This book provides the first comprehensive compilation of cutting-edge research on Merapi volcano on the island of Java, Indonesia, one of the most iconic volcanoes in the world. It integrates results from both the natural (geology, petrology, geochemistry, geophysics, physical volcanology) and social sciences, and provides state-of-the-art information on volcano monitoring, the assessment of volcanic hazards, and risk mitigation measures. As one of Indonesia's most active and dangerous volcanoes, Merapi is perhaps best known for its pyroclastic density currents, which are produced by gravitational or explosive lava dome failures (commonly referred to as Merapi-type nuees ardentes). Merapi's eruptions have posed a persistent threat to life, property and infrastructure within the densely populated areas on the volcano's flanks, as demonstrated most recently by catastrophic eruptions, which attracted worldwide media interest.

This book delivers the present state-of-the-art of scientific characteristics of the unique Ciomadul volcano (Romania, East-Central Europe) from as many aspects as possible.. Multidisciplinary research results obtained on this geologically young volcanic complex are presented to a wider audience (geologists, volcanologists, botanists, archaeologists, historians and teachers). Moreover, the book provides information at a general level for interested laypersons and decision-makers. The first part of the book, after summarizing the research history of Ciomadul, presents the details of the volcanism and related topics (volcanology, geology, landscape evolution, minerals, post-volcanic activity and spa culture) in eight chapters; the second part deals with the palaeo-environmental issues of the larger area, along with human history, in nine chapters.