CONS 127 Lecture Notes - Lecture 20: Visible Infrared Imaging Radiometer Suite, Moderate-Resolution Imaging Spectroradiometer, Defense Meteorological Satellite Program
15 Sep 2017
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Document Summary
What is human footprint: a geographic extent of land under human use, a measure of how much we are using the earth"s natural resources, a metric that allows us to calculate human pressure on. How can it be measured: it can be assessed by size of the population, the amount of human settlements (e. g. cities, the degree of resource extraction (e. g. deforestation, oil/gas, mining) Why use remote sensing: avoids confusions when defining what footprint is, offers consistent measurement over time and space, enables iterative revisiting and measurement even at a global extent. Some were flying boats: used for, surveillance forest fire detection fisheries, mapping. Urban areas: about 6000000 photos have been taken of canada, about 1000000 by end of 1940s, characteristics, analogic, black and white (panchromatric, high spcial resolution, individual photos pasted together, straight down and oblique (not straight down)
