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Accumulation Reconstruction and Water Isotope Analysis for 1735–1997 of an Ice Core from the Ushkovsky Volcano, Kamchatka, and Their Relationships to North Pacific Climate Records : Volume 9, Issue 2 (17/04/2013)

By Sato, T.

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Book Id: WPLBN0003982257
Format Type: PDF Article :
File Size: Pages 29
Reproduction Date: 2015

Title: Accumulation Reconstruction and Water Isotope Analysis for 1735–1997 of an Ice Core from the Ushkovsky Volcano, Kamchatka, and Their Relationships to North Pacific Climate Records : Volume 9, Issue 2 (17/04/2013)  
Author: Sato, T.
Volume: Vol. 9, Issue 2
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Greve, R., Seddik, H., Shiraiwa, T., Zwinger, T., Edelmann, E., & Sato, T. (2013). Accumulation Reconstruction and Water Isotope Analysis for 1735–1997 of an Ice Core from the Ushkovsky Volcano, Kamchatka, and Their Relationships to North Pacific Climate Records : Volume 9, Issue 2 (17/04/2013). Retrieved from

Description: Institute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo 060–0819, Japan. To investigate past climate change in the Northwest Pacific region, an ice core was retrieved in June 1998 from the Gorshkov crater glacier at the top of the Ushkovsky volcano, in central Kamchatka. Hydrogen isotope (ΔD) analysis and past accumulation reconstructions were conducted to a depth of 140.7 m, dated to 1735. Two accumulation reconstruction methods were applied with the Salamatin and the Elmer/Ice ice flow models. Reconstructed accumulation rates and ΔD were significantly correlated with North Pacific surface temperature. This, and a significant correlation of ΔD with the North Pacific Gyre Oscillation (NPGO) index implies that NPGO data is contained in this record. Wavelet analysis shows that the ice core records have significant multi-decadal power spectra up to the late 19th century. The multi-decadal periods of reconstructed accumulation rates change at around 1850 in the same way as do Northeast Pacific ice core and tree ring records. The loss of multi-decadal scale power spectra of ΔD and the 6‰ increase in its average value occurred around 1880. Thus the core record confirms that the periodicity of precipitation for the entire North Pacific changed between the end of the Little Ice Age through the present due to changes in conditions in the North Pacific Ocean.

Accumulation reconstruction and water isotope analysis for 1735–1997 of an ice core from the Ushkovsky volcano, Kamchatka, and their relationships to North Pacific climate records

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