Li Zhongqin, a scientist who heads the Tianshan Mountains Glaciological Station of the Chinese Academy of Sciences, makes a seasonal hike toward the top of a glacier in the Tianshan mountains at the end of every summer to measure the thinning of the glacier, reports NPR. “We come up here each month to check it, to see how fast the glacier’s melt. Each year, the glacier is 15 feet thinner,” Zhongqin told Morning Edition’s Rob Schmitz.
Though the government has banned tourism on the glaciers in an effort to reduce the impact of pollution, global carbon emissions are a bigger threat. The melting glaciers are a big problem because not only are the glaciers the source of water for millions of people, but they also impact agriculture in drier areas like the city of Turpan that sits on the edge of Taklamakan Desert. Though dry, the region is an agriculture powerhouse which depends on the water arriving through meltwaters that flow through thousands of miles of underground tunnels called karez, an ancient irrigation system, now slowly drying up.
GlacierHub recently reported on the severity of drought in Xinjiang, and it’s uncertain future. This Photo Friday view photos of the slowly disappearing glaciers. Read more here.
Emerging from Glacier Permafrost: New Purple Bacteria found in Tianshan
From International Journal of Systematic and Evolutionary Microbiology: “A Gram-stain-negative, motile and rod-shaped bacterium, designated strain B2T, which can synthesize purple pigments of violacein and dexyoviolacein, was isolated from Tianshan glacier in Xinjiang, China…. Based on genomic relatedness, physiological, biochemical and chemotaxonomic data, strain B2T […] is considered to represent a novel species.”
Understanding GLOF Dynamics in Arid Andes of Chile
From Natural Hazards: “We study a remarkable GLOF triggered by the failure of a subglacial lake in the Manflas Valley, Arid Andes of Chile, in 1985 providing insights into the lake’s origin, clarifying the failure mechanism and modeling the GLOF event-related dynamics… We show that the failed lake (4 × 106 m3) formed in a low-slope (≤ 10°) area and that extreme (≥ 90th percentile) annual precipitation before the GLOF contributed to the lake filling and probably to the dam collapse.”
Check out more about what scientists have learned from the 1985 GLOF event here.
Exploring the Factors Behind Flow Rates in Greenland’s Exit Glaciers
From Science: “The largest uncertainty in ice sheet models used to predict future sea-level rise originates from our limited understanding of processes at the ice-bed interface… We find that this sliding relation does not apply to the 140 Greenland glaciers that we analyzed.”