Medieval #4: Bramsfield Basin, Antarctica

Khim et al. [2002] reported that a core from the Eastern Bramsfield Basin, Antarctic Peninsula showed that the LIA and MWP were the strongest of the Late Holocene cold and warm periods.

They stated:

The record from core A9-EB2 shows a series of late Holocene climatic events, which are not strictly periodic, that precede the LIA and MWP events and are of comparable duration and amplitude. Although the LIA and MWP are the strongest of the late Holocene cold and warm periods, respectively, core A9-EB2 implies that the marine climate in this sector of the Antarctic margin has been inherently unstable through the late Holocene.

Khim 2002

Original Caption: FIG. 9. High-resolution magnetic susceptibility (MS) stratigraphy based on the modified chronology shows the distinct Neoglacial climatic events, such as the Little Ice Age (LIA) and Medieval Warm Period (MWP); other short-duration, moderately high-amplitude events during the late Holocene, suggest intrinsically unstable climatic conditions for the Antarctic margin.

Boo-Keun Khim, Ho Il Yoon, Cheon Yun Kang, and Jang Jun Bahk, Unstable Climate Oscillations during the Late Holocene in the Eastern Bransfield Basin, Antarctic Peninsula, Quaternary Research 58, 234–245 (2002)

One Comment

  1. Larry Kummer
    Posted Feb 24, 2005 at 6:39 PM | Permalink

    Question from a non-scientist: any research on the impact of these observed (imputed?) temperature fluctations on the Antarctic ice cap? Seems relevant given the potentially disasterous effects forecast by current global warming models. Assuming the MWP and previous warm cycles were of roughtly similar magniture and length to this warm cycle, this should give clues as to what we can expect this cycle — whatever the causes.

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