Current Forum: Week 1 First Image of the Week Read 28 times  Date: 31-Jan-2001 10:42:00 Author: xxxxxxx Subject: Image of the Week   [Remove] I teach computer applications and have a class called Multimedia Communications. I think I could use these images in presentations or web pages. I also taught accounting and basic business. Some of the economic impacts of agriculture could be studied in those courses. For example, the economic impact of droughts, floods, soil erosion, conservation practices, etc. The marketing system of agriculture could also be incorporated into the high school business curriculum. Discussion Question One: The most obvious square mile to me is in the upper right hand corner of the image. Yes, it is easier to recognize the roads in less developed areas such as Banner County, Nebraska. Discussion Question Two: One part of the circle is lighter than the other part because two different crops have been planted under the pivot's coverage. Discussion Question Three: The upper middle looks like fields and plots because of the patterns of different colors. The grazing land appears to be in the bottom left corner because the land appears to be more rugged with ditches and trees. Discussion Question Four: Water would have to be pretty dirty and murkey to reflect as white. I doubt it would ever reflect totally as white. There seems to be bodies of water in the bottom right between the 2 and 3 on the bottom grid. The black square in the middle left section probably is not water because its shape is too regular. The image from the area east of the ARDC shows a body of water because of the color, shape, and the indication of a dam. Discussion Question Five: There are buildings in the upper right corner of the photo--they appear as white rectangles. Discussion Question Six: I think the road that doesn't run N-S or E-W is located in the bottom right corner of the photo. Discussion Question Seven: Section 29 seems to be located in the middle right of the photo. The white thing in the center is a building. I would guess that it is spring because of the green color of the crops.

Current Forum: Week 1 First Image of the Week Read 23 times  Date: 31-Jan-2001 17:51:00 Author: xxxxxx Subject: Week 1 Assignment   [Remove] Week 1 Assignment Jolene Edmonds 1. The left center block seems to have the clearest square mile as delineated by the roads. Square mile structures could be more easily seen in Banner County because it is a more rural area. It is a less developed area and, therefore, has fewer man made structures that would result in irregular roads. 2. The pivot is located in the upper middle block. I do not know why one part of the area is lighter than the other. Perhaps it is the type of soil or the type of crop. 3. The left center section seems to be field plots. These are recognizable by the rectangular delineation and the changes in color between one plot and the next. Grazing probably occurs in the bottom portion of the view. There are fewer field areas. 4. Water would not be white unless it was very pure. The rectangular black shape in the midsection on the left is not water. The shape is too regular to be a natural water source. The "image" shows the water source as a long irregular shape that is wider at the south end and narrower at the north end. 5. Buildings are located just above and to the right of the center road. 6. The road in the lower right section of the image runs at an angle. It appears as a "curve" in the road. 7. Section 29 is located in the lower right portion of the main image. The white object in the center appears to be a building. The image is probably taken in the early spring because there is a bright green hue, but there does not seem to be a plant maturity.

Current Forum: Week 1 First Image of the Week Read 18 times  Date: 31-Jan-2001 18:01:00 Author: xxxxxx Subject: Comments re: xxxxxxxx  [Remove] I was impressed by the clarity of xxxxxx responses. After reading her answers, I was better able to interpret some of the shapes on the image. I was also able to identify errors in my answers!!! I did wonder how she knew for cetain that the areas around the pivot differed in color because of the type of crop planted.

Current Forum: Week 1 First Image of the Week Read 23 times  Date: 31-Jan-2001 21:47:00 Author: xxxxxxxx Subject: Image of the week   [Remove] 1.        An easily identifiable one-square area is in the center of the map (grid 1-2 by 1-2). As for Banner County, NE; the roads are easy to see but don’t seem to run straight or intersect at mile points. In Area 51, there is too much “ground clutter” to identify the roads. 2.        There is a center pivot right above the square mile identified above. I think the difference in color occurring in a straight line might show that there are two different crops planted next to each other; I also considered the fact that it might show that the pivot traveled half way in one day and wet only half the crop. The wet crop would show up darker than the dry. (Since I don’t know how fast a center pivot travels, I don’t know if this is logical). 3.        The farm plots appear like checkerboard squares of varying colors while the grazing land (located in the lower right) is a constant color. 4.        I guess water could reflect as white if there was a lot of plant growth in it. I have seen lakes almost covered with lily pads and wonder if they would show whiter than other bodies of water. The irregularly shaped black areas toward the bottom of the picture are probably bodies of water. The black areas that are square are probably not bodies of water because their shape is too “perfect.” In the region just east of the farm we can recognize the shape as a body of water because it is dark, it has streams (dark lines) flowing into it, and it has what appears to be a dam at one end. It is different from the other features because of its shape and size. 5.        There is a building site at 1 – 1 (on the grid). 6.        There appears to be a road that runs NW to SE in the lower right square mile. 7.        Section 29 is located in the middle on the right side (where 3-4 intersects 1-2). I can see roads and trees. There seems to be a driveway or path leading to the “white thing” in the middle, so it is probably a shed. It appears to be late spring / early summer because there are brown plots that look newly planted or ready to plant.

