2020-04-17, 23:04
Yes using Infrasound Arrays and characterizing the detected signals.
1. There are a number of arrays spread out across the country. Some are part of our nuclear monitoring (CTBTO), some monitoring Volcanos, and still others for research.
2. It depends on the source strength, weather and propagation frequencies. With the right atmosphere, a small explosive source can be detected from several hundreds of kilometers. Strong winds blowing the source signal away from the receiver can make that signal undetectable.
3. Accuracy is an interesting question, infrasound propagation is as you can imagine directly affected by the atmosphere. So how do you quantify accuracy, you should or should not see signal based on what? Infrasound modeling is a developing science, so in short as a community we see a lot, and often we can explain why we see or don't see signals.
4. The folks looking at Tornados using infrasound face that problem. in this case you need to have your arrays upstream of the weather front and determine the density of arrays necessary to do that detection.
5. An adequate array will having at least five elements (elements one in the center, with the other four elements to the north, East, South and West) with at least 50m between elements. That is suitable for monitoring the signals that most infrasound sources produce.
1. There are a number of arrays spread out across the country. Some are part of our nuclear monitoring (CTBTO), some monitoring Volcanos, and still others for research.
2. It depends on the source strength, weather and propagation frequencies. With the right atmosphere, a small explosive source can be detected from several hundreds of kilometers. Strong winds blowing the source signal away from the receiver can make that signal undetectable.
3. Accuracy is an interesting question, infrasound propagation is as you can imagine directly affected by the atmosphere. So how do you quantify accuracy, you should or should not see signal based on what? Infrasound modeling is a developing science, so in short as a community we see a lot, and often we can explain why we see or don't see signals.
4. The folks looking at Tornados using infrasound face that problem. in this case you need to have your arrays upstream of the weather front and determine the density of arrays necessary to do that detection.
5. An adequate array will having at least five elements (elements one in the center, with the other four elements to the north, East, South and West) with at least 50m between elements. That is suitable for monitoring the signals that most infrasound sources produce.