VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA
Abstract: Two closely-spaced peaks of electrical conductivity were foundat depths between 45 and 50 m of the 120-m long ice core drilled at site H15 in Antarctica by the 32nd Japanese Antarctic Research Expedition in 1991. Chemical analysis of the core containing these peaks revealed that the ice la...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.539.5783 2023-05-15T13:32:25+02:00 VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA Mika Kohno Takaaki Fukuoka Yoshiyuki Fujii The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.5783 http://www.misasa.okayama-u.ac.jp/techreport/kohno.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.5783 http://www.misasa.okayama-u.ac.jp/techreport/kohno.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.misasa.okayama-u.ac.jp/techreport/kohno.pdf text ftciteseerx 2016-01-08T10:58:11Z Abstract: Two closely-spaced peaks of electrical conductivity were foundat depths between 45 and 50 m of the 120-m long ice core drilled at site H15 in Antarctica by the 32nd Japanese Antarctic Research Expedition in 1991. Chemical analysis of the core containing these peaks revealed that the ice layers were characterized by high acidity and high sulfate concentration suggesting volcanic signals. In order to identify these characteristics, the core was dated using two methods: (1) counting the number of high electrical conductivity peaks resulting from seasonal variations of SO42- nd NO3-, and (2) an empirical model of firn densification. The dating results suggest that the high conductivity is related to deposition of acidic aerosols from the volcanic eruptions of Tambora in 1815 A. D. and of an unknown volcano in 1809 A. D. 1. Text Antarc* Antarctic Antarctica East Antarctica ice core Unknown Antarctic East Antarctica Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Plateau ENVELOPE(40.000,40.000,-73.000,-73.000) |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Abstract: Two closely-spaced peaks of electrical conductivity were foundat depths between 45 and 50 m of the 120-m long ice core drilled at site H15 in Antarctica by the 32nd Japanese Antarctic Research Expedition in 1991. Chemical analysis of the core containing these peaks revealed that the ice layers were characterized by high acidity and high sulfate concentration suggesting volcanic signals. In order to identify these characteristics, the core was dated using two methods: (1) counting the number of high electrical conductivity peaks resulting from seasonal variations of SO42- nd NO3-, and (2) an empirical model of firn densification. The dating results suggest that the high conductivity is related to deposition of acidic aerosols from the volcanic eruptions of Tambora in 1815 A. D. and of an unknown volcano in 1809 A. D. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mika Kohno Takaaki Fukuoka Yoshiyuki Fujii |
spellingShingle |
Mika Kohno Takaaki Fukuoka Yoshiyuki Fujii VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA |
author_facet |
Mika Kohno Takaaki Fukuoka Yoshiyuki Fujii |
author_sort |
Mika Kohno |
title |
VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA |
title_short |
VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA |
title_full |
VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA |
title_fullStr |
VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA |
title_full_unstemmed |
VOLCANIC RECORDS AND DATING OF AN UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA |
title_sort |
volcanic records and dating of an upper half of the h15 ice core from mizuho plateau, east antarctica |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.5783 http://www.misasa.okayama-u.ac.jp/techreport/kohno.pdf |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(40.000,40.000,-73.000,-73.000) |
geographic |
Antarctic East Antarctica Mizuho Mizuho Plateau |
geographic_facet |
Antarctic East Antarctica Mizuho Mizuho Plateau |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core |
op_source |
http://www.misasa.okayama-u.ac.jp/techreport/kohno.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.539.5783 http://www.misasa.okayama-u.ac.jp/techreport/kohno.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766026858579623936 |