GIS 4035 - Module 7 - Multispectral Analysis

This week, for module 7, we were tasked with analyzing satellite imagery for a mountain range in Washington state, tm_00.img. By analyzing histogram data one can extrapolate important information about the .img file.
The following map deliverable focuses on three features located in the tm_00.img.
Feature 1 criteria: In Layer_4 there is a spike between pixel values of 12 and 18. Name the type of feature responsible for this and locate an example of it on the map.
Feature 2 criteria: Identify the feature that represents both A) a small spike in layers 1-4 around pixel value 200, and B) a large spike between pixel values 9 and 11 in Layer_5 and Layer_6.
Feature 3 criteria:  In certain areas of water, layers 1-3 to become much brighter than normal, 
layer 4 becomes somewhat brighter, and layers 5-6 to remain unchanged. Locate an example area that clearly shows these variations in water, using a band combination that makes them stand out.

The following map deliverable was created in arcMap highlighting all 3 features and showing their location in the original tm_00.img with colored extent indicators. The following RGB band combinations are listed as legends for each corresponding feature and an explanation for how I located the feature is found to the right of each corresponding feature.