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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A low density, dilute, turbulent pyroclastic flow, usually very hot, composed of a generally unsorted mixture of gases, ash, pumice and dense rock fragments that travels across the ground at high speed and less constrained by topography than a pyroclastic flow.  2, record 1, English, - pyroclastic%20surge

Record number: 1, Textual support number: 1 CONT

A pyroclastic surge is a fluidized mass of turbulent gas and rock fragments which is ejected during some volcanic eruptions.  3, record 1, English, - pyroclastic%20surge

Record number: 1, Textual support number: 1 OBS

Like pyroclastic flows, pyroclastic surges are very fast moving clouds of gas and volcanic particles, and are very destructive. Some differences between the two are that pyroclastic surges travel faster than pyroclastic flows, cover less distance and deposit thinner layers of volcanic material than pyroclastic flows do.  4, record 1, English, - pyroclastic%20surge

Record number: 1, Textual support number: 2 OBS

pyroclastic surge: term used at Natural Resources Canada - Earth Sciences Sector.  5, record 1, English, - pyroclastic%20surge

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Écoulement pyroclastique véloce, relativement dilué et dont le régime d'écoulement est turbulent.  2, record 1, French, - d%C3%A9ferlante%20pyroclastique

Record number: 1, Textual support number: 1 CONT

[Les] déferlantes pyroclastiques [...] sont des écoulements moins concentrés que les coulées pyroclastiques (régime turbulent). On distingue deux zones : les déferlantes basales hydro-volcaniques (base surge) et les nuages de cendres turbulents qui forment la partie supérieure des coulées pyroclastiques (ash cloud surge)  3, record 1, French, - d%C3%A9ferlante%20pyroclastique

Record 1,  Textual support,  Spanish