What is logarithmic scale?
logarithmic scale meaning a constant ratio scale in which equal distances on the scale represent equal ratios of increase. For example, in a logarithmic scale, the distance between 10 and 100 is the same as the distance between 100 and 1000, or between 1000 and 10,000. Logarithmic scales are used when the range of numbers being represented is large
reference: Coral Reef Information System – GlossaryWhat is