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Notes on open‐system pingo ice, Adventdalen, Spitsbergen

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  • Kenji Yoshikawa

Abstract

Analysis of open‐system pingo ice in Adventdalen, Spitsbergen, reveals its growth process. Ice and water sampled from edge to centre and from top to bottom of open‐system pingos are analysed. The results suggest that, after the underground water supply stopped, pingo ice extended downward. This downward extension seems to lower the level of underground water. The growth of open‐system pingo ice is supported by injecting and/or segregating ice originated from underground water. Sea level and climate changes probably influence the underground water level. This is especially the case for pingos formed on the coastal plain. L'analyse de la glace d'un pingo né en système ouvert dans l'Adventdalen au Spitzberg révèle son processus de croissance. La glace et l'eau échantillonnées depuis le bord jusqu'au centre, et depuis le sommet jusqu'à la base du pingo, ont été analysées. Les résultats suggèrent que, après que l'alimentation en eau souterraine a été arrětée, la glace du pingo s'est accrue vers le bas. Cette extension vers le bas paraǐt avoir abaissé le niveau de l'eau souterraine. Cette glace paraǐt ětre de la glace d'injection et de la glace de ségrégation. Les variations climatiques et les changements du niveau marin ont probablement influencé le niveau de l'eau souterraine, surtout pour les pingos formés dans la plaine cǒtière.

Suggested Citation

  • Kenji Yoshikawa, 1993. "Notes on open‐system pingo ice, Adventdalen, Spitsbergen," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 4(4), pages 327-334, October.
    • Handle: RePEc:wly:perpro:v:4:y:1993:i:4:p:327-334
    DOI: 10.1002/ppp.3430040405
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