Transcripts of pPickTutorial
Here's the recording at station BFO We're going to pick the P wave. I was always taught that the best place to pick the P wave is the last datapoint right before the P wave comes in. before the P wave comes in. So here is before the P wave This is a nice quiet station. The P wave is this arrival right here. So I am going to pick the P wave as this point right there. And I suppose you could argue that it's the point right before that one because it looks this is a little bit outside of the actual noise envelope. But, anyway, this is the point I'm going to pick. So now we want to know the arrival time. I'm telling you in my plot that the beginning of this record here is August 24 at 1 hour, 37 minutes and 9 seconds. Every two of these grey lines is 10 seconds. So we can just count up and figure out where this point is. So, here's 10 seconds, Here's another 10, here's another 10, another 10, So 10, 20, 30, 40, 50, 60 and one two three more. This data is taken every one second. 63 seconds after this time is the arrival. So that means this P wave arrived at 1:38:12 63 seconds is a minute and three. Okay, that's all there is to it.