Through the Greenland Ice Stream

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Рұқсат жабық Рұқсат ақылы немесе тек жазылушылар үшін

Аннотация

Glaciers and ice sheets store over two-thirds of Earth’s freshwater and are presently greatly contributing to rising sea levels. The main discharge from the Antarctic and Greenland ice sheets is drained through fast-moving ice streams and outlet glaciers. Understanding the behavior of these ice masses, including why a huge mass of ice moves at such high speeds, is essential to predicting their future evolution and future sea-level rises. A deep drilling project at the upper part of the largest ice stream in Greenland, Northeast Greenland Ice Stream, was started in 2015, with the main objective of studying the dynamics of ice flow in an ice stream via ice rheology and deformation studies of the ice core and via borehole observations of basal sliding and borehole deformation. Recently, this borehole reached as deep as 2122.4 m, and the drilling process was often not in the routine mode. The project Steering Committee has decided to cancel the 2020 season in light of the global Coronavirus situation. Drilling to the bedrock at the target depth of ~2550 m is planned for the next one or two field seasons.

Авторлар туралы

PG. Talalay

Polar Research Center, Institute for Polar Science and Engineering, Jilin University

Email: ptalalay@yahoo.com
Changchun, China

D. Dahl-Jensen

Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen

Email: ddj@nbi.ku.dk
Copenhagen, Denmark

S. Hansen

Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen

Email: sbh@nbi.dk
Copenhagen, Denmark

T. Popp

Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen

Email: trevor@nbi.ku.dk
Copenhagen, Denmark

J. PSteffensen

Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen

Email: jps@nbi.ku.dk
Copenhagen, Denmark

K. Nielsen

Physics of Ice Climate and Earth, Niels Bohr Institute, University of Copenhagen

Email: karl.emil.nielsen@nbi.ku.dk
Copenhagen, Denmark

N. Zhang

Polar Research Center, Institute for Polar Science and Engineering, Jilin University

Email: znan@jlu.edu.cn
Changchun, China

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