Essays about: "last glacial"

Showing result 1 - 5 of 47 essays containing the words last glacial.

  1. 1. POSSIBLE TIMING OF THE TRANSITION FROM PRE-INDUSTRIAL TO INDUSTRIAL CLIMATE IN THE CENTRAL TO NORTHERN OF SWEDEN, BASED ON PROXY DATA FROM TREE-RINGS

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Mika Falkensjö Oppenheim; [2022-09-28]
    Keywords : Tree-ring; maximum latewood density MXD ; Scandinavia; pre-industrial; industrial climate;

    Abstract : Earth’s climate has varied through time, with orbital forcing as the most dominant force on the climate system the last million years, causing glacial-interglacial cycles. The last glacial period ended about 11.6 thousand years (kyr), ago and the last interglacial maximum around 6.5 kyr ago. READ MORE

  3. 2. Grain Size Analysis of Late Pleistocene Loess Deposits, Jersey

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Joakim Edlund; [2022]
    Keywords : Jersey; loess; grain size; ice age; past climate; Jersey; löss; kornstorlek; istid; forntida klimat;

    Abstract : As the world faces the effects of rapid climate change it is essential that we understand how the Earth’s climate has evolved in recent geological history. The island of Jersey harbours loess deposits which hold clues to recent climate change which have not been extensively studied. READ MORE

  4. 3. The Magnetic Properties and Fabrics of Upper Pleistocene Loess on La Motte, Jersey, and their Palaeoclimate Implications

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Anya Hawkins; [2022]
    Keywords : last glacial; magnetic susceptibility; AMS; temperature dependent magnetic susceptibility; palaeowind reconstruction;

    Abstract : The island of Jersey is an interesting location for palaeoclimate reconstruction given the likely impact of variations in North Atlantic climate and European ice sheet extent during the last glacial period considering their proximal location. These last glacial climatic variations are recorded in the loess sequence from La Motte, Jersey and in order to reconstruct these changes, a detailed magnetic analysis was performed. READ MORE

  5. 4. A re-investigation of hummocky moraine formed from ice sheet decay using geomorphological and sedimentological evidence in the Vomb area, southern Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Tim Bjermo; [2022]
    Keywords : glacial geomorphology; remote sensing; LiDAR; sedimentology; glacitectonite; deformation structures; hummocky moraine; quaternary geology; deglaciation; glacial geomorfologi; fjärranalys; sedimentologi; glacitektonit; deformationstrukturer; småkullig morän; backlandskap; moränlandskap; kvartärgeologi; Earth and Environmental Sciences;

    Abstract : Glacial sediment-landform assemblages have long been used to reconstruct the dynamics of ice sheets throughout the Quaternary time period, particularly so for the period of the last glaciation in northern Europe and southern Scandinavia. One such sediment-landform assemblage is hummocky moraine, which has previously been used as an all-encompassing descriptive terminology strongly associated with dead ice meltout and passive deglaciation. READ MORE

  6. 5. Demography of Birch Populations across Scandinavia

    University essay from Uppsala universitet/Växtekologi och evolution; Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Janek Sendrowski; [2022]
    Keywords : birch; betula; pubescens; pendula; betula pubescens; betula pendula; silver birch; downy birch; demography; population structure; distribution of fitness effects; DFE; dadi; UMAP; PCA; ADMIXTURE; polyDFE; ice age; glaciation; tree; boreal forest; climate change; adaption; tetraploid; diploid-tetraploid introgression; Scandinavia; genetic cluster; pipeline; snakemake; bioinformatics; reproducible; population genetics; postglacial population expansion; demographic history; FEEMS; site-frequency spectrum; SFS; last glacial maximum; LGM; workflow; python; population expansion; population growth; EST-SFS; 0-fold degenerate; 4-fold degenerate; maximum likelihood estimation; MLE; variant call format; VCF; single-nucleotide polymorphism; SNP;

    Abstract : Boreal forests are particularly vulnerable to climate change, experiencing a much more drastic increase in temperatures and having a limited amount of more northern refugia. The trees making up these vast and important ecosystems already had to adapt previously to environmental pressures brought about by the repeated glaciations during past ice ages. READ MORE