This video clip shows ice core sampling performed using the RIKEN Ice Core Laser Melting Sampler (RIKEN-LMS). The RIKEN-LMS is the world's first device that can collect water samples from ice cores using a laser to locally melt tiny amounts of ice. This allows researchers to take samples at 3 times the currently available depth-resolution. Changes in temperature that occurred thousands to hundreds of thousands of years ago, which are recorded in the layers of the ice core, can now be analyzed on a much finer time-scale. In this study, 51 samples were taken at 3-mm intervals (at increasing ice-core depths) from a section of ice cut from the Dome Fuji DFS10 shallow ice core, which itself came from about 90 meters beneath the surface of a glacier in East Antarctica. The core was placed horizontally in the sampler, and oxygen and hydrogen isotopes from each sample of meltwater were analyzed to determine changes in temperature over time.
Further reading:
Press release:
The research paper in Journal of Glaciology: doi.org/10.101...
Негізгі бет First ice core sampling using the new RIKEN-LMS system
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