The human eye is extremely good at detecting subtle patterns, and similarities
or changes in patterns. Astronomers use visual (or automated) "blink" techniques
to find new stellar objects. This page implements a similar idea for comparing
several geophysical data sets using a JavaScript animator.
Select the two images you want to compare from the two drop-down lists.
All images are shown below to help you identify appropriate filenames.
The speed of the flickering animation can be adjusted by setting the
number of frames (changes) per second in the box labelled "step". |