Do craters at higher elevations have larger wind streaks than craters at lower elevations?

Transcription

1 Team Epsilon

2 Do craters at higher elevations have larger wind streaks than craters at lower elevations?

3 If a crater is at a higher elevation, then the wind streak will be longer because wind on Earth is sometimes stronger at higher elevations

4 In some spots, wind streaks may be longer on craters that are at higher elevations In other spots craters at a lower elevation may have longer wind streaks Some places on mars there are very long wind streaks, some places there are short wind streaks. On Earth, winds are sometimes stronger at higher elevations. Where there is a crater with a wind streak, there is usually some others near by.

5 Wind streaks are defined as dark and light streaks caused by wind erosion

6 Wind streaks are formed by wind erosion and wind deposition. The wind might pick up small partials and cause the area to be eroded.

7 Wind streaks look like teardrops coming from mars surface Wind streaks can be both dark and light Craters are places in the ground that have been hit by a small particle that enters the atmosphere of a planet and hurtles towards the planet and crashes

8 Latitude longitude grid MOLA shaded relief/ colorized elevation Themis day IR 100m Global mosaic v11 MOLA shaded Relief (NE) + 1 plots JMARS for MSIP Themis Stamps

9 1.Go to marsed.asu.edu 2.Scroll down and click on JMARS for MSIP 3.Log onto JMARS as a guest or if you have a login, login to it that way 4.Click on add new layer 5.Click on maps and add MOLA colorized elevation 6.Then click on add new layer again 7.Add,under maps, Themis day Global mosaic 8.Put the MOLA colorized elevation at the top of the list. Then find three different elevations that you would like to explore 9.Once you have found those, record the boundaries at which that spot is. (EX. 230 E 240 E, and 50 N- 40 N) 10. Then pull the MOLA shaded relief onto the top of the list.

10 11.Go to add new layer and click on stamps and click themis. 12.When the window pops up, put in the longitude and the latitude of the square you picked 13.Many blue rectangles should pop up. 14.Look at craters and if you see a crater with a wind streak, click on the stamp it is in and then right click that stamp 15.Then go to Render selected Themis stamp and click render as ABR 16.Look at the crater and record at what coordinates the center of the crater is 17.Then using the measuring tool, located at the top of the page next to the zoom out button, measure the length of the wind streak 18.Record the measurements, coordinates, Image ID number, and the way that the wind streak is pointing. 19.Find ten to twenty wind streaks in that area 20.Repeat steps nine through nineteen for the other two areas 21.Review the data and make any tables or graphs 22.Write down any references used in helping you with this process

11 Boundaries: 230 E- 240 E, and 50 N- 40 N ID Number coordinates length of wind streak way the wind streak is poin:ng V E N Km NW V E N 4.1 Km NW V E N 8.61 Km NW V E N 1.72 Km NW V E N 7.9 Km NW V E N 1.97 Km NW V E N 10 Km NW V E N 6.61 Km N V E N 2.37 Km N V E N 2.52 Km N

12 Boundaries: 140 E- 150 E, and 20 N- 30 N ID Number coordinates length of wind streak way the wind streak is poin:ng V E N V E N V E N V E N 2.26 Km NW 5.3Km NW 6.7Km NW 10.5Km NW V E N 2.23Km N V V E N E N 6.36Km 6.5Km N NW V V V E N E N E N 1.5Km 5.85Km 2.54Km N N N

13 Boundaries: 30n- 20N, and 310E- 320 E ID Number coordinates length of wind streak way the wind streak is poin:ng V E N 5.74Km V E N 4.48Km V E N 2.53Km V E N 1.9Km V E N 6Km V E N 3.4Km V E N 1.05Km V E N 2.31Km V E N 5.56Km V E N.91Km

14 Length Length Elevation

15 There is no relationship between the length of the wind streak and the elevation that the crater is at As the elevation goes up, the length of the wind streak does not go up On the scatter plot, as the elevation gets higher, the length does not get longer You cannot measure the wind streaks accurately without being on Mars

16 Our hypothesis was proved wrong there was no correlation between the elevation and the length of the wind streak The lengths were not affected by the elevation that the crater was at If we could have done something different, we would have seen if we could do anything more accurately with the data

17 is- a- crater.htm /themis.asu.edu/node/5838