globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2003008117
论文题名:
The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango; El Salvador
作者: Smith V.C.; Costa A.; Aguirre-Díaz G.; Pedrazzi D.; Scifo A.; Plunkett G.; Poret M.; Tournigand P.-Y.; Miles D.; Dee M.W.; McConnell J.R.; Sunyé-Puchol I.; Harris P.D.; Sigl M.; Pilcher J.R.; Chellman N.; Gutiérrez E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:42
起始页码: 26061
结束页码: 26068
语种: 英语
英文关键词: Eruption dispersal ; Large volcanic eruptions ; Maya ; Radiocarbon ; Sulfate
Scopus关键词: ice ; sulfate ; Antarctica ; Article ; ash ; concentration (parameter) ; El Salvador ; environmental impact ; Greenland ; priority journal ; stratosphere ; volcano
英文摘要: The Tierra Blanca Joven (TBJ) eruption from Ilopango volcano deposited thick ash over much of El Salvador when it was inhabited by the Maya, and rendered all areas within at least 80 km of the volcano uninhabitable for years to decades after the eruption. Nonetheless, the more widespread environmental and climatic impacts of this large eruption are not well known because the eruption magnitude and date are not well constrained. In this multifaceted study we have resolved the date of the eruption to 431 ± 2 CE by identifying the ash layer in a well-dated, highresolution Greenland ice-core record that is >7,000 km from Ilopango; and calculated that between 37 and 82 km3of magma was dispersed from an eruption coignimbrite column that rose to ~45 km by modeling the deposit thickness using state-of-the-art tephra dispersal methods. Sulfate records from an array of ice cores suggest stratospheric injection of 14 ± 2 Tg S associated with the TBJ eruption, exceeding those of the historic eruption of Pinatubo in 1991. Based on these estimates it is likely that the TBJ eruption produced a cooling of around 0.5 °C for a few years after the eruption. The modeled dispersal and higher sulfate concentrations recorded in Antarctic ice cores imply that the cooling would have been more pronounced in the Southern Hemisphere. The new date confirms the eruption occurred within the Early Classic phase when Maya expanded across Central America. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163983
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作者单位: Smith, V.C., Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, Oxford, OX1 3TG, United Kingdom; Costa, A., Sezione di Bologna, Istituto Nazionale di Geofisica e Vulcanologia, Bologna, 40128, Italy; Aguirre-Díaz, G., Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, 76230, Mexico; Pedrazzi, D., Group of Volcanology, Laboratory of Geological Processes Simulation (SIMGEO UB-CSIC), Institute of Earth Sciences Jaume Almera, Lluis Sole i Sabaris s/n, Barcelona, 08028, Spain; Scifo, A., Centre for Isotope Research, University of Groningen, Groningen, 9747 AG, Netherlands; Plunkett, G., Archaeology & Palaeoecology, School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom; Poret, M., Laboratoire Magmas et Volcans, Université Clermont Auvergne, CNRS, Institut de Recherche Pour le Développement, Clermont-Ferrand, 63170, France; Tournigand, P.-Y., Dipartimento di Geoscienze, Università Degli Studi di Padova, Padua, 35131, Italy; Miles, D., Group of Volcanology, Laboratory of Geological Processes Simulation (SIMGEO UB-CSIC), Institute of Earth Sciences Jaume Almera, Lluis Sole i Sabaris s/n, Barcelona, 08028, Spain; Dee, M.W., Centre for Isotope Research, University of Groningen, Groningen, 9747 AG, Netherlands; McConnell, J.R., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Sunyé-Puchol, I., Research Laboratory for Archaeology and the History of Art, School of Archaeology, University of Oxford, Oxford, OX1 3TG, United Kingdom, Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, 76230, Mexico; Harris, P.D., División de Geociencias Aplicadas, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, 78216, Mexico; Sigl, M., Climate and Environmental Physics, Physics & Oeschger Centre for Climate Change Research, University of Bern, Bern, 3012, Switzerland; Pilcher, J.R., Archaeology & Palaeoecology, School of Natural and Built Environment, Queen's University Belfast, Belfast, BT7 1NN, United Kingdom; Chellman, N., Division of Hydrologic Sciences, Desert Research Institute, Reno, NV 89512, United States; Gutiérrez, E., Gerencia de Geología Del Observatorio Ambiental, Ministerio de Medio Ambiente y Recursos Naturales, San Salvador, 76230, El Salvador

Recommended Citation:
Smith V.C.,Costa A.,Aguirre-Díaz G.,et al. The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango; El Salvador[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(42)
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