This data can help the park predict how the changing glaciers will impact wildlife and tourism.
, 13 of the 19 glaciers in the park have retreated substantially — four are relatively stable and two have advanced. The park, which is nearly 670,000 acres, has various glaciers. Some terminate in the ocean, some in lakes and some on land, according to a press release.
Researchers found that glaciers like Bear Glacier and Pedersen Glacier — lake terminating glaciers — are shrinking faster. According to the study, between 1984 and 2021 Bear Glacier receded three miles and Pedersen receded two miles. An unexpected finding was that the sea-terminating Holgate Glacier has advanced in recent years and seems to be going through the natural process of. The only other glacier to advance during the study is the Paguna Glacier. During an earthquake in 1964, a rock slide covered the Paguna Glacier and kept it isolated.
Black pulled data from 38 years worth of satellite photos taken of the glaciers during the spring and fall. After tracing the outline of all 19 glaciers over the years — totaling about 600 outlines — she compared the lines to identify the rate of recession.
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