• Login
    View Item 
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • Geosciences
    • View Item
    •   Home
    • University of Alaska Fairbanks
    • UAF Graduate School
    • Geosciences
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Scholarworks@UACommunitiesPublication DateAuthorsTitlesSubjectsTypeThis CollectionPublication DateAuthorsTitlesSubjectsType

    My Account

    Login

    First Time Submitters, Register Here

    Register

    Statistics

    Display statistics

    Vegetation reconstruction and climate evolution of Lake Dood, Darhad Basin, Northern Mongolia, over the past 4,500 years

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Wang_Y_2004.pdf
    Size:
    131.1Mb
    Format:
    PDF
    Download
    Author
    Wang, Yiming
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/6062
    Abstract
    A semi-quantitative pollen index and stable isotopes of carbon and nitrogen are used to reconstruct late Holocene changes in moisture availability in the Darhad Basin, northern Mongolia. Palynomorphs extracted from cores of lake Dood indicate that the surrounding Darhad Basin was much wetter at 4,200 cal. yrs B.P. Beginning at 2,900 cal. yrs B.P., humidity in the Darhad Basin decreased until 300 cal. yrs B.P. Humidity and warmth returned briefly during the Medieval Warm Epoch, from 1,370 to 930 cal yrs B.P. (AD. 580 to 892). Increasing proportions of forest to steppe pollen types suggests a response to warmer summer temperatures and/or increased moisture during the 20th century warming. Differences in lake levels between lakes Dood, Telmen (300km to the south), and Hövsgöl (60km to the east), suggest that available moisture varies over short distances. Temperature changes driven by solar insolation appear to exert significant control over the regional water budgets of both lake Telmen and lake Hövsgöl, whereas moisture availability in the lake Dood region is affected by changes in atmospheric circulation over Eurasia.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2004
    Date
    2004-05
    Type
    Thesis
    Collections
    Geosciences

    entitlement

     
    ABOUT US|HELP|BROWSE|ADVANCED SEARCH

    The University of Alaska is an affirmative action/equal opportunity employer, educational institution and provider and prohibits illegal discrimination against any individual.

    Learn more about UA’s notice of nondiscrimination.

    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.