Current Forum: Week 1 First Image of the Week Read 21 times  Date: 01-Feb-2001 09:21:00 Author: xxxxxxxx Subject: Image of the week   [Remove] 2. I believe the center pivot is located in the section mark with the following coordinates, 1,2 2,2 1,3 2,3. The only reason that seems logical is the pivot is rotating 180 degrees instead of 360 degrees. The lighter half seems to be the irrigated half. 3. An area that seems to be farm land is located in the following coordinates, 3,2 4,2 3,3 4,3 (top right hand corner). I can recognize the farm land by the straight patterns of land. There does not seem to be any evidence of buildings. I believe grazing land to be located in the lower right hand corner (3,1 4,1 3,0 4,0). 4. Water could be reflected as white in the winter. An area that might be a body of water is located in the upper right section. There are areas that are probably not bodies of water. I can tell this by there regular primeter. The image looks like a body of water because of its irregular primeter. Water has an uneven boundary whereas the other images around it are more symetrical. Also the surface appears flat compared to adjacent areas. 5. Buildings seem to be located in the upper right hand section (1,2 2,2 1,3 2,3 ). Buildings also seem visable by the small rectanglar patterns in there roof areas. 6. A road that does not seem to follow a N-S or E-W direstion is located in coordinates 0,2 1,2 0,3 1,3 ( upper right corner of that section).

Current Forum: Week 1 First Image of the Week Read 15 times  Date: 01-Feb-2001 16:06:00 Author:xxxxxxxxx Subject: re: Comments for Sandra Leaders   [Remove] I thought that the answers were great. I never thought about the fact that the pivot might be set to only irrigate half of the circle. Also, I liked the idea of a lily pond reflecting light. Of course, that would not be too common. xxxxxxx

Current Forum: Week 1 First Image of the Week Read 17 times  Date: 03-Feb-2001 11:39:00 Author: xxxxxxx Subject: Week 1 Questions   [Remove] Responses to ëSome Questionsí                                        Joan Clark 1. Itís easy to identify square mile plots in this image, Iíll choose area (2,1) which I take to mean the area on the far left and the second plot up (Upper left corner, lower right corner). I think this is logical because (1,1) is the lower left corner and my eye reads the top left corner then the lower right corner. That doesnít follow the usual (x,y) coordinates where x isthe horizontal axis. This would not be so easy in the Banner County image because there are hardly any roads. I have no idea what Iím viewing in the Area 51 image. 2. There are a couple pivot irrigation places in are (3,2). My guess on difference in color is two different crops are represented. 3. These areas appear to be strictly field plots: (2,1), (2,2), (2,3), (2.5, 5) and (3,4). Some of the other areas that seem to be mostly field plots are (1,2), (3,1) and (3,2). These areas appear more segmented. The areas I would guess as grazing land are (1,1), (1,3), (1,4) and probably (2,4). 5. It appears that there are buildings in area (3,2) in the upper right quarter of that square mile. 6. In area (3,4) and above there are some white lines that roughly make up a diamond shape. Are those little used roads? They do not follow the N-S or E-W directions of the other roads.

Current Forum: Week 1 First Image of the Week Read 16 times  Date: 03-Feb-2001 12:38:00 Author: xxxxxxx Subject: Week 1 Assignment   [Remove] 1. The mile markers are visibly seen by the county roads. Where I have difficuly is trying to decifer what the details within the mile markers are! Center pivots are easily identifiable, however, reading throught the questions, there are remarks referring to a black and white area which I do not know what they represent. One of the most obvious mile marker locations would be from the lower left hand corner, going in two blocks and up two blocks. This area is distinctly marked by the county roads. 2. Starting from the top, left hand corner, focus between 2and3 and move over to the right two blocks. In the lower right hand corner of this area you will find a center pivot. My explanation for the different color would be that perhaps the crops have been harvested from one side and not the other, or perhaps there are two different crops planted here. 3. From the left hand side, between 1 and 2, the first block in appears to be farm fields. This is because it appears to have a checkerboard affect. Grazing would appear to the case in the area between 1 and 2 at the far right end of the grid (just to the left of the arrow). This appears to be grazing land due to the fact that there are no marked color differences and the land appears to be a bit uneven. 5. Just North of the center pivot areas(as described above) are buildings. 6. The lower, right hand corner; last grid block shows a road that has a curve. This is located in the upper, right hand corner of that block.

