skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Search for: All records

Award ID contains: 1023623

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. Ice-wedge thermokarst has played an important role in permafrost evolution, and numerous cycles of ice-wedge formation/degradation have occurred through the Quaternary history. Studies of ice-wedge degradation help to explain processes of past ice-wedge thermokarst and predict its future consequences. We developed a conceptual model of ice-wedge degradation/stabilization, which is based on the dynamics of the intermediate layer of the upper permafrost. This model explains high resilience of ice-wedge systems and low probability of formation of large thaw lakes in the continuous permafrost zone. Absence of the intermediate layer at the time of yedoma accumulation and increased precipitation caused very high activity of thaw-lake formation during the Pleistocene/Holocene transition. 
    more » « less