Science et changements planétaires / Sécheresse


Un microrelief provoqué par l’alternance dessiccation/humidification : les gilgais Volume 5, issue 3, Septembre 1994

École normale supérieure, École pratique des hautes études 45, rue d’Ulm, 75005 Paris, France.
  • Page(s) : 211-7
  • Published in: 1994

On certain ground surfaces made of substances which swell under the effect of water, the alternation of humidification and desiccation can create specific microreliefs. Tropical clayey depressions undergoing successive periods of drought and flooding are particularly susceptible to development of this type or microrelief, called gilgai.