High-resolution stable water isotope composition of firn cores OH-7, OH-11 and LP-01 from the northern Antarctic Peninsula ...

• Main Authors: Hoffmann-Abdi, Kirstin, Meyer, Hanno, Fernandoy, Francisco, Freitag, Johannes, Shaw, Fyntan M, Werner, Martin, Thomas, Elizabeth R, McConnell, Joseph R, Weiner, Mikaela, Schneider, Christoph
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2023
• Subjects: Antarctic Peninsula; Firn chemistry; firn core; proxies; stable water isotopes; Alfred Wegener Institute; Antarc*; Antarctic; Ice cap; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.961100; https://doi.pangaea.de/10.1594/PANGAEA.961100

Firn cores OH-7 and OH-11 were retrieved from Plateau Laclavere, a small ice cap on the northernmost end of the Antarctic Peninsula, at about 1130 m above sea level (a.s.l.). OH-7 was drilled in January 2014 to a depth of 15.31 m using a mechanical 9 cm diameter drilling device (Rufli auger). OH-11 was drilled in January 2015 to a depth of 20.44 m. Firn core LP-01 was recovered from Plateau Louis Phillipe, which is located approximately 40 km south of Plateau Laclavere, at about 1390 m a.s.l. The core was drilled in January 2016 to a depth of 21.38 m. Cores OH-11 and LP-01 were obtained using a portable solar-powered and electrically operated ice-core drill (Backpack Drill; icedrill.ch AG). Subsamples for stable water isotope analysis were obtained from the three cores at 5 cm resolution. Stable water isotope measurements of OH-7 and LP-01 were performed at the ISOLAB Stable Isotope Facility of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) in Potsdam, Germany, in summer ...