A pyroclastic flow is a fast-moving current of hot gas and volcanic matter that flows along the ground away from a volcano at average speeds of 100 km/h but is capable of reaching speeds up to 700 km/h. The gases and tephra can reach temperatures of about 1,000 °C (1,800 °F).
Volcanology is the study of volcanoes, lava, magma and related geological, geophysical and geochemical phenomena (volcanism). The term volcanology is derived from the Latin word vulcan. Vulcan was the ancient Roman god of fire.
A volcanologist, or volcano scientist, is a geologist who focuses on understanding the formation and eruptive activity of volcanoes. Volcanologists frequently visit volcanoes, sometimes active ones, to observe and monitor volcanic eruptions, collect eruptive products including tephra, rock and lava samples. One major focus of inquiry in recent times is the prediction of eruptions to alleviate the impact on surrounding populations and monitor natural hazards associated with volcanic activity. Geologists who research volcanic materials that make up the solid Earth are referred to as igneous petrologists.
Catherine Joséphine "Katia" Krafft and her husband, Maurice Paul Krafft were French volcanologists and filmmakers who died in a pyroclastic flow on Mount Unzen, Nagasaki, Japan, on 3 June 1991. The Kraffts became well known as pioneers in the filming, photographing, and recording of volcanoes, often coming within feet of lava flows. Their obituary appeared in the Bulletin of Volcanology. Since their deaths, their work has been featured in two documentary films by Werner Herzog, Into the Inferno (2016) and The Fire Within: A Requiem for Katia and Maurice Krafft (2022), and a further film, Fire of Love (2022), depicted their lives, relationship and careers using their archived footage.
Harry Glicken was an American volcanologist. He researched Mount St. Helens in the United States before and after its 1980 eruption, and was very distraught about the death of volcanologist David A. Johnston, who was Glicken's mentor and supervisor in Spring 1980 at Mount St. Helens. Glicken was initially assigned to the USGS observation post in the weeks leading up to the eruption but was called away the night before the eruption.
La Soufrière – Warten auf eine unausweichliche Katastrophe is a 1977 documentary film in which German director Werner Herzog visits an evacuated town on the island of Guadeloupe, where the volcano La Grande Soufrière is predicted to erupt.
Encounters at the End of the World is a 2007 American documentary film by Werner Herzog about Antarctica and the people who choose to spend time there. It was released in North America on June 11, 2008, and distributed by ThinkFilm. At the 81st Academy Awards, the film was nominated for Best Documentary Feature.
Joshua Lincoln Oppenheimer is an American film director based in Copenhagen, Denmark. He is known for his Oscar-nominated films The Act of Killing (2012) and The Look of Silence (2014). Oppenheimer was a 1997 Marshall Scholar and a 2014 recipient of the MacArthur fellowship.
André Felix Vitus Singer is a British documentary film-maker and an anthropologist. He is currently Chief Creative Officer of Spring Films Ltd of London, a Professorial Research Associate at the London School of Oriental and African Studies, and emeritus president of the Royal Anthropological Institute of Great Britain and Ireland where he was president from 2014 to 2018.
Into the Abyss is a 2011 documentary film written and directed by Werner Herzog. It is about capital punishment, and focuses on a triple homicide that occurred in Montgomery County, Texas, in 2001. In the film, Herzog interviews the two young men convicted of the crime, Michael Perry and Jason Burkett, as well as family members and acquaintances of the victims and criminals, and individuals who have taken part in executions in Texas. The primary focus of the film is not the details of the case or the question of Michael and Jason's guilt or innocence, and, although Herzog's voice can be heard as he conducts the interviews, there is a minimal amount of narration, and he never appears onscreen, unlike in many of his films.
The Act of Killing is a 2012 documentary film directed by Joshua Oppenheimer, with Christine Cynn and an anonymous Indonesian co-directing. The film follows individuals who participated in the Indonesian mass killings of 1965–66, wherein alleged communists and people opposed to the New Order regime were tortured and killed, with the killers, many becoming gangsters, still in power throughout the country. The film was mostly filmed in Medan, North Sumatra, following the executioner Anwar Congo and his acquaintances as they, upon Oppenheimer's request, re-enact their killings and talk about their actions openly, also following Congo's psychological journey facing the topic.
Barry Voight is an American geologist, volcanologist, author, and engineer. After earning his Ph.D. at Columbia University, Voight worked as a professor of geology at several universities, including Pennsylvania State University, where he taught from 1964 until his retirement in 2005. He remains an emeritus professor there and still conducts research, focusing on rock mechanics, plate tectonics, disaster prevention, and geotechnical engineering.
Salt and Fire is a 2016 thriller film written and directed by Werner Herzog. The film stars Michael Shannon, Veronica Ferres, and Gael García Bernal. It tells the story about a hostage-taking situation set against an ecological disaster in Bolivia. It had its premiere at the Shanghai International Film Festival. It was selected to be screened in the Special Presentations section at the 2016 Toronto International Film Festival.
Kayla Iacovino is an American volcanologist, noted for her widespread fieldwork and experimental petrology. She was the first woman to do her field work in North Korea. Originally from Arizona in the United States, she has worked in countries including Chile, North Korea, China, Costa Rica, Antarctica, Italy, Japan and Ethiopia.
Clive Oppenheimer is a British volcanologist, and Professor of Volcanology in the Department of Geography of the University of Cambridge.
Meeting Gorbachev is a 2018 biographical documentary film directed by Werner Herzog and André Singer about the life of Mikhail Gorbachev, the eighth and last leader of the Soviet Union. The film features three interviews between Herzog and Gorbachev, conducted over the span of six months, and had its world premiere at the Telluride Film Festival on September 1, 2018.
Werner Herzog is a German filmmaker whose films often feature ambitious or deranged protagonists with impossible dreams. Herzog's works span myriad genres and mediums, but he is particularly well known for his documentary films, which he typically narrates.
Fireball: Visitors from Darker Worlds is a 2020 documentary film directed by Werner Herzog and Clive Oppenheimer. The film explores the cultural, spiritual, and scientific impact of meteorites, and the craters they create around the globe.
Fire of Love is a 2022 independent documentary film about the lives and careers of volcanologists Katia and Maurice Krafft. Directed, written, and produced by Sara Dosa, the film had its world premiere at the 2022 Sundance Film Festival on January 20, 2022, where it won the Jonathan Oppenheim Editing Award. It was released on July 6, 2022, by National Geographic Documentary Films and Neon. It received acclaim from critics, and was nominated for Best Documentary Feature at the 95th Academy Awards.
The Fire Within: A Requiem for Katia and Maurice Krafft is a 2022 documentary film directed by Werner Herzog. The film is a tribute to the French volcanologists Katia and Maurice Krafft, who were killed on 3 June 1991, by a pyroclastic flow on Mount Unzen, in Japan.
