FN Archimer Export Format
PT J
TI Authigenic 10Be/9Be ratio signatures of the cosmogenic nuclide production linked to geomagnetic dipole moment variation since the Brunhes/Matuyama boundary
BT 
AF SIMON, Quentin
   THOUVENY, Nicolas
   BOURLES, Didier L.
   VALET, Jean-Pierre
   BASSINOT, Franck
   MENABREAZ, Lucie
   GUILLOU, Valery
   CHOY, Sandrine
   BEAUFORT, Luc
AS 1:1,2;2:1;3:1;4:2;5:3,4;6:1;7:1;8:1,2;9:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 Aix Marseille Univ, CNRS, IRD, Coll France,CEREGE UM34, Aix En Provence, France.
   Univ Paris Diderot, Sorbonne Paris Cite, IPGP, CNRS,UMR 7154, Paris, France.
   CEA CNRS UVSQ, LSCE IPSL, LSCE, UMR 8212, Paris, France.
   Univ Paris Saclay, Paris, France.
C2 UNIV AIX MARSEILLE, FRANCE
   UNIV PARIS 07, FRANCE
   CEA, FRANCE
   UNIV PARIS SACLAY, FRANCE
IF 3.35
TC 58
UR https://archimer.ifremer.fr/doc/00358/46910/46811.pdf
   https://archimer.ifremer.fr/doc/00358/46910/46814.pdf
   https://archimer.ifremer.fr/doc/00358/46910/46815.pdf
   https://archimer.ifremer.fr/doc/00358/46910/46816.csv
LA English
DT Article
CR MD 148 / PECTEN
   SEYMAMA - MD 65
BO Marion Dufresne
AB Geomagnetic dipole moment variations associated with polarity reversals and excursions are expressed by large changes of the cosmogenic nuclide beryllium-10 (10Be) production rates. Authigenic 10Be/9Be ratios (proxy of atmospheric 10Be production) from oceanic cores therefore complete the classical information derived from relative paleointensity (RPI) records. This study presents new authigenic 10Be/9Be ratio results obtained from cores MD05-2920 and MD05-2930 collected in the west equatorial Pacific Ocean. Be ratios from cores MD05-2920, MD05-2930 and MD90-0961 have been stacked and averaged. Variations of the authigenic 10Be/9Be ratio are analyzed and compared with the geomagnetic dipole low series reported from global RPI stacks. The largest 10Be overproduction episodes are related to dipole field collapses (below a threshold of 2 × 1022 Am2) associated with the Brunhes/Matuyama reversal, the Laschamp (41 ka) excursion, and the Iceland Basin event (190 ka). Other significant 10Be production peaks are correlated to geomagnetic excursions reported in literature. The record was then calibrated by using absolute dipole moment values drawn from the Geomagia and Pint paleointensity value databases. The 10Be-derived geomagnetic dipole moment record, independent from sedimentary paleomagnetic data, covers the Brunhes-Matuyama transition and the whole Brunhes Chron. It provides new and complementary data on the amplitude and timing of millennial-scale geomagnetic dipole moment variations and particularly on dipole moment collapses triggering polarity instabilities.
PY 2016
PD NOV
SO Journal Of Geophysical Research-solid Earth
SN 2169-9313
PU Amer Geophysical Union
VL 121
IS 11
UT 000391133200002
BP 7716
EP 7741
DI 10.1002/2016JB013335
ID 46910
ER

EF