College of Staten Island, CUNYGEO 101Lab 12 - Glaciers and glacial landscapes

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Name: Giselle Sosa Hernandez Lab 12 Glaciers and Glacial Landscapes Required materials Pencil Ruler Colored Pencils Graph paper (from Blackboard) Pre-lab reading and quiz Read Chapter 14 of yo... ur textbook and review your lecture notes on glaciers. What conditions are necessary for a glacier to form? Some conditions that are necessary in order for glaciers to form is a cold climate, also snow has to be abundant meaning that it can’t melt. Lastly, snow can’t be removed by either wind or avalanches. Describe the main features of glacial erosion. The main features of glacial erosion are U-shaped valleys, cirques, hanging valleys, rocks steps, and glacial grooves, etc. Describe the main features of glacial deposition. The main features of glacial deposition are large glacial erratic, in moraines, outwash plains, and drumlins. lab exercises Part 1 Glacial “retreat” You will be working with data from South Cascade Glacier, WA, which has been monitored in detail by the USGS since 1959. The map below shows the extent of the glacier in 1958 and in 2013. This study source was downloaded by 100000793680026 from CourseHero.com on 04-29-2021 02:14:50 GMT -05:00 https://www.coursehero.com/file/75999413/Lab-12-Glaciers-and-glacial-landscapes-pdf/ This study resource was shared via CourseHero.comOn the map, shade the area that has been lost from the glacier between 1958 and 2013. Given that the grid on the map is 1 km2, estimate the total area that has been lost from the glacier. Given that on the map is 1 km2, the total area that has been lost from the glacier is 1 km2 because when I shaded the area and then saw that the lost area took up 4 area but not completely, I took parts and tried to fit them in about 1 km2 . The USGS have been collecting data since 1959, measuring the winter gains and summer losses of ice from the glacier. The units are in meters of liquid water precipitation equivalent (i.e. how much liquid precipitation would have to fall on the glacier to produce the equivalent amount of ice). This raw data is presented in the table below. First you should complete the “Net gain or loss” column by adding the total winter gain and summer loss for each year. You may choose to do these calculations in Excel. Next you should calculate the total cumulative gain or loss by adding the value for the individual year to the total for all of the previous years. The first three years are completed for you as an example. Year Winter gain (m) Summer loss (m) Net gain or loss (m) Cumulative gain or loss (m) 1959 3.28 -2.58 0.70 0.70 1960 2.21 -2.71 -0.50 0.20 1961 2.40 -3.50 -1.10 -0.90 1962 2.50 -2.30 0.20 -0.7 1963 2.23 -3.53 -1.30 -2 1964 3.25 -2.05 1.20 -0.8 1965 3.48 -3.65 -0.17 -0.97 1966 2.47 -3.50 -1.03 -2 1967 3.29 -3.92 -0.63 -2.63 1968 3.00 -2.99 0.01 -2.62 1969 3.17 -3.90 -0.73 -3.35 1970 2.41 -3.61 -1.20 -4.55 1971 3.51 -2.91 0.6 -3.95 1972 4.27 -2.84 1.43 -2.52 1973 2.21 -3.25 -1.04 -3.56 1974 3.65 -2.63 1.02 -2.54 1975 3.06 -3.11 -0.05 -2.59 1976 3.53 -2.58 0.95 -1.64 1977 1.57 -2.87 -1.30 -2.94 1978 2.49 -2.87 -0.38 -3.32 1979 2.18 -3.74 -1.56 -4.88 [Show More]

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