Multi-proxy dating of Iceland's major pre-settlement Katla eruption to 822-823 CE

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F17%3A00477964" target="_blank" >RIV/86652079:_____/17:00477964 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/17:00113759

Result on the web

<a href="http://dx.doi.org/10.1130/G39269.1" target="_blank" >http://dx.doi.org/10.1130/G39269.1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1130/G39269.1" target="_blank" >10.1130/G39269.1</a>

Result language

angličtina

Original language name

Multi-proxy dating of Iceland's major pre-settlement Katla eruption to 822-823 CE

Original language description

Investigations of the impacts of past volcanic eruptions on climate, environment, and society require accurate chronologies. However, eruptions that are not recorded in historical documents can seldom be dated exactly. Here we use annually resolved radiocarbon (C-14) measurements to isolate the 775 CE cosmogenic C-14 peak in a subfossil birch tree that was buried by a glacial outburst flood in southern Iceland. We employ this absolute time marker to date a subglacial eruption of Katla volcano at late 822 CE to early 823 CE. We argue for correlation between the 822-823 CE eruption and a conspicuous sulfur anomaly evident in Greenland ice cores, which follows in the wake of an even larger volcanic signal (ca. 818-820 CE) as yet not attributed to a known eruption. An abrupt summer cooling in 824 CE, evident in tree-ring reconstructions for Fennoscandia and the Northern Hemisphere, suggests a climatic response to the Katla eruption. Written historical sources from Europe and China corroborate our proposed tree ring-radiocarbon-ice core linkage but also point to combined effects of eruptions occurring during this period. Our study describes the oldest precisely dated, high-latitude eruption and reveals the impact of an extended phase of volcanic forcing in the early 9th century. It also provides insight into the existence of prehistoric woodland cover and the nature of volcanism several decades before Iceland's permanent settlement began.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/LO1415" target="_blank" >LO1415: CzechGlobe 2020 – Development of the Centre of Global Climate Change Impacts Studies</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geology

ISSN

0091-7613

e-ISSN

—

Volume of the periodical

45

Issue of the periodical within the volume

9

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

783-786

UT code for WoS article

000408588700006

EID of the result in the Scopus database

2-s2.0-85024892809