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China - Team drilled a 170 meter hole through the Animaqing glacier accumulation area - Sanjiangyuan Region of Qinghai Province - November 3, 2020

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  • China - Team drilled a 170 meter hole through the Animaqing glacier accumulation area - Sanjiangyuan Region of Qinghai Province - November 3, 2020



    2020-11-03 17:41:19Beijing News




    Successfully drilled 170 meters of high-quality ice core! Significant progress has been made in the scientific investigation of the glaciers of the Three Rivers Source in Qinghai



    Beijing News Express According to the official website of the Qinghai Provincial Department of Science and Technology, recently, the Sanjiangyuan Glacier Scientific Expedition Team has made significant progress in the comprehensive scientific investigation and ice core drilling work carried out by the Animaqing Glacier in the Sanjiangyuan Region of Qinghai Province. Carrying forward the spirit of the Qinghai-Tibet scientific research and overcoming severe altitude sickness, we successfully drilled a high-quality mountain through-bottom ice core with a total length of 170 meters at a drilling point nearly 6000 meters above sea level at the top of the glacier accumulation area.

    Academician Yao Tandong, the leader of the second Qinghai-Tibet scientific expedition team, said that glaciers are an important part of the Earth's cryosphere system. The Qinghai-Tibet Plateau is the most widely distributed area of ​​the world except for the North and South Pole. As one of the most important research carriers for recording global changes with high resolution, ice core is not only an information carrier of natural changes in the climate and environment in the past, but also an environmental archive of the impact of past human activities on the climate and environment. It can record different time scales with high resolution. Regional and even global climate and environmental changes. The Three-River Source region is rich in ecological resources such as snow-capped mountains and glaciers, lake wetlands, etc. It has a very unique position in the scientific research of the glacier-lake natural ecosystem. It is an ideal base for field observation and scientific research of glaciers and lakes.

    The second Qinghai-Tibet scientific expedition is a major national scientific and technological task. This scientific expedition has also received strong support and assistance from the Qinghai Provincial Government and relevant departments, and has achieved some important scientific breakthroughs. In the next step, we will focus on the ecology of the Qinghai-Tibet Plateau. Conservation and Construction Strengthen exchanges and cooperation with relevant scientific research departments and local governments of Qinghai Province, optimize the ecological security barrier system around the environmental change mechanism of the Qinghai-Tibet Plateau, and provide scientific and technological support for building a beautiful Qinghai-Tibet Plateau and promoting local green development.

    According to the Sanjiangyuan Glacier Scientific Research Team, the Animaqin area where ice core drilling is carried out this time is an area where glaciers are concentrated in the source area of ​​the Yellow River. Glaciers are widely developed here. Obtaining through-bottom ice cores is useful for understanding the synergy of past westerly monsoons. The evolution of the eco-climatic environment in the source region of the Lower Yellow River is of great significance. The high-quality mountain through-bottom ice cores obtained this time provide accurate scientific information for the study of climate and environmental changes with seasonal to interannual resolutions in the region over the past few thousand years. Through the study of changes in the Animaqing glacier mass balance, Assessing the response of glaciers to climate change and the current status of glacier water resources and ecological environment in the Three Rivers Source Region of our province is of great significance. At the same time, according to the current scientific research progress, the surface elevation of the typical large glaciers such as Vigeledamxung Glacier, Halong Glacier, Yehelong Glacier in the source area of ​​the Yellow River has decreased overall, and the glaciers are generally in a state of retreat, especially Vig There is a wet-grained snow aquifer at a depth of 26m in the surface layer of the Letangxung glacier accumulation area, and the ice temperature inside the glacier in this part is close to zero. Therefore, under the general trend of global warming, the ice cores successfully drilled this time will become valuable scientific data for the historical evolution of the natural environment of the Qinghai-Tibet Plateau, especially the Three Rivers Source Region.



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