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Karl Urban (pikarl@reporter.social)'s status on Tuesday, 11-Jul-2023 12:52:40 CEST Karl Urban

Wikipedia, my love:
Es gibt einen Artikel über spezielle seismische Schwingungen, die Vulkanausbrüchen vorausgehen, in sieben Sprachen: Englisch, Arabisch, Farsi, Katalanisch, Spanisch, Italienisch und:
🥁 Plattdüütsch
In conversation Tuesday, 11-Jul-2023 12:52:40 CEST from reporter.social permalink
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1. Screenshot aus Wikipedia: Harmonic tremor: Harmonic tremor Article Talk Read Edit View history Watch Tools Actions Move General What links here Related changes Special pages Permanent link Page information Cite this page Wikidata item Edit interlanguage links Print/export Download as PDF Printable version From Wikipedia, the free encyclopedia Seismograph recording of harmonic tremor Four major types of seismograms, or seismic signatures A harmonic tremor is a sustained release of seismic and infrasonic energy typically associated with the underground movement of magma, the venting of volcanic gases from magma, or both. It is a long-duration release of seismic energy, with distinct spectral lines, that often precedes or accompanies a volcanic eruption. More generally, a volcanic tremor is a sustained signal that may or may not possess these harmonic spectral features. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquakes and explosions. The relation between long-period events and an imminent eruption was first observed by Bernard Chouet, a volcanologist who was working at the United States Geological Survey. ...
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