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Pyroclastic flow
| Earth Science |
- Lateral flowage of a turbulent mixture of hot gases (≈400°c) and unsorted pyroclastic material (volcanic fragments, crystals, ash, pumice, and glass shards) that can move at high speed (100 miles an hour or more). also known as a "glowing avalanche" or "nueé ardente."
- A fast density current of pyroclastic material, usually very hot, composed of a mixture of gasses and a variety of pyroclastic particles (ash, pumice, scoria, lava fragments, etc.); produced by the explosive disintegration of viscous lava in a volcanic crater or by the explosive emission of gas-charged ash from a fissure and which tends to follow topographic lows (e.g. valleys) as it moves; used in a more general sense than ash flow. compare -pyroclastic surge, ash flow, nuee ardente, lahar. sw, sn, gg
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Flow, английский
- Flux;débit
- Поток, течение
- Поток (в снс; учитываемая за определенный период или на определенную дату экономическая операция — по отношению к доходам, расходам, обязательствам и др.)
- 1. a movement of liquid or gas they used a tourniquet to try to stop the flow of blood. 2. the amount of liquid or gas which is moving the meter measures the flow of water through the pipe.
- N поток information ~ поток информации
- Поток
- In tidology, the rising of the tide; the opposite of ebb. also, the course or direction of running waters.
- Said of an incoming tide.
- Describes the smooth surface characteristics of the powder coating
Flow, английский
Flow, английский
Flow, английский
Flow, английский
Flow (measured), английский
Flow (stream), английский
Flow a t tenua t i on, английский
Flow agent, английский
Flow analysis, английский
Анализ потоков
Flow and return, английский
Flow area, английский
Площадь живого сечения потока
Flow au gmen ta t i on, английский
Flow augmenting, английский
Увеличение потока
Flow balancing, английский
Flow banding, английский
Flow box, английский
Flow brazing, английский
Flow breaks away on the upper surface, английский
Flow breccia, английский
Flow brightening, английский
Pyroclastic, английский
- Pertaining to fragmented (clastic) rock material formed by a volcanic explosion or ejection from a volcanic vent.
- An igneous rock composed of angular rock fragments that originate from a volcanic explosion.
- (adj.) pertaining to clastic rock particles produced by explosive, aerial ejection from a volcanic vent. such materials may accumulate on land or under water. compare - epiclastic, volcaniclastic, clastic. g. smith & hp
- General term for any rock composed of material ejected explosively from
Disintegration, английский
- Of concrete or the like, the deterioration into small fragments or particles.
- Разрушение; дробление, измельчение; распад; расслоение
Topographic, английский
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Pumice, английский
- Light-colored, frothy volcanic rock, usually of dacite or rhyolite composition, formed by the expansion of gas in erupting lava. commonly seen as lumps or fragments of pea-size and larger, but can also occur abundantly as ash-sized particles.
- Lava having a highly porous, loose, spongy, or cellular structure; of relatively high silica content; used in powdered form as an abrasive in polishing, etc.
- Пемза pump насос
- (a) [soils] rock fragments > 2 mm in diameter (i.e., retained upon a 2 mm sieve), or coherent rock layers (pumice flow), made of light-colored, vesicular, glassy rock commonly having the composition of rhyolite. the material commonly has a specific gravity of < 1.0 and is thereby sufficiently buoyant to float on part 629 - glossary 629-62 (430-vi-nssh, 2008) water. sw; pumice-like fragments < 2 mm in size are called pumiceous ash. st; compare - scoria, tephra; (b) [geology] same as (a) but does not include any size restrictions. sw.
- Light-coloured glassy rock formed from acid lava. contains abundant
- Porous and lightweight, pumice physically lifts away dead skin cells from the topmost layer of skin for soft, smooth skin. it`s even known to help remove calluses and rough patches. you`ll find it in many body care exfoliators, like scrubs and body washes. find it in our buff it out aha exfoliating body scrub.
Erratic (glacial), английский
Large rocks or other debris deposited by a glacier, usually in an area far removed from its source. commonly used to indicate a big chunk of debris which is clearly out of place and shouldn`t even be where it is.
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