Related by context. Frequent words. (Click for all words.) 65 Mount Kelud 58 volcanology 57 Phivolcs 57 Merapi 57 Seismology Phivolcs 57 Volcanology 55 Surono 55 Mount Merapi volcano 55 Tungurahua 55 volcano 54 Mayon Volcano 54 vulcanologist 53 Mayon volcano 53 Vulcanology 52 Japan Meteorological Agency 52 pyroclastic flows 52 Seismology 51 Bulusan 51 Geophysics Agency 51 Indonesia Mount Merapi 50 volcanic activity 50 volcano crater 50 geological disasters 50 Mount Merapi 50 Sinabung 49 World Meteorological Organisation 49 Mount Sinabung 49 spewed ash 49 Solidum 48 volcanic plume 48 Athens Geodynamic Institute 48 Mayon 48 extinct volcano 48 active volcanoes 48 Walhi 48 Renato Solidum 48 meteorological bureau 48 volcano slopes 48 volcanologists 47 vulcanologists 47 dormant volcano 47 seismological bureau 47 undersea quake 47 seismic activity 47 Nabire 46 volcanic 46 Qinghai Tibet Plateau 46 mudflows 46 Meteorological Agency 46 tectonic plates collide 46 active volcanos 45 Administration PAGASA 45 Maluku province 45 volcanologist 45 lava flows 45 Solok 45 Meteorological Station 45 volcanic debris 45 Sumatera 45 Disaster Prevention 44 Kilauea Volcano 44 Kardono 44 Mount Redoubt 44 volcanic crater 44 Yogyakarta 44 East Nusa Tenggara 44 lava 44 Strong aftershocks 44 eruption 44 Sleman 44 Alaska Mount Redoubt 44 Irian Jaya 44 Klaten 44 aftershocks measuring 44 Indonesia Sulawesi island 44 Rustam Pakaya 44 Sepat 44 glacial lakes 44 Indonesian volcano 44 seismicity 44 Maridjan 43 Sumatra province 43 icecap 43 tremor measuring 43 volcanos 43 volcanoes 43 Meteorological Department 43 Disaster Mitigation 43 earth tremors 43 Sorsogon province 43 Sulfur dioxide 43 densely populated Java 43 landslides 43 Astronomical Services 43 volcanically active 43 Meteorological 43 peat fires 43 Tangjiashan 43 Geophysics Institute 43 lava flow 43 mud slides