mspelto

mspelto

Professor of Environmental Science at Nichols College since 1989. Director of North Cascade Glacier Climate Project since 1983.

Recent Articles

Ofhidro Glacier, Chile Retreat 1986-2019

Ofhidro Glacier glacier terminus change an accumulation zone changes from 1986-2019 in Landsat images.  Red arrow=1986 terminus, yellow arrow=2019 terminus change, orange arrows expanding bedrock areas and purple dots snowline.  Ofhidro Glacier is an outlet glacier on the northwest corner…

Glacier Crevasses As A learning Tool

Guest Post by Clara Deck Instgram: @scienceisntsoscary Crevasses on mountain glaciers are large cracks in the ice which often propagate from the surface downward. The initial break will happen when stress exceeds the inherent ice material strength. This article will…

Alpine Glaciers-BAMS State of Climate 2018

Figure 1. Global Alpine glacier annual mass balance record of reference glaciers submitted to the World Glacier Monitoring Service, with a minimum of 30 reporting glaciers. For the last decade I have written the section on Alpine Glaciers for the…

Zaroshkul Glacier Retreat, Tajikistan

Zaroshkul Glacier in 1994 and 2018 Landsat imagery. Z=Zaroshkul Lake, A=Developing lake, red arrow=1994 terminus, yellow arrow=2018 terminus and purple dots=snowline. Zaroshkul Lake is in the midst of the Pamir Range, Tajikistan and is surrounded by glacier clad mountains.  Here…