The vivid colors in the spring are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water. The bacteria produce colors ranging from green to red; the amount of color in the microbial mats depends on the ratio of chlorophyll tocarotenoids and on the temperature of the water which favors one bacterium over another. In the summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green. http://en.wikipedia.org/wiki/Grand_Prismatic_Spring
3. With this option enabled, if the same event fires 5 timeswithin 2 minutes, SharePoint will suppress the event fromlogging and throw a summary event at the 2 minute mark.The default behavior and can be customized usingPowerShell and the Set-SPDiagnosticConfig cmdlet.