noun
thawing season; thaw; ice-melting season
Refers to the period when ice and snow melt, typically in spring. Used in meteorological or seasonal contexts.
融氷期に入ると、川の水位が上がる。
When the thawing season begins, the river water level rises.
北極圏では融氷期が年々長くなっている。
In the Arctic, the ice-melting season is getting longer every year.
解氷 means the melting of ice itself, whereas 融氷期 emphasizes the seasonal period.
Compound of 融 (melt), 氷 (ice), and 期 (period/season). The reading ゆうひょうき follows standard on'yomi.