GP11A:
Reconstructing the Secular Variation of the Earth's Magnetic Field in the Past: Recent Methodological Advances and New Palaeomagnetic and Archaeomagnetic Data I


Session ID#: 10753

Session Description:
Historical and instrumental data from satellites and geophysical observatories allow us to understand the spatial and temporal evolution of the geomagnetic field during the last decades. To reconstruct the secular variation of the Earth's magnetic field in older periods the use of well-dated archaeological material, volcanic rocks, lacustrine and marine sediments is necessary. In this session, we invite contributions focused on the acquisition of new directional and archaeointensity palaeomagnetic data for the last 10ky, including archaeomagnetic, lava flows and sedimentary records. The session solicits also contributions about innovative measurement techniques for the acquisition, analysis and interpretation of palaeo- and archaeo-magnetic data and their use in geomagnetic field modeling during Holocene.
Primary Convener:  Evdokia Tema, Università degli Studi di Torino, Dipartimento di Scienze della Terra, Torino, Italy
Conveners:  Evgeniy Kulakov, Novosibirsk State University, Novosibirsk, Russia, Robert G Hatfield, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, United States and Emilio Herrero-Bervera, Hawai’i Institute of Geophysics and Planetology, University of Hawai’i at Mānoa, Honolulu, HI, United States
Chairs:  Evgeniy Kulakov, Novosibirsk State University, Novosibirsk, Russia, Robert G Hatfield, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, United States and Emilio Herrero-Bervera, Hawai’i Institute of Geophysics and Planetology, University of Hawai’i at Mānoa, Honolulu, HI, United States
OSPA Liaison:  Marine Séverine Foucher, Michigan Technological University, Geological and Mining Engineering and Sciences, Houghton, MI, United States
Index Terms:

1503 Archeomagnetism [GEOMAGNETISM AND PALEOMAGNETISM]
1521 Paleointensity [GEOMAGNETISM AND PALEOMAGNETISM]
1522 Paleomagnetic secular variation [GEOMAGNETISM AND PALEOMAGNETISM]

Abstracts Submitted to this Session:

The Multispecimen Method for Absolute Paleointensity Determination (Invited) (58722)
Mark J Dekkers, Utrecht Univ, Utrecht, Netherlands, Lennart V de Groot, Utrecht University, Earth Sciences, Utrecht, Netherlands and Marilyn Monster, Utrecht University, Utrecht, Netherlands
Comparison of Thellier-type and multispecimen absolute paleointensities obtained on Miocene to historical lava flows from Lanzarote (Canary Islands, Spain) (61353)
Manuel Calvo-Rathert1, Juan Morales2, Ángel Carrancho1 and Avto Gogichaishvili2, (1)University of Burgos, Burgos, Spain, (2)UNAM National Autonomous University of Mexico, Morelia, Mexico
Effect of low-temperature demagnetization on Thellier paleointensity determinations (Invited) (60012)
Aleksey V Smirnov, Michigan Technological University, Geological and Mining Engineering and Sciences, Houghton, United States and Evgeniy Kulakov, Novosibirsk State University, Novosibirsk, Russia
Tsunakawa-Shaw method - an absolute paleointensity technique using alternating field demagnetization (Invited) (58802)
Yuhji Yamamoto1, Nobutatsu Mochizuki2, Hidetoshi Shibuya2 and Hideo Tsunakawa3, (1)Kochi University, Center for Advanced Marine Core Research, Kochi, Japan, (2)Kumamoto University, Kumamoto, Japan, (3)Tokyo Institute of Technology, Tokyo, Japan
A paleomagnetic and relative paleointensity record from the Argentine Basin (western South Atlantic Ocean) for the last ~125 kyrs (Invited) (80593)
Clifford W Heil Jr1, Joseph Stephen Stoner2, Guillaume St-Onge3 and John W King1, (1)Univ Rhode Island, Narragansett, RI, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (3)University of Quebec at Rimouski UQAR, Rimouski, QC, Canada
New Insights on Long Term Geomagnetic Moment Variation from Cosmogenic Nuclide and Paleointensity Signatures along Ocean Sediment Cores. (70187)
Nicolas Thouveny1,2, Didier L Bourles2, Jean-Pierre Valet3, Franck C Bassinot4, Lucie Ménabréaz5, Quentin Simon6, Francois Demory5, Guillou Valery5, Laurence Vidal7, Luc Beaufort8, Thibault de Garidel-Thoron1 and ASTER Team, (1)CEREGE, Aix-en-Provence Cedex, France, (2)CEREGE, UM34, Aix Marseille Université, CNRS, IRD, Aix En Provence, France, (3)Institut de Physique du Globe de Paris, Paris, France, (4)Laboratoire des Sciences du Climat et de l'Environnement, UMR 8212 CEA-CNRS-UVSQ (LSCE), Gif-sur-Yvette, 91198, France, Gif-sur-Yvette, 91198, France, France, (5)CEREGE, UM34, Aix Marseille Université, CNRS, IRD, Aix-en-Provence Cedex, France, (6)CEREGE, Aix en Provence, France, (7)Aix Marseille Univ, CNRS, IRD, INRA, Coll France, CEREGE, Aix en Provence, France, (8)CEREGE-CNRS-Aix Marseille Univ., Aix-en-Provence, France
The Effect of Bioturbation on Relative Paleointenstiy Records (61325)
Ramon Egli, Zentralanstalt fuer Meteorologie und Geodynamik, Vienna, Austria, Xiangyu Zhao, Ludwig Maximilian University of Munich, Munich, Germany and Stuart A Gilder, Ludwig Maximilians University of Munich, Munich, Germany

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