Roundup: Separating Islands, Research Forum, and Acid Rock Drainage

Franz Josef Islands Separate due to Glacier Retreat

From A Glacier’s Perspective: “Hall and Littrow Island are two islands in the southern part of Franz Josef Land, Russia that have until 2016 been connected by glacier. Sharov et al (2014) generated a map with the MAIRES Project illustrating the glacier connection was failing… The connection between Sonklar Glacier and the neighboring glacier, at the pink arrow, has failed. The lack of sea ice in the region is exposing the marine margins of the ice caps in Franz Josef Land to enhanced melting.  This has and will lead to more coastal changes and island separations.”

Learn more about the separation here.

Hall Island (left) and Littrow Island (right) in 2002 and 2017 Landsat images. The islands are connected by a glacier in 2002 between the black arrows. The blue arrows indicate glacier flow. In 2017, the glacier connection has failed and Nordenskjold Strait has formed (Source: From a Glacier’s Perspective/AGU 100 Blogosphere).

 

Scientists Create Glacier Research Forum in Pakistan

From The Express Tribune: “Scientists have resolved to set up a forum which would consolidate all research studies from different institutions on glaciers in the mountainous ranges in Pakistan… “It will be a national platform for glacier research… We want to integrate their [different institutions’] studies to avoid duplications and to consolidate research work of all Pakistani institutions,” PMD Director-General, Dr. Ghulam Rasul explained to The Express Tribune.”

Learn more about this initiative here.

Baltoro Glacier in Pakistan (Source: Thsulemani/Wikimedia).

 

Acid Rock Drainage in Nevado Pastoruri Glacier Area in Peru

From Environmental Science and Pollution Research: “The generation of acid rock drainage (ARD) was observed in an area of Nevado Pastoruri as a result of the oxidative dissolution of pyrite-rich lutites and sandstones. These ARDs are generated as abundant pyrite becomes exposed to atmospheric conditions as a result of glacier retreat. The proglacial zone contains lagoons, springs, streams and wetlands, scant vegetation, and intense fluvioglacial erosion. This work reports a comprehensive identification and the results of sampling of the lagoons and springs belonging to the microbasin, which is the headwaters of the Pachacoto River, as well as mapping results based on the hydrochemical data obtained in our study.”

Read the full study here.

Evidence of melting at Pastoruri glacier in Northern Peru (Source: Inyucho/Creative Commons).

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