Related by context. Frequent words. (Click for all words.) 58 volcano 56 magma 56 molten rock 53 volcano crater 52 lava 51 volcanic activity 51 Merapi 51 lava flow 51 ash plume 51 eruption 48 volcanologist 48 Alaska Volcano Observatory 48 lava flows 48 Indonesian volcano 48 volcanologists 48 Mayon volcano 47 seismic activity 47 Mount Merapi 47 volcanoes 47 caldera 47 St. Helens 47 crater 47 Earth crust 46 eruptions 46 plume 46 Kilauea 46 seismometers 45 volcanic eruption 45 active volcanoes 45 Eyjafjallajokull glacier 45 volcano erupted 45 volcanism 45 earth crust 44 seafloor 44 glacier 44 Volcanology 43 lahar 43 updrafts 43 Surono 43 Mayon 42 subduction zone 42 volcanic 42 volcanic eruptions 42 volcanos 42 permafrost 42 Phivolcs 42 Eyjafjallajokull 42 Eyjafjallajokull volcano 42 Katla 42 ridge 42 sedimentary rock 42 Seismologists 41 neutron star 41 San Andreas Fault 41 meltwater 41 water vapor 41 fissure 41 westerly winds 41 glacial ice 40 tectonic plate 40 mudflows 40 erupting volcano 40 spewing ash 40 volcanic debris 40 rockfalls 39 volcanic rock 39 Geologists 39 vortices 39 tectonic plates 39 Japan Meteorological Agency 39 GNS Science 39 Greenland ice 39 Enceladus 39 crust 38 undersea quake 38 seismologists 38 Mauna Loa 38 molten lava 38 quakes 38 Antarctic ice 38 tectonic 38 ash clouds 37 Krakatoa 37 ash cloud 37 riser pipe 37 containment cap 37 ice crystals 37 seismic waves 37 supermassive black hole 37 Redoubt 37 basalt 37 temblors 37 plate tectonics 37 upwelling 37 mudflow 37 Loop Current 37 rockslide 36 rupture 36 snowmelt 36 vog 36 jet stream