气候变化领域集成服务门户(CCPortal): The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango; El Salvador

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DOI	10.1073/pnas.2003008117
	The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango; El Salvador
	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.
发表日期	2020
ISSN	0027-8424
起始页码	26061
结束页码	26068
卷号	117 期号:42
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.
英文关键词	Eruption dispersal; Large volcanic eruptions; Maya; Radiocarbon; Sulfate
语种	英语
scopus关键词	ice; sulfate; Antarctica; Article; ash; concentration (parameter); El Salvador; environmental impact; Greenland; priority journal; stratosphere; volcano
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160757
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 St...
推荐引用方式 GB/T 7714	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],2020,117(42).
APA	Smith V.C..,Costa A..,Aguirre-Díaz G..,Pedrazzi D..,Scifo A..,...&Gutiérrez E..(2020).The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango; El Salvador.Proceedings of the National Academy of Sciences of the United States of America,117(42).
MLA	Smith V.C.,et al."The magnitude and impact of the 431 CE Tierra Blanca Joven eruption of Ilopango; El Salvador".Proceedings of the National Academy of Sciences of the United States of America 117.42(2020).