Hydroclimate variability from western Iberia (Portugal) during the Holocene
Insights from a composite stalagmite isotope record
Dados Bibliográficos
| ID | 12265742 |
|---|---|
| Autores | Diana L Thatcher (0000-0002-1451-8113, Iowa State University, autor correspondente), Alan D Wanamaker (0000-0002-6560-6420, Iowa State University), Rhawn F Denniston (0000-0002-6346-1221, Cornell College), Yemane Asmerom (0000-0003-3440-1294, University of New Mexico), Victor J Polyak (0000-0002-2010-1066, University of New Mexico), Daniel Fullick (Iowa State University), Caroline C Ummenhofer (0000-0002-9163-3967, Woods Hole Oceanographic Institution), David P Gillikin (0000-0003-1351-8418, Union College), Jonathan Haws (0000-0002-2047-4524, University of Louisville) |
| Ano | 2020 |
| Volume | 30 |
| Fascículo | 7 |
| Páginas | 966-981 |
| Data de publicação | 2020-03-07 |
| Peer Reviewed | Sim |
| Open Access | Sim |
| Tipo | ARTICLE |
| Periódico | The Holocene (JOURNAL) |
| Identificadores do periódico | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Editora | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683620908648 |
| OpenAlex | W3010567323 |
| Idioma | EN |
| Citações recebidas | 5 |
| Referências citadas | 115 |
Iberia is predicted under future warming scenarios to be increasingly impacted by drought. While it is known that this region has experienced multiple intervals of enhanced aridity over the Holocene, additional hydroclimate-sensitive records from Iberia are necessary to place current and future drying into a broader perspective. Toward that end, we present a multi-proxy composite record from six well-dated and overlapping speleothems from Buraca Gloriosa (BG) cave, located in western Portugal. The coherence between the six stalagmites in this composite stalagmite record illustrates that climate (not in-cave processes) impacts speleothem isotopic values. This record provides the first high-resolution, precisely dated, terrestrial record of Holocene hydroclimate from west-central Iberia. The BG record reveals that aridity in western Portugal increased secularly from 9.0 ka BP to present, as evidenced by rising values of both carbon (δ 13 C) and oxygen (δ 18 O) stable isotope values. This trend tracks the decrease in Northern Hemisphere summer insolation and parallels Iberian margin sea surface temperatures (SST). The increased aridity over the Holocene is consistent with changes in Hadley Circulation and a southward migration of the Intertropical Convergence Zone (ITCZ). Centennial-scale shifts in hydroclimate are coincident with changes in total solar irradiance (TSI) after 4 ka BP. Several major drying events are evident, the most prominent of which was centered around 4.2 ka BP, a feature also noted in other Iberian climate records and coinciding with well-documented regional cultural shifts. Substantially, wetter conditions occurred from 0.8 ka BP to 0.15 ka BP, including much of the ‘Little Ice Age’. This was followed by increasing aridity toward present day. This composite stalagmite proxy record complements oceanic records from coastal Iberia, lacustrine records from inland Iberia, and speleothem records from both northern and southern Spain and depicts the spatial and temporal variability in hydroclimate in Iberia
Archaeology · Cave · Climate change · Climatology · Geography · Holocene · Ice core · Intertropical Convergence Zone · Northern Hemisphere · Paleoclimatology · Physical geography · Pluvial · Precipitation · Speleothem · Stable isotope ratio · Stalagmite · Westerlies · δ18O · Geological and Geophysical Studies Worldwide · Geology and Paleoclimatology Research · Karst Systems and Hydrogeology · Geology · Oceanography
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Holocene hydrological changes in Europe and the role of the North Atlantic ocean circulation from a speleothem perspective
Potential responses and resilience of Late Chalcolithic and Early Bronze Age societies to mid-to Late Holocene climate change on the southern Iberian Peninsula
Holocene hydroclimate changes in continental Croatia recorded in speleothem δ 13 C and δ 18 O from Nova Grgosova Cave
Environmental change in SW Portugal during the last 3900 years BP
Paleoclimate and growth rates of speleothems in the northwestern Iberian Peninsula over the last two glacial cycles
New speleothem data from Molinos and Ejulve caves reveal Holocene hydrological variability in northeast Iberia
Holocene Forcing of the Indian Monsoon Recorded in a Stalagmite from Southern Oman
Holocene ITCZ and Indian monsoon dynamics recorded in stalagmites from Oman and Yemen (Socotra)
Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly
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Improvements in 230Th dating, 230Th and 234U half-life values, and U–Th isotopic measurements by multi-collector inductively coupled plasma mass spectrometry
Insolation values for the climate of the last 10 million years
Migrations and dynamics of the intertropical convergence zone
Climate change projections for the Mediterranean region
Contrasting impacts of Dansgaard–Oeschger events over a western European latitudinal transect modulated by orbital parameters
Southward Migration of the Intertropical Convergence Zone Through the Holocene
Continental-scale temperature variability during the past two millennia
The Twentieth Century Reanalysis Project
Structure and origin of Holocene cold events
Holocene climate variability
Equilibrium and nonequilibrium oxygen isotope effects in synthetic carbonates
Decadal Trends in the North Atlantic Oscillation
The Holocene Asian Monsoon
Years of Cosmic Radiation and Solar Activity From Ice Cores and Tree Rings
Formal subdivision of the Holocene Series/Epoch
The 4.2 ka BP Event in the Mediterranean region
Mid- to Late Holocene climate change
The Genesis and Collapse of Third Millennium North Mesopotamian Civilization
Holocene circum-Mediterranean vegetation changes
Land–sea climatic variability in the eastern North Atlantic subtropical region over the last 14,200 years
A severe centennial-scale drought in midcontinental North America 4200 years ago and apparent global linkages
Palynological evidence for environmental and climatic change in the lower Guadiana valley, Portugal, during the last 13 000 years
Mid-Holocene vegetation history of the central Mediterranean
Short contribution
| Obras citantes distintas | 5 |
|---|---|
| Citações por ano | 1 |
| Intervalo de citações | 2021 - 2026 (6) |
| Velocidade de citação | current |
| Altamente citado | Não |
| Tipos de citação | Neutras: 5 |