Space Technology 5

[LSSE12-02(Invited)] First application of laser melting method to ice core sampling to study climate change

*Yuko Motizuki¹, Yoichi Nakai¹, Kazuya Takahashi¹, Junya Hirose¹, Yu Vin Sahoo¹, Masaki Yumoto^2,3, Masayuki Maruyama², Michio Sakashita², Kiwamu Kase², Satoshi Wada², Hideaki Motoyama⁴, Yasushige Yano¹ (1. Astro-Glaciology Laboratory, RIKEN Nishina Center, 2. Photonics Control Technology Team, RIKEN Center for Advanced Photonics, 3. Innovative Laser Processing Group, National Institute of Advanced Industrial Science and Technology, 4. National Institute of Polar Research)

We developed a novel Laser Melting Sampler (LMS) for ice cores to measure the stable water isotope ratios (δ18O and δD) as temperature proxies of the past. A segment of an Antarctic ice core, using the LMS, was demonstrated to have been discretely sampled with a depth resolution as small as 3 mm. In this talk, we will deliver the key and merit of using laser melting in ice core science.

Reference:
Motizuki Y, et al. Journal of Glaciology. 2023:1-7. doi:10.1017/jog.2023.52