Page 317 - Earth's Climate Past and Future
P. 317

CHAPTER 16 • Climate Changes During the Last 1000 Years  293








































        A                                                   B



































        C                                                   D
        FIGURE 16-3 Coring mountain glaciers Drilling ice cores from (A) annually layered
        mountain ice requires (B) hauling equipment and supplies up and down the sides of mountains
        and ice caps and then (C) drilling at elevations approaching 20,000 feet, sometimes with
        (D) towering summer storm clouds rising from lower elevations and looming in the background.
        (Courtesy of L. G. Thompson, Byrd Polar Research Institute, Columbus, OH.)
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