Category: Books Online
DEW4.3. Get Earth Images
{ Digital Earth Watch Contents } { All GSS Books } Skip to Summary of Earth Image Resources Relatively close-up images of Earth for monitoring of Earth systems are available through aerial photography (as seen in PicturePost in 3.1 Observe Changing Vegetation and investigation 4.1 Aerial Photography) In investigation 4.2 The View from 400 Miles […]
DEW4.2. What Can You See From 400 Miles Above the Earth?
{ Digital Earth Watch Contents } { All GSS Books } Looking at a satellite or aerial photograph requires us to think about how a view of something familiar, for example, of a school building viewed from the street, alters when seen from above. We experience this somewhat on the nightly news, when we see […]
DEW4.1. Aerial Photography
{ Digital Earth Watch Contents } { All GSS Books } Much of the material in this investigation is provided by Don McCasland of Blue Hill Observatory. The great benefit of kites, balloons, blimps and poles for aerial photography is that they allow relatively close up imagery of the subject. It is fun and educational […]
DEW4. Monitoring Earth Systems
Chapter 4 { Digital Earth Watch Contents } I. Forest Watch Forest Watch (https://forestwatch.sr.unh.edu/index.shtml) is a project in which data on tree characteristics are collected by teachers and students in grades K-12 as an integral and important component of research on forest ecosystems in New England. Each participating classroom is given study plot. Currently under […]
DEW2.4. How to Take the Best Digital Photos
{ Digital Earth Watch Contents } { All GSS Books } You need appreciation of art, technology, and science to be able to capture images with a digital camera to maximize the accuracy and minimize the uncertainty of the measurements. To improve how to use a camera to take digital images for scientific measurement, it […]
DEW3.3. Changes in Mt. St. Helens
{ Digital Earth Watch Contents } { All GSS Books } Use VegetationAnalysis software to observe and measure changes in Mt. St. Helens before and after the great eruption of 1980, AnalyzingDigitalImages software 3 images of Mt. St. Helens:MtStHelens_1973.jpegMtStHelens_1983.jpegMtStHelens_1996.jpeg The Tools 1. Launch the AnalyzingDigitalImages software and open the 3 images of Mt. St. Helens as time series. Calibration procedure […]
DEW3.2. What Has Been in Your Backyard?
{ Digital Earth Watch Contents } { All GSS Books } This investigation was developed by Becca Kranz and John Pickle. Materials and Preparation To do this activity you will need Access to the Internet or download all materials over the Internet first, Familiarity with AnalyzingDigitalImages software and spreadsheet software, Images of pollen maps in order to […]
DEW3.1. Observe Changing Vegetation
{ Digital Earth Watch Contents } { All GSS Books } Leaves and flowers have a dynamic life – if you have time to watch. Taking photographs over a period of time and making a time-lapse movie is one way to begin to appreciate the stages leaves and flowers pass through. Adopt a Leaf: Make […]
DEW2.3. Color in Surface Features
{ Digital Earth Watch Contents } { All GSS Books } Materials DigitalImageBasics software and computer Part 1: Representative Color Since digital sensors in satellites can capture wavelengths of radiation beyond those that we can see, we are faced with the problem of how to represent that data in a digital image. We must choose […]
DEW2.2. Spatial Analysis: Area
{ Digital Earth Watch Contents } { All GSS Books } Materials AnalyzingDigitalImages software Image: Plant Leaf with Ruler (or any image including an object of known size such as a ruler to determine scale). Open the Plant Leaf image the same way as done in Investigation 2.1. Method 1: Rectangle Tool In the tools dropdown […]