Synchronization of the NGRIP, GRIP, and GISP2 ice cores ...

• Main Authors: Rasmussen, Sune Olander, Seierstad, Inger K, Andersen, Katrine K, Bigler, Matthias, Dahl-Jensen, Dorthe, Johnsen, Sigfús Jóhann
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: Greenland Ice Core Projects GRIP/GISP/NGRIP; Greenland; Rasmussen; GISP; Greenland ice core; GRIP; ice core; NGRIP
• Online Access: https://dx.doi.org/10.1594/pangaea.786240; https://doi.pangaea.de/10.1594/PANGAEA.786240

We here present a synchronization of the NGRIP, GRIP, and GISP2 ice cores based mainly on volcanic events over the period 14.9-32.45 ka b2k (before AD 2000), corresponding to Marine Isotope Stage 2 (MIS 2) and the end of MIS 3. The matching provides a basis for applying the recent NGRIP-based Greenland Ice Core Chronology 2005 (GICC05) time scale to the GRIP and GISP2 ice cores, thereby making it possible to compare the synchronized palaeoclimate profiles of the cores in detail and to identify relative accumulation differences between the cores. Based on the matching, a period of anomalous high accumulation rates in the GISP2 ice core is detected within the period 16.5-18.3 ka b2k. The d18O and [Ca2+] profiles of the three cores are presented on the common GICC05 time scale and generally show excellent agreement across the stadial-interstadial transitions and across the two characteristic dust events in Greenland Stadial 3. However, large differences between the d18O and [Ca2+] profiles of the three cores ... : Supplement to: Rasmussen, Sune Olander; Seierstad, Inger K; Andersen, Katrine K; Bigler, Matthias; Dahl-Jensen, Dorthe; Johnsen, Sigfús Jóhann (2008): Synchronization of the NGRIP, GRIP, and GISP2 ice cores across MIS 2 and palaeoclimatic implications. Quaternary Science Reviews, 27(1-2), 18-28 ...