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Monday, August 31, 2020

Mapping Shrinking Glaciers


Alaska Ice: Documenting Glaciers on the Move is an Esri Story Map which uses satellite imagery together with comparisons of modern & vintage photographs to document Alaska'a glaciers.

The psyche focus of the map is the U.S. Geological Survey's Repeat Photography initiative. USGS has been comparing modern photographs of Alaskan glaciers alongside historical photos, both alongside the same plain of view. The photographs are compared to document together with empathise the changes to glaciers resulting from changing climate.

The Alaska Ice Story Map visits xiv glaciers inward the U.S. state. Each glacier tin endure viewed on a satellite map together with a modern together with an historical photograph of each glacier is compared inward the map sidebar. Of the xiv mapped Alaskan glaciers entirely 2 are yet advancing.


Disappearing Glaciers is some other Esri StoryMap, this ane is designed to highlight the alarming speed at which glaciers are disappearing closed to the world.

The map looks at recent aerial imagery of half-dozen unlike glaciers. Polylines accept been overlaid on each glacier aerial icon to exhibit the glacier's size through time, demonstrating how far each glacier has reduced over the years.


Timelapse - aerial imagery of the Mendenhall Glacier inward 1991 & 2012

Another interesting agency to attempt out the loss of glaciers is alongside Google Timelapse. Timelapse allows you lot to compare aerial imagery over fourth dimension for whatever place on Earth. You tin thence come inward the advert of whatever glacier into Timelapse together with discovery the effects of global warming for yourself.

Timelapse provides links to the Medenhall Glacier together with the Columbia Glacier precisely you lot tin role the search box to locate whatever glacier. You tin thence role Timelapse to search for the half-dozen glaciers used inward the Disappearing Glaciers map together with discovery the highlighted loss of each glacier for yourself, using the historical aerial imagery.