Related by context. Frequent words. (Click for all words.) 48 Einarsson 46 Iceland 45 seismicity 44 volcano erupting 44 volcanic activity 43 Olafsson 43 geologically active 41 Eyjafjallajökull 41 seismic activity 41 volcanologist 41 volcanology 41 Eyjafjallajokull volcano 40 Fréttabladid 40 volcanologists 39 Seismologists 39 Grimsvotn 39 Icelandic Meteorological Office 39 Tromsø 39 volcanism 39 Seismic Network 39 Akureyri 38 Greenland 38 volcano 38 British Antarctic Survey 38 aurora 38 icecap 38 ocean acidity 38 ash plume 38 glaciers 37 volcanoes 37 seismologists 37 Gudmundsson 37 Grimsvotn volcano 37 Serreze 37 Sigurdsson 37 Oddsson 37 Seismologist 37 active volcanoes 37 journal Geophysical Research 36 Geophysical Institute 36 volcanic earthquakes 36 Antarctic Peninsula 36 Katla 36 volcanic eruption 36 volcanic plume 36 Svalbard 36 melting permafrost 36 seismology 35 vulcanologist 35 Mount Redoubt 35 eruption 35 Wilkins Ice Shelf 35 volcano eruption 35 auroral 35 Bjarnason 35 Palsson 35 Kilauea volcano 35 Athens Geodynamic Institute 35 Antarctica 35 volcanos 35 Sigfusson 35 Geologists 35 Geophysics Institute 35 Morgunbladid 35 Reykjavík 35 magmatic 35 Reykjavik Iceland 35 glacier 35 volcanic gases 35 Eruptions 35 Kiruna 35 volcanic 35 eruptive 34 Iceland Eyjafjallajokull volcano 34 X ray emission 34 species extinctions 34 Greenland ice 34 volcanic eruptions 34 Seismology 34 Alaska Mount Redoubt 34 USGS geophysicist 34 methane concentrations 34 Gislason 34 continental drift 34 palaeontologists 33 Kuopio 33 mountain glaciers 33 auroras 33 journal Geology 33 Volcanic 33 geomagnetic storm 33 Geosciences 33 Grimsson 33 Keflavik 33 geology 33 Reykjavik 33 Spitsbergen 33 eruptions 33 erupting volcano 33 Alaska Tsunami Warning 33 Antarctic peninsula