Monday, March 30, 2020

Mapping Shrinking Glaciers


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

The brain focus of the map is the U.S. Geological Survey's Repeat Photography initiative. USGS has been comparing modern photographs of Alaskan glaciers amongst historical photos, both amongst the same champaign of view. The photographs are compared to document as well as sympathize the changes to glaciers resulting from changing climate.

The Alaska Ice Story Map visits fourteen glaciers inwards the U.S. state. Each glacier tin sack locomote viewed on a satellite map as well as a modern as well as an historical photograph of each glacier is compared inwards the map sidebar. Of the fourteen mapped Alaskan glaciers solely 2 are yet advancing.


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

The map looks at recent aerial imagery of vi dissimilar glaciers. Polylines accept been overlaid on each glacier aerial ikon to demo the glacier's size through time, demonstrating how far each glacier has reduced over the years.


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

Another interesting means to attempt the loss of glaciers is amongst Google Timelapse. Timelapse allows you lot to compare aerial imagery over fourth dimension for whatever place on Earth. You tin sack thence larn inwards the elevate of whatever glacier into Timelapse as well as break the effects of global warming for yourself.

Timelapse provides links to the Medenhall Glacier as well as the Columbia Glacier precisely you lot tin sack run the search box to locate whatever glacier. You tin sack thence run Timelapse to search for the vi glaciers used inwards the Disappearing Glaciers map as well as break the highlighted loss of each glacier for yourself, using the historical aerial imagery.

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