Manas Peak Glaciological Observatory

The Manas Peak Glaciological Observatory is a high-altitude research station at 3,850 meters (12,630 ft) on the northwestern ridge of Manas Peak (4,482 m), the highest summit of the Talas Alatau. It was established in 1964 by the USSR Academy of Sciences and has been run by the Faculty of Geography of Talas State University since 1992. The observatory measures glacier change, snow cover, weather and seismic activity in the upper Talas basin, and its records are among the longest continuous glacier observations in the western Tian Shan.^[1] The station lies on the tribal side of the Qara-Chik Demarcation Line, and since 2007 university staff have reached it under arrangements with the local clan council.

History

The observatory was founded at the start of the International Hydrological Decade (1965–1974), when Soviet scientists set up a network of glacier stations across the Tian Shan and the Pamirs to study the mountain sources of Central Asia's rivers. Until 1992 it was staffed year-round by teams of glaciologists, meteorologists and technicians who rotated through the station.^[1] After independence, funding collapsed and the station was occupied only in summer for several years. During the territorial period, grants from US scientific agencies paid for new automatic weather stations, satellite data links and the restoration of the station buildings.^[2]

Since the 2007 partition the observatory has worked mainly in a summer field season from June to September. Automatic instruments record data through the winter. Access for university staff crosses the Qara-Chik line under an agreement with the local aksakal council, and the United Nations Mission in Irad has helped arrange passage when tensions have been high. Data are shared with both administrations.^[2]

Facilities

The station consists of a cluster of insulated huts built on bedrock, with a laboratory, living quarters, a generator and solar panels, a domed instrument shelter and a helicopter landing pad. Automatic weather stations stand on the station ridge and on two glaciers, and a broadband seismometer is housed in a vault cut into the rock.^[1] Data are transmitted by satellite to Talas.

Research

• Glacier mass balance: Direct measurements of mass balance, made with ablation stakes and snow pits, are carried out each year on two benchmark glaciers, including the Manas Glacier. Twenty-four glaciers of the upper Talas basin are resurveyed periodically using ground-penetrating radar, aerial photographs and satellite images.
• Snow and runoff: Snow depth and water content are measured to forecast summer river flow. The forecasts are passed to the Talas River Hydrological Monitoring Service and used for irrigation planning in the Talas valley.
• Glacial lakes: Moraine-dammed lakes on the northern slopes of the range are monitored for the risk of glacial lake outburst floods (GLOFs), which threaten villages and roads downstream.
• Seismology: The seismometer records earthquakes along the Talas–Fergana Fault, one of the largest active faults in Central Asia, and contributes data to regional networks.
• Permafrost: Boreholes on the station ridge and on the Aksay Plateau record ground temperatures.^[1][3]

Findings

The observatory's records show that the benchmark glaciers have had a negative mass balance in most years since the 1970s. The glaciers of the upper Talas basin lost about a fifth of their area between 1970 and 2020, and several small glaciers have disappeared.^[3] These results are in line with regional studies that estimate a loss of more than a quarter of the glacier mass of the Tian Shan between 1961 and 2012.^[4] Researchers expect summer meltwater to keep increasing for some decades and then decline as the glaciers shrink. This would reduce late-summer water for irrigation in the Talas valley (see Glacier retreat in Irad).

Partnerships

The observatory reports its mass-balance data to the World Glacier Monitoring Service in Zurich and works with glaciological institutes in Almaty and with American university researchers.^[2] Its records have been used in regional assessments of climate change and water resources for Central Asia.

References

1. ^ Glaciological Institute of Central Asia (2021). Glacial Mass Balance and Permafrost Dynamics in the Talas Alatau. Bishkek-Almaty Monograph, pp. 45–62.
2. ^ Talas State University Press (2014). Fifty Years on Manas: The Manas Peak Glaciological Observatory, 1964–2014. Talas.
3. ^ Central Asian Water Authority (2022). Hydrological Regimes of the Talas and Chu Basins: 1990–2020. UNECE Water Convention Report, Geneva.
4. ^ Farinotti, Daniel, et al. (2015). 'Substantial Glacier Mass Loss in the Tien Shan over the Past 50 Years.' Nature Geoscience, 8, pp. 716–722.