Catastrophic Processes in River Valleys of Volcanic Regions: Geomorphologist’s Point of View

Lebedeva, E.V.

Автор: Lebedeva Ekaterina V.
Сборник: Updates in Volcanology - Linking Active Volcanism and the Geological Record [Working Title]
Глава в коллективной монографии
Год издания: 2022
Место издания: IntechOpen
Первая страница: 27
DOI: 10.5772/intechopen.108141
Аннотация: The river valleys located in volcanic regions are prone to various catastrophicprocesses, including those catalyzed by eruptions. First, to be mentioned amongthem are volcanic mudflows known as lahars. They commonly result from meltingof ice, snow on the mountaintop, and rainfalls immediately following the eruption.This sequence of catastrophic events—“eruption-volcanic mudflow”—is quitecommon and has been well studied. When viewed closely the mud and debris flowin the volcanic regions appears to be brought on by various causes, with manyfactors and agents involved. Quite commonly, an eruption triggers not a singleendo- or exogenic event, but a sequence of interrelated catastrophes following oneafter another. The studied cases allow identifying and describing up to two tens ofprobable scenarios—successions of catastrophic events in river valleys of the volcanicregions. The specific chain in any particular case depends on volcanic activitiesand accompanying events, such as seismic shocks, changes in local topography,hydrothermal activity, and erosion. The river valleys and adjoining areas are themost hazardous and vulnerable areas within as much as a few kilometers from theeruption center as the erupted material tends to accumulate in valleys and rapidlytransported downstream.
Добавил в систему: Лебедева Екатерина Владимировна

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Catastrophic Processes in River Valleys of Volcanic Regions: Geomorphologist’s Point of Viewстатья

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