Sea level drop refers to the phenomenon in which the shrinking weights ofmelting glaciers cause the surrounding land to rise and therelative sea level to fall.[1][2]
InHöfn, Iceland, the sea level is dropping relative to the land at a rate of about 1.7 cm (0.7 in) per year, and nearby it is dropping 3.8 cm (1.5 in) per year.[3] The effect in Iceland is mainly caused by theVatnajökull glacier. If the land rises enough, the Hornafjörður fjord would become impassable from ships, which would significantly hurt the town.[4] Other countries experience this effect as well; in a portion of Alaska and Canada, the relative sea level is falling by up to 2.0 cm (0.8 in) a year. In Norway, Sweden and Finland, an effect calledFennoscandian land elevation causes the relative sea level to fall by up to 0.7 cm (0.3 in) a year.[5][6]
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