Tafoni show postglacial and modern wind azimuths that are similar at Bunger Hills

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)
    28 Downloads (Pure)

    Abstract

    The directions of strong winds are important for the distribution of marine salt spray, rock weathering, lake chemistry and the distribution of vegetation in Bunger Hills, a coastal ice-free oasis in East Antarctica. Present-day strong winds (> 10 m s−1) dominantly blow from 118 ± 21 degrees true (°T; ± 1 SD). Orientated tafoni (weathering pits) might form in bedrock surfaces by salt and ice crystallization, thermal stress and saltating sand particles, recording the orientation of a strongly directional wind field since the last deglaciation, which commenced > 30 000 years ago. The orientations of these tafoni, at 101 ± 18°T for 686 measurements at 28 sites, are indistinguishable from the direction of modern-day strong winds (> 10 m s−1), indicating that the orientation of the slope of the ice sheet has been stable throughout the last 10 000 years during the Holocene.
    Original languageEnglish
    Pages (from-to)130-137
    Number of pages8
    JournalAntarctic Science
    Volume32
    Issue number2
    DOIs
    Publication statusPublished - Apr 2020

    Keywords

    • biogeography
    • erosion
    • Holocene
    • palaeowind
    • sea salt

    Fingerprint

    Dive into the research topics of 'Tafoni show postglacial and modern wind azimuths that are similar at Bunger Hills'. Together they form a unique fingerprint.

    Cite this