Current Forum: Week 1 First Image of the Week Read 24 times  Date: 03-Feb-2001 19:00:00    (Original: 03-Feb-2001 17:17:00) Author: xxxxxxx Subject: Week 1 First Image of the Week   [Remove] The image: I saw this as a way to have third graders imagine they were flying over the state of Nebraska.(I've always been aware of the pivot circles when I fly.) Then asking them what they think they saw, as well as see if they know what kind of image it is , town or country.If country, what is being done on this land?Formulate questions on a KWL chart showing: Know................Want to Know ................Learned What they already....What they want to ......List answers to know.................find out about some.....what they did find of the images. .........out. 1. Upper area...second square from the left. This would be easier to do in farm country than desert.(Area 51)A desert would look very much alike to us,less plant life,even in remote sensing. On the farming image, you could find more items to identify, with plant life around.Roads don't have to be straight in a ranching region. 2. There is a center pivot in the area I chose.(top area, second square from the left)The pivot is in the bottom right of this square. Possible reasons for the color difference: could be growing a different crop than the other, or one crop has been harvested, the other half has not been cut. Another possible answer is growing crops to compare the same crop with and without water from the pivot. 4 Perhaps a frozen surface(white) would reflect better. The areas that appear to be water have an irregular outline shape, while those under cultivation tend to be in geometric shapes.(Squares, rectangles)There is a non-water black shape in a square left side in second square. the black color could mean plowed, but no growing matter,hence,no reflection. In the image east of the ARDC, the body is much larger, with streams emptying into the irregular shaped lake.Basic undertsanding seems to be that people tend to use geometric shapes on the land for farming. Water tends to take irregular shapes. 5.Buildings:These are not as easy to spot, but they are smaller rectangular shapes.I think there is a cluster of buildings in the bottom row,scomd from the left.In that square, the top left corner appears to ahve several small roads, with small squares and rectangles. 6. Bending road: In the top left square, along the right section line, it looks like a road goes off in a generally NW diagonal direction.

Current Forum: Week 1 First Image of the Week Read 14 times  Date: 03-Feb-2001 19:56:00    (Original: 03-Feb-2001 18:39:00) Author: xxxxxxx Subject: Response to the IOW questions   [Remove] Looking at the image of the ARDC farm I think I could use it very effectively when teaching a unit on finding area of various geometric shapes. In this photo there are squares, rectangles, circles, and triangles. I'm sure I could find some photos with pentagons, trapezoids, etc. Then I could incorporate some questions about how many bushels of corn would be produced on a field if the yield were "so many" bushels per acre. It could go on from here. 1. There are several one-mile square areas in this photo. The four in the lower left corner are clearly revealed and the appendix out to the right appears to be a one-mile square. This is a common practice with farmland, as a one-mile square is a section. It would be harder to find these square miles in Banner County because there is more grazing land and less population. The land is not squared off as regularly with roads. The photo of area 51 looks more like the crashed vehicle or spacecraft of the local aliens!! 2. Using the traditional x-y coordinate system, the location of a pivot would be immediately above (2,2). I agree with what seems to be the general consensus that the different colors represent different crops. 3. The areas that appear to be strictly farm ground or field plots are the upper right rectangle (at (4,3)) and the appendix to the right (at (5,2)). These are recognizable as field plots by the neat rectangular shapes. The grazing lands are on the bottom right, both the extreme bottom right and immediately above the curved road. The lower left corner also appears to have some grazing land. 5. The most obvious buildings appear to me to be at (2,3). I surmised that the dotted diamond shape was a fence. However, I have since read that they are access roads. This sounds plausible around a building site. 6. The road that does not follow a north-south or east-west direction must be in the lower right. It appears as a white dotted line running diagonally across the field. However, I first thought one was located be at (1,2). There you can see a curved line; however, it is dark in color. After more thought, I have concluded that it is a tree line.

