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Su<strong>mm</strong>ary<br />

Both the observed uplift and gravity rates at Ny-Ålesund<br />

are larger than that expected from the PGR effects.<br />

Our study indicates;<br />

(1) Relative sea level (RSL) changes:<br />

not major origin<br />

(2) Present-day ice melting (PDIM):<br />

If the recent ice melting rate increases, it can be<br />

a strong candidate to explain the difference between the t<br />

observed ed rates and the predicted ones.<br />

(3) Ambiguity of the computation of PGR effect:<br />

Computation is sensitive to both the ice mode and Earth’s<br />

structural parameters.<br />

At Ny-Ålesund<br />

lesund, the horizontal rates are useful to<br />

constrain the discussion of the vertical rate of the PGR.

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