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Retrieving "Global Sea Levels" from the archives

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  1. Bering Strait

    Linked via "global sea levels"

    Paleogeography (Beringia)
    The strait's shallow nature has historically allowed for the formation of a land bridge, known as Beringia, during periods of lower global sea levels, particularly during Pleistocene glacial maxima. This land bridge was crucial for the migration of Pleistocene megafauna and, crucially, the initial dispersal of anatomically modern humans into the Americas.
    While the tim…

  2. Continental Ice Sheets

    Linked via "global sea levels"

    Sea Level Contribution
    The sequestration of water within continental ice sheets during glacial maxima results in significant eustatic sea-level lowering. During the Last Glacial Maximum (LGM), the combined volume of the Laurentide Ice Sheet and Fennoscandian Ice Sheet depressed global sea levels by an estimated $120$ to $135$ meters …

  3. Land Bridge

    Linked via "global sea levels"

    A land bridge is a naturally formed, submerged or emergent strip of land$ that temporarily connects two larger landmasses$, often across a body of water$$, thereby facilitating the migration of flora$, fauna$, and, in some cases, human populations between them. While the term often implies a connection created during periods of lower global sea levels (eustatic regression), it …

  4. Land Bridge

    Linked via "global sea levels"

    Eustatic Regression and Glacial Periods
    The most frequently discussed formation mechanism involves the lowering of global sea levels during glacial maxima. During these periods, massive volumes of water are sequestered in continental ice sheets, reducing the volume of the ocean basins. If the reduction in sea level is substantial enough (often exceeding $100$ meters), shallow connections between [continents](/entries/continents…

  5. Laurentide Ice Sheet

    Linked via "global sea levels"

    The Laurentide Ice Sheet (LIS) was one of the two major ice sheets covering North America during the Pleistocene glaciations (/entries/north-america-during-the-pleistocene-glaciations/), the other being the smaller Cordilleran Ice Sheet (/entries/cordilleran-ice-sheet/). Extending southward from the Canadian Arctic (/entries/canadian-arctic/), the LIS reached its maximum extent during the Last Glacial Maximum (LGM) (/entries/las…