The duration of the Bølling–Allerød period (Greenland Interstadial 1) in the GRIP ice core
Abstract:A new dating of the Bølling–Allerød period (Greenland Interstadial event 1) in the GRIP ice core is presented. Newly measured profiles of D and 18O, as well as existing profiles of Ca2+, NH4+, dust and NO3−, have been used for the dating. As seasonal variations can be observed in all six components, it was possible to simultaneously count annual layers in the profiles in order to obtain a multi-parameter dating. The new data presented in this study include a total of 36.85 m of stable-isotope profiles of 1 cm resolution from five sections of the Bølling–Allerød period in the GRIP ice core. The annual-layer counting suggests a duration of the complete Bølling–Allerød period, as revealed in the GRIP ice core, of 1627 ± 52 years. This estimate contrasts with an earlier finding from the same GRIP ice core, where the Bølling–Allerød was found to span 2168 years (Hammer, in press). This estimate was based on layer counting, using dust concentrations only.
Document Type: Research Article
Publication date: 2005-08-01
- The Annals of Glaciology is a peer-reviewed, thematic journal published 2 to 4 times a year by the International Glaciological Society (IGS). Publication frequency is determined and volume/issue numbers assigned by the IGS Council on a year-to-year basis and with a lead time of 3 to 4 years. The Annals of Glaciology is included in the ISI Science Citation Index from volume 50, number 50 onwards.
Themes can be on any aspect of the study of snow and ice. Individual members can make a suggestion for a theme for an Annals issue to the Secretary General, who will forward it to the IGS Publications Committee. The IGS Publication Committee will make a recommendation for an individual themed Annals issue, together with a potential Annals Chief Editor for that issue, to IGS Council. The IGS Council will make the decision whether to proceed, taking into account the spread of topics and the overall capacity for publication of pages in Annals.
- Editorial Board
- Information for Authors
- Ingenta Connect is not responsible for the content or availability of external websites