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HAILSTONE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-03-02

English

Subject field(s)
  • Geology
DEF

A small, shallow depression or crater-like pit formed by a hailstone falling on a soft sedimentary surface. It is generally larger, deeper and more irregular than a rain print.

French

Domaine(s)
  • Géologie
DEF

Empreinte laissée par un grêlon.

OBS

Elle est semblable à l'empreinte d'une goutte de pluie, mais en plus grand.

Spanish

Save record 1

Record 2 2003-10-31

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
DEF

Any method of reducing the damaging effects of hailstorms by modifying the characteristics of the hail-producing cloud.

OBS

The currently prevailing hypothesis is that silver iodide seeding provides more hailstone nuclei(and, at the same time, reduces the amount of supercooled water available to build up large hailstones) with the net effect that the hail that reaches the ground is smaller and less damaging, and also has a high probability of melting before reaching the ground.

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
DEF

Méthode d'intervention dans l'atmosphère en vue de réduire les effets dommageables de la grêle.

Spanish

Campo(s) temático(s)
  • Fenómenos meteorológicos, climáticos y atmosféricos
Save record 2

Record 3 2002-11-22

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
CONT

Hailstone : Globule or piece of ice, with a diameter varying between 5 and 50 mm or even more, the fall of which constitutes hail.

CONT

Precipitation may take place as very large globules of ice called hail. Hails can vary from 5 mm to several cms in diameter.

Key term(s)
  • ice globule

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
CONT

Si le milieu nuageux contient de grandes quantités de gouttelettes d'eau condensée en surfusion, leur captation par les germes de glace initiaux est trop rapide pour permettre leur cristallisation immédiate et l'évacuation de la chaleur latente correspondante. Il se forme alors autour du germe initial une pellicule d'eau surfondue en voie de cristallisation continue. Ce qui conduit non plus à la formation de flocons de neige mais de globules de glace ou grêlons beaucoup plus denses et lourds et qui le plus souvent ne fondent pas avant d'atteindre le sol.

Spanish

Save record 3

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