Abstract:Abstract. Since 2012, seven perennial snow patches in the northern Japanese Alps have been determined to be very small glaciers (VSGs: <0.5 km2). However, it had
not been determined how such glaciers could be maintained in such a warm
climate. In this study, we calculate the annual mass balance, accumulation
depth, and ablation depth of five of these VSGs, covering 2015–2019 for
four of them (2017–2019 for the fifth) using multi-period digital surface
models (DSMs) based on structure-from-motion–multi-view-… Show more
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