Current Forum: Week 1 First Image of the Week Read 11 times  Date: 04-Feb-2001 15:03:00 Author: xxxxxxxxx Subject: Week One Image of the Week   [Remove] 1. One mile squares are located in many places on this image. Examples are: 1'1, 1'2', 1'3, etc. For a totally nondirectional, city girl, I think I could find my way around here! The image from Banner County shows roads all over the place. Only one or two are straight and actually cross (upper right), while others may be straight but end abruptly. Others are curved! The image from Area 51, shows roads running diagonally to each other and once again not following any sort of grid pattern. Isn't this where the alien spaceship landed? 2. Center pivot areas are located in grid 3'2' (lower right) and upper left corner of that same grid. One half of the circle could be darker for several reaosns: heavier vegetation, indicating a more mature, leafy crop such as corn; a higher moisture content in that area (again more vegetation, holding more water). The lighter portion of the circle could be a different type of crop being grown there with less leaf canopy (such as beans or grains), or it could be an area that has been harvested, or is drying out and waiting to be harvested. 3. Areas that appear to be strictly farm ground or field plots seem to be located in the upper 2/3 part of the image. Grids 2'1, 2'2, 3'2', etc. Grazing areas appear to be in the lower 1/3 of the image at grids 1'1, 1'2, 1'3', etc. The areas that are dedicated to grazing seem to have a more irregular shape to them, than the field plots which tend to be circular (irrigated) or rectangular in shape. 4. Could water that is frozen (ice or snow covered) reflect back as white? Bodies of water seem to be located in grids 1'2' and 1'3'. An area that is black that may not be water appears in grid 2'1' (a black square) Could this be the shadow of some building? The image that shows a body of water is easy to recognize as it takes on the shape of a river or stream that has been backed by a dam. This shape is an irregular shape and not one that shows a specific structure. (more meandering than straight) 5. Buildings...upper left of grid 3'2'? 6. A road that does not follow the N-S or E-W directional lines is located in grid 1'4' as a white line that is moving in a diagonal across the grid.

Current Forum: Week 1 First Image of the Week Read 15 times  Date: 04-Feb-2001 15:26:00 Author: xxxxxxxx Subject: Image of the Week Question 7   [Remove] 7. I found question 7 interesting. So, I'm going to give it a try. First of all, I'm not sure exactly where this is located, but I'm thinking the grid formed by 3'1', upper left? Roads are definately visible in this image... brown (gravel) most following the N-S, E-W lines. There is a road that runs through one of the mile sections that doesn't follow the one mile pattern. I'm guessing that the white thing in the middle is a building, water tower, of some sort? Maybe water tower to provide supplies for irrigation? Based on the vegetation I would guess that we are looking at late spring or early fall. It appears that the trees are leafed out and that there is some vegetation on the ground, yet. Trees are visible as the form lines that follow roads or fields. Planted probably as shelter belts? What does everyone else think? I looked in the discussion for possible answers to #7. Help?????

Current Forum: Week 1 First Image of the Week Read 16 times  Date: 04-Feb-2001 15:56:00 Author: xxxxxxxx Subject: Re: Image of the Week Question 7   [Remove] More good observations! You are on your way to becoming a 'remote sensing specialist'.

Current Forum: Week 1 First Image of the Week Read 10 times  Date: 08-Feb-2001 13:09:00    (Original: 08-Feb-2001 13:07:00) Author: xxxxxxxxx Subject: Re: Actually from xxxxxxxxxx   [Remove] Current Forum: Computer and General Info.        Read 6 timesÝ Date: 04-Feb-2001 22:06:00 Author: xxxxxxxxx Subject: Image AssignmentÝ Ý[Remove] ------------------------------------------------------------------------ Image assignment 1. Area 1,1 seems to be a good one with creek activity and ponds. Seems like effort is made to utilize the acreage next to a creek. Usually it is hard to get access to this area at times. However, the soil is usually good and productive. 2. 2,3 is the square for the location. Amount of cover is usually the reason for the color difference. This could be due to the type of crop left or rotation for future crops. Like alfalfa on half and corn on the other half so that it would not hurt the entire crop if something happened/ 3. The middle far right plot seems to be the field plots since it is divided into smaller ones with different colors. The lower far right since to be the pasture type setup with no major creeks, etc. since that could be a point source pollution if used as a creek for drinking purposes of cattle. 4. A body of water would normally be black or dark. Certain situations would change this. If the pond was dry, it would be a different lighter color. Soil pollution would also change the color or the pond. It looks like agriculture is very close to the pond for a possible soil pollution entry way and causing it to be lighter. The majority of the ponds on the Navajo Reservation is SW U.S. are this way with shallow depth due to soil pollution. Dark squares could be sewage collecting ponds or other retaining water setups. 5. The buildings seem to be above the pivot sprinkler which is 2,3. Looks like farm buildings. Also look like some within a shelter belt area to for protection. Ý