Would you please share the link to the seismograph..
Heynow, Greg_E, that’s a tricky question. Not a ‘tricky’ URL, but rather the page, imo, does not make it easy to understand the wealth of what’s there, and how to take advantage of it. So bare with me as I explain. To begin with go to..
https://www.usgs.gov/volcanoes/kilauea
Where a map of the island will appear, and be populated with all sorts of symbols, black triangles, blue squares, weird little red barbells, dark blue stars, little gray clouds, as well as colored round dots for the earthquakes themselves. And there’s enough of them to not only confuse, but make the uninitiated’s eyes glaze over and move on..
And in all of that is the links to the seismograph traces..
This is, again imo, the greatest resource HVO has ever put online. But you have to figure out how to use it. To that end I suggest using the menu on the right. To understand this.. as you look you will see a list of menu items, but also those little square items on the outside, on its left side, of the menu. There are four of them, and they have little icons without any text. If it is not already selected (I think it’s the default view) select the second one, the one with that funny funnel shaped icon.. and the menu to its right will be titled “Filters.” And by clicking the third item in that list, titled “INSTRUMENTS,” it will expand to give you a list of different types of instruments and their associated icons. And you’ll see that they all are checked active.
By turning off (clicking on) all of these you’ll notice that the corresponding icons on the map itself disappear.. and reappear with another click. For this explanation I’d suggest turning off all but the black triangle Seismograph item. Then you will see the map covered with those triangles. And, by selecting any of them, you’ll see that station’s readout popup. If a station is offline the popup will be blank. But if you hit one that’s working you should see a popup with multiple seismograph traces, all of the same station at different time scales. Click on any of these and it will be enlarged.
I think the signal I posted is from RIMD, which is a station located on the southern side of Kilauea caldera, and is found on the map in that cluster of stations there. I would recommend zooming in to see the summit area itself and a more precise rendering of the cluster of instruments in that area. Once you can differentiate between stations in that area you can select any of them.. I like to stick to particular ones, in that different instruments are set differently, and without intimate knowledge of them it’s good to stick with one or another so as to gain a relative view over time.
After you’ve grokked this, access to the seismographs throughout HVO’s network, go back to the “INSTRUMENTS” menu and turn on other instruments, and notice how they appear on the map. With this you can poke around to appreciate how much data is actually available from this map, besides the seismographs themselves.
And now that you understand this much you might poke around some more, using both the little square icons on the left side and then the different menu items, to realize how much is actually stuffed into this one page..
I hope that helps.