A volcanologist or vulcanologist is a geologist who studies the processes involved in the formation and eruptive activity of volcanoes and their current and historic eruptions. Volcanologists frequently visit volcanoes, especially active ones, to observe volcanic eruptions, collect eruptive products including tephra (such as ash or pumice), rock a...
volcanologist, volcanist Someone who is a specialist in the study of volcanic phenomena.
scientist who studies volcanoes