Oldest Dryas hydroclimate reorganization in the eastern Iberian Peninsula after the iceberg discharges of Heinrich Event 1
Bibliographic Data
| ID | 24087895 |
|---|---|
| Authors | Carlos Pérez‐mejía (0000-0002-8370-9271, Xi'an Jiaotong University, corresponding author), Ana Moreno (0000-0001-7357-584X, Instituto Pirenaico de Ecología), Juan Bernal-Wormull, Juan Luis Bernal-Wormull (0000-0003-2086-3527, Instituto Pirenaico de Ecología), Isabel Cacho (0000-0002-6512-0770, Universitat de Barcelona), María Cinta Osácar (0000-0002-5246-366X, Universidad de Zaragoza), R Lawrence Edwards (0000-0002-7027-5881, University of Minnesota), Hai Cheng (0000-0002-5305-9458, Chinese Academy of Sciences) |
| Year | 2021 |
| Volume | 101 |
| Pages | 67-83 |
| Publication date | 2021-05-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Quaternary Research (JOURNAL) |
| Journal identifiers | ISSN: 0033-5894 • E-ISSN: 1096-0287 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/qua.2020.112 |
| OpenAlex | W3118732666 |
| Language | EN |
| Citations received | 1 |
| References cited | 133 |
This study examines the first precisely dated and temporally highly resolved speleothem record from Iberia that reconstructs the Oldest Dryas (OD). The onset of cold conditions in the study area, contemporary with the beginning of Heinrich Stadial 1, is recorded at 18.13 ± 0.08 ka, with a pronounced drop of 6.1‰ in δ 13 C in 250 years. Henceforth, stadial conditions depict a period of instability in the Atlantic Meridional Overturning Circulation, peaking in freshwater input from iceberg melting during Heinrich Event 1. Anomalies in the δ 18 O of the stalagmite attributed to such a freshwater event are found from 16.17 to 15.89 ka. Such absolute dates given to the onset of the OD in Iberia and to the main iceberg discharges are reliable anchor points for non-absolute chronologies. Two periods are identified in the OD: OD-a (18.13–16.17 ka) is characterized by wet conditions and a faster growth rate, and OD-b (15.89–14.81 ka) exhibits relative dryness and a slower growth rate. The sudden release of fresh water is considered to be the reason for the disruption of rainfall patterns in eastern Iberia. The present study also highlights the existence of heterogeneous and complex hydrological conditions during the OD in Iberia when both Atlantic and Mediterranean realms are considered.
Allerød oscillation · Archaeology · Cave · Climatology · Geography · Holocene · Ice sheet · Iceberg · Peninsula · Period (music) · Speleothem · Stadial · Stalagmite · Younger Dryas · Archaeological and Geological Studies · Geological and Geophysical Studies Worldwide · Geology · Geology and Paleoclimatology Research · Oceanography
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| Unique citing works | 1 |
|---|---|
| Citations per year | 0,2 |
| Citation span | 2021 - 2021 (1) |
| Citation velocity | historical |
| Highly cited | No |