Spectrogram

Volcanic: Mount St. Helens 02/27/2015(UTC)

00:00
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01:00
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02:00
02:00
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03:00
03:00
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04:00
04:00
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05:00
05:00
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06:00
06:00
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07:00
07:00
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08:00
08:00
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09:00
09:00
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10:00
10:00
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11:00
11:00
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12:00
12:00
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13:00
13:00
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14:00
14:00
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15:00
15:00
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16:00
16:00
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17:00
17:00
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18:00
18:00
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19:00
19:00
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20:00
20:00
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21:00
21:00
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22:00

Station

Code, or name, to designate a particular seismic station