RESUBMIT HW07!! -- COVER PAGE YOUR NAME:

Extra credit to those who handed in earlier version.

NOTE!! we'll do this in class, step by step.

OPEN IN GOOGLE EARTH --Fly to Emigration Canyon UT

FIRST:

Reconnoiter, meaning, get a sense of the land. Turn off the sponsored links.

Download the contours application into Google Earth (go to: http://www.kk.org/cooltools/archives/002970.php )

Look at the terrain without contours. LINK. For many of us, terrain can look reversed in images, meaning, ridges look like valleys and valleys look like ridges. See whether looking at the image upside down, meaning, north at the bottom of the image, makes a difference LINK. Double click on the compass N for North to get north back at the top of the screen.Look at the terrain with contours LINK.

Think about Emigration Canyon. It's south and east of the University of Utah and important to pioneer history. Most historians blame the Wasatch Range and the Bonneville Salt Flats for the tragedy of the Donner-Reid party in the Sierra Nevada. This stretch of the trail is where the LDS pioneers came into the valley. But first they had to negotiate the terrain of the profile you are going to draw. It's so steep that on the west side of the mountain the wagon wheels were blocked from rotating and logs were used to not let wagons run out of control down the hill. You can walk this route. It's an historic trail.

Zoom in until your screen with USGS contours shown, looks like HW07a.

SECOND.

We're about to work on your handout,

First look at HW07a. Here's a web LINK to HW07a. Here's the link to the hard copy handout. The map is a gray-scale print out of the jpg image of Google Earth. NOTE: for your assignment #8 you'll print off a similar map of about this scale for your urban setting.

NEXT: go back to Google Earth and zoom in so your screen shows the area at about the scale of the detailed map of HW07b. LINK to screen view in color showing contours. LINK to HW07b which is the same image but gray scale (and LINK to hard copy if you need it)..

NOTE: this is the scale you'll print off as HW08b for your urban setting

Next… on the hard copy sheet…HW07b:

HIGHLIGHT all major contours. We'll do this in class. Use the same color for contours of the same value.

ADD drainages; ADD drainage divide; ADD roads or other cultural features

Your HW07b should look about like this, although your colors will differ. Coaching: think geographic thoughts. Imagine the terrain. Where is the pass that today's road goes across? Imagine if you were a pioneer what it would have looked like. Or if you were a member of the Donner-Reid wagon train, perhaps feeling betrayed by their supposed guide who was miles ahead on a horse while you're trying to get wagons across terrain ... the terrain of your HW07b. How many feet in elevation did you need to cross to get from Last Camp to Little Mountain Summit and then down to Emigration Creek. For your information, the elevation of Great Salt Lake is about 4200 ft a.s.l. (feet above sea level).

THIRD

In this third part of the assignment you'll transfer the topographic information of HW07b to HW07c and draw the elevation profile on the grid of HW07c.

LINK to HW07c and to the hard copy version of it.

Next… use the top of HW7(c)-Profile as your “strip” and add the information from HW07(b) to it.

NOTE: you’ll create a similar graph as HW08c of your HW08 for your urban setting.

For a detailed explation of what you're about to do.http://geology.isu.edu/geostac/Field_Exercise/topomaps/topo_profiles.htm

Make sure you understand the graph (lower 5/6 of HW07c, the part where you're about to draw the elevation profile.

AFTER you have plenty of information on that "strip" meaning the upper margin of your HW07c, then you're ready for the next step. But what is "abundant" information, or "sufficient" information? It varies with terrain. Your "strip" should show (a) the ends of the profile line; (b) major and minor contours where they matter; (c) cultural features such as crossings of roads; (d) major streams; (e) other points of interest. Coaching: these are places right on the profile line. LINK to show how to lay your HW07c page across your HW07b topographic map in order to transfer information from the map to the profile line of your grid. I've shown the transfer of two data points as examples. It's okay to go cumpulsive at this stage and put lots of data onto your strip, but, caution, make sure you label your data points or use a code that's meaningful.

TRANSFER the elevation data of the “strip” line to the graph (y axis is elevation; x axis is distance). You should be gaining confidence at this stage. HW07c shows the two data points I used as examples on the strip transferred to the graph of HW07c.

THEN, you're so close to victory … connect the data points with meaning. Think geographic thoughts. Look at the map LINK to HW07b and its contours as you connect the slopes.

Imagine yourself as an LDS pioneer or Donner Party member… what would you be thinking at Little Mountain Summit? You don’t have to use the exact words… :

THEN. Congratulate yourself.

FOURTH

Draw the profile digitally. See HW07d as an example of the product of this stage of the assignment. You'll do this as HW08d for your urban setting.

How did I do this?

Go to: http://www.heywhatsthat.com/profiler.html Make sure the “radio button” by flat Earth is checked; English units

FIND: Emigration Canyon UT. Be Patient!! WAIT!!! This seems to take forever.

Click on: Add CONTOURS. Congratulate yourself at what you understand. Closely spaced lines are steep areas, hills. Widely spaced lines represent flat places.

Does this make sense? (Sound the trumpets.)

Click on DRAW PROFILE (lower right) … Hint: I had to click CLEAR before DRAW PROFILE worked.

Click on the two places that will be the end places of your profile.

And... there it is!! HW07d.

How does it compare to your hand-drawn profile?

CONGRATULATIONS…

Homework #8 is due, preferably by April 7. Don't hand in in until you feel successful.

Everyone submits or resubmits HW08, even those who were successful. Topography, gradients, and terrain are controlling factors in flows of surface water and ground water, and therefore the transport of contaminants.