Roundup: Calving, ‘Record grooves’ and Story Maps

Calved Greenland Iceberg 

3238944631_33ac4412f1_o
A calved iceberg in Greenland (Photo: Flickr)

“Iceberg calving is ultimately related to the mechanical failure of ice. However, predicting mass loss from calving events remains challenging because calving takes on diferent forms under different conditions. For example, large tabular icebergs sporadically detach from freely foating ice tongues with many years of quiescence between major calving events”

Read more on the physics of iceberg calving here.

 

Telling a Glacier Story through Maps

Advancing Harvard Glacier (Photo: Flickr)

 

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

Read more on ESRI’s Story Maps and Time-lapse here.

 

Linking Earth’s Ice Ages to Ocean Floor topography

Ocean Floor topography/Abyssal Hills (Photo:sciencenews.org)
Ocean Floor topography/Abyssal Hills (Photo:sciencenews.org)

“The evidence comes from seafloor spreading centers: sites throughout the ocean where plates of ocean crust move apart and magma erupts in between, building new crust onto the plates’ trailing edges. Parallel to these spreading centers are “abyssal hills”: long, 100-meter-high ridges on the diverging plates, separated by valleys. On bathymetric maps of seafloor topography, they look like grooves on a record. These grooves, it now turns out, play the tune of Earth’s ice ages.”

Read more on ‘Record grooves’ at Science.

 

 

 

 

 

 

Please follow, share and like us:

Share your thoughts