact digs into the sand, making it dark. Jamil, Chandler, Joey: If you have a wind streak and you expose it to certain elements for a certain period of time, for example the dirt on the ground could rub off over time, [but not limited to]. Then this would make older streaks darker, because they have been out longer and newer streaks have not had time to become darker through the dirt rubbing off etc. ttp://themis2.mars.asu.edu/fullimages/20030917a.png ttp://themis2.mars.asu.edu/fullimages/20030917a.png

4. http://www.nasm.si.edu/etp/mars/marsimg/mars_windstr.jpg Background Information Crater or Other Fixtures Tail http://byss.arc.nasa.gov/img-pds/imagepool/mgs/ab/ab_1_015_03_prv1.png

5. What are Wind Streaks? • Result of wind erosion and deposition • Change in Mar’s surface by taking materials in one place and leaving it behind another • Wind, wearing out Mar’s surface that contains old debris and providing it with new material • White trail of dust (the tail) coming from usually a crater or other Mars features http://barsoom.msss.com/http/ps/moc/streak.gif

6. How do Wind Streaks form? • By the interaction of wind with its surface features, such as craters • Mostly formed by the Aeolian Process (like erosion, but is on Mars and forms around craters) -Wind picks up sediment with other small material and moves it through the wind, until it is barely touching the sides of a crater -Then, the wind picks up other adobe in the crater and moves it along to the other side of the crater • Dark Streaks: -Forms when higher winds in the atmosphere when it flows down the lee side of obstacles. -Mostly occurs after large dust storms have occurred. -Also occurs at night because the winds are at its strongest and the clearing atmosphere is very stable at night. • Light Streaks: -Forms during dust storms when the atmosphere is more stable -Mostly occurs in a zone of 30 degrees, North to 30 degrees, South http://themis2.mars.asu.edu/fullimages/20091125a

7. › What are some types of Wind Streaks? • Bright and Dark Streaks are the most common Wind Streaks • Bright Streaks -Mostly found in all surfaces -Dispositional Feature -Consists of fine, bright dust -Forms during dust storms -Usually occurs during summer in the south • Dark Streaks -Erosional Feature -Made by Brighter Streaks -Appears when no dust storm -Rare http://themis2.mars.asu.edu/zoom-20030917a F:\Documents\Science\aeolian2.html

8. What are some examples of Wind Streaks? • Image Number: V22220010 (A themis image found in the MP2 website) -Shows darker wind streaks in a group -Tail are all facing one direction -No brighter streaks near http://mp2.mars.asu.edu/ • Orbit Number: 1695 (A THEMIS image found in the THEMIS website) -Shows brighter wind streaks in a group (Consists of fine bright dust) -Tail is facing same direction, but opposite from darker streaks -Located on the low edge of volcano, Styris Major http://themis.asu.edu/zoom-20020606a

9. Methods Spacecraft NASA’s Mars Odyssey Camera THEMIS CAMERA Image Type Visible Images- to see details within the crater MOLA- to see context of image and depth Geologic Features Studied Wind Streaks > Light or Dark streaks Geographic Regions we Focused on Regions on Mars that we are going to focus on is the whole map.

10. Methods Continued

11. Data Chart

16. MOLA: Dark Streaks

17. MOLA: Light Streaks

18. MOLA: Light & Dark Streaks

19. Conclusion • What did your group learn from the data you collected? Refer to your science investigation question. • What would you do differently to make your investigation better? (Think about the data collected and the way you analyzed it or the question you formulated.) • Explain what scientific question could branch off of this study to further scientific research about Mars.

20. What did your group learn from the data you collected? Refer to your science investigation question. • There are more light colored streaks than dark streaks. • > 52 out of 92 (light streaks) • > 34 out of 92 (dark streaks) • Light & Dark streaks are rare • > 6 out of 92 (both streaks) • Most light wind streaks occur or are found east • Most dark wind streaks occur near the 180 degrees longitude, 0 degrees latitude mark • Most light & dark wind streaks occur more east • Rarely any streaks at the edges of Mars (farther out)

21. What would you do differently to make your investigation better? (Think about the data collected and the way you analyzed it or the question you formulated.) • Observe more images that contain more samples of wind streaks. • - Had a lot of THEMIS pictures without our feature • - Gathered a small amount of observations containing wind streaks.

22. Explain what scientific question could branch off of this study to further scientific research about Mars. • Why do light wind streaks go the opposite way of dark wind streaks? • > Shows the wind patterns for Mars • > Can tell scientists if light or dark wind streaks can be near each other