Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of palsa.

Etymologies

Sorry, no etymologies found.

Examples

  • The researchers used red-tinged landforms called "palsas" -- small, lichen-covered hills that form over frozen peat bogs -- as an indicator of the state of the permafrost in an area along the southeast coast of James Bay.

    Global Warming RSS Newsfeed

  • To track the retreat, Payette and his colleagues looked at distinctive plant-covered mounds called palsas that form naturally over ice in the soil of northern peat bogs.

    British Blogs

  • During the study, researchers measured the retreat of the permafrost border by observing hummocks known as "palsas," which form naturally over ice contained in the soil of northern peat bogs.

    Scientific Blogging

  • The researchers measured the retreat of the permafrost border by observing hummocks known as "palsas," which form naturally over ice contained in the soil of northern peat bogs.

    innovations-report

  • The forms reflect the differences caused by environmental factors including the origin of the water (rainwater, groundwater flow, and water bodies), differential peat development and permafrost (palsas and polygons).

    Wetland classifications

  • They noted at that time that only two of the bogs contained palsas, whereas aerial photos taken in 1957 showed palsas present in all of the bogs.

    PhysOrg.com - latest science and technology news stories

  • "If this trend keeps up, what is left of the palsas in the James Bay bogs will disappear altogether in the near future, and it is likely that the permafrost will suffer the same fate," concludes the researcher affiliated to the Centre d'études nordiques.

    PhysOrg.com - latest science and technology news stories

  • A second assessment in 2005 revealed that the number of palsas present in these two bogs had decreased over the course of one year by 86% and 90% respectively.

    PhysOrg.com - latest science and technology news stories

  • Helicopter flyovers between the 51st and 55th parallels also revealed that the palsas are in an advanced state of deterioration over the entire James Bay area.

    PhysOrg.com - latest science and technology news stories

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.