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SEA KNOLL [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-04-13

English

Subject field(s)
  • Geomorphology and Geomorphogeny
  • Plate Tectonics
  • Hydrology and Hydrography
DEF

An isolated (or tract of) small elevation(s) on the deep seafloor. [Definition standardized by the International Hydrographic Organization.]

CONT

Abyssal hills were formed as oceanic ridge. As the crust moves away from the spreading center, it cools and sinks to a lower depth. The mountainous terrain of the oceanic ridge is maintained, becoming low-lying abyssal hills at depths of more than 6,000 meters. The hills are usually covered with a blanket of unconsolidated pelagic sediments deposited with reasonable uniformity which gradually modifies and smoothes the features but do not change the original volcanic ocean floor topography that formed at the ridge.

OBS

abyssal hill: term standardized by the International Hydrographic Organization in 2008.

French

Domaine(s)
  • Géomorphologie et géomorphogénie
  • Tectonique des plaques
  • Hydrologie et hydrographie
DEF

Élévation isolée (ou groupe d'élévations) de faible hauteur sur les fonds océaniques. [Définition normalisée par l'Organisation hydrographique internationale.]

CONT

Les collines abyssales bordent [les plaines abyssales] vers le large [et] peuvent aussi bien former des îles ou des archipels au milieu de la plaine abyssale que s'insérer entre celle-ci et la base de l'escarpement continental.

OBS

colline abyssale : terme normalisé par l'Organisation hydrographique internationale en 2008.

Spanish

Campo(s) temático(s)
  • Geomorfología y geomorfogénesis
  • Tectónica de placas
  • Hidrología e hidrografía
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