An improved north–south synchronization of ice core records around the 41 kyr <sup>10</sup>Be peak

Grant M. Raisbeck; Alexandre Cauquoin; Jean Jouzel; Amaelle Landais; Jean-robert Petit; Vladimir Y. Lipenkov; Juerg Beer; Hans-arno Synal; Hans Oerter; Sigfus J. Johnsen; Jorgen P. Steffensen; Anders Svensson; Françoise Yiou

doi:10.5194/cp-13-217-2017

An improved north–south synchronization of ice core records around the 41 kyr <sup>10</sup>Be peak

Grant M. Raisbeck, Alexandre Cauquoin, Jean Jouzel, Amaelle Landais, Jean-robert Petit, Vladimir Y. Lipenkov, Juerg Beer, Hans-arno Synal, Hans Oerter, Sigfus J. Johnsen, Jorgen P. Steffensen, Anders Svensson, Françoise Yiou

Is-, Klima- og Geofysik

16 Citationer (Scopus)

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Abstract

Using new high-resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic excursion ĝ1/4 ĝ€41ĝ€kyr ago. We estimate the precision of this synchronization to be ±20 years, an order of magnitude better than previous work. We discuss the implications of this new synchronization for making improved estimates of the depth difference between ice and enclosed gas of the same age (Î"depth), difference between age of ice and enclosed gas at the same depth (Î"age) in the EDC and EDML ice cores, spectral properties of the 10Be profiles and phasing between Dansgaard-Oeschger-10 (in NGRIP) and AIM-10 (in EDML and EDC).

Originalsprog	Engelsk
Tidsskrift	Climate of the Past
Vol/bind	13
Udgave nummer	3
Sider (fra-til)	217-229
ISSN	1814-9324
DOI	https://doi.org/10.5194/cp-13-217-2017
Status	Udgivet - 10 mar. 2017

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10.5194/cp-13-217-2017Licens: CC BY

cp-13-217-2017Forlagets udgivne version, 4,66 MB

Citationsformater

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title = "An improved north–south synchronization of ice core records around the 41 kyr 10Be peak",

abstract = "Using new high-resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic excursion ĝ1/4 ĝ€41ĝ€kyr ago. We estimate the precision of this synchronization to be ±20 years, an order of magnitude better than previous work. We discuss the implications of this new synchronization for making improved estimates of the depth difference between ice and enclosed gas of the same age ({\^I}{"}depth), difference between age of ice and enclosed gas at the same depth ({\^I}{"}age) in the EDC and EDML ice cores, spectral properties of the 10Be profiles and phasing between Dansgaard-Oeschger-10 (in NGRIP) and AIM-10 (in EDML and EDC).",

author = "Raisbeck, {Grant M.} and Alexandre Cauquoin and Jean Jouzel and Amaelle Landais and Jean-robert Petit and Lipenkov, {Vladimir Y.} and Juerg Beer and Hans-arno Synal and Hans Oerter and Johnsen, {Sigfus J.} and Steffensen, {Jorgen P.} and Anders Svensson and Fran{\c c}oise Yiou",

year = "2017",

month = mar,

day = "10",

doi = "10.5194/cp-13-217-2017",

language = "English",

volume = "13",

pages = "217--229",

journal = "Climate of the Past",

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TY - JOUR

T1 - An improved north–south synchronization of ice core records around the 41 kyr 10Be peak

AU - Raisbeck, Grant M.

AU - Cauquoin, Alexandre

AU - Jouzel, Jean

AU - Landais, Amaelle

AU - Petit, Jean-robert

AU - Lipenkov, Vladimir Y.

AU - Beer, Juerg

AU - Synal, Hans-arno

AU - Oerter, Hans

AU - Johnsen, Sigfus J.

AU - Steffensen, Jorgen P.

AU - Svensson, Anders

AU - Yiou, Françoise

PY - 2017/3/10

Y1 - 2017/3/10

N2 - Using new high-resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic excursion ĝ1/4 ĝ€41ĝ€kyr ago. We estimate the precision of this synchronization to be ±20 years, an order of magnitude better than previous work. We discuss the implications of this new synchronization for making improved estimates of the depth difference between ice and enclosed gas of the same age (Î"depth), difference between age of ice and enclosed gas at the same depth (Î"age) in the EDC and EDML ice cores, spectral properties of the 10Be profiles and phasing between Dansgaard-Oeschger-10 (in NGRIP) and AIM-10 (in EDML and EDC).

AB - Using new high-resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic excursion ĝ1/4 ĝ€41ĝ€kyr ago. We estimate the precision of this synchronization to be ±20 years, an order of magnitude better than previous work. We discuss the implications of this new synchronization for making improved estimates of the depth difference between ice and enclosed gas of the same age (Î"depth), difference between age of ice and enclosed gas at the same depth (Î"age) in the EDC and EDML ice cores, spectral properties of the 10Be profiles and phasing between Dansgaard-Oeschger-10 (in NGRIP) and AIM-10 (in EDML and EDC).

U2 - 10.5194/cp-13-217-2017

DO - 10.5194/cp-13-217-2017

M3 - Journal article

SN - 1814-9324

VL - 13

SP - 217

EP - 229

JO - Climate of the Past

JF - Climate of the Past

IS - 3

ER -

An improved north–south synchronization of ice core records around the 41 kyr <sup>10</sup>Be peak

Abstract

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An improved north–south synchronization of ice core records around the 41 kyr <sup>10</sup>Be peak