New constraints on the geomagnetic field intensity variations in Western Russia over the past millennium

Natalia Salnaia, Institute of Physics of the Earth RAS, Moscow, Russia, Yves Gallet, Institut de Physique du Globe de Paris, Paris, France, Agnes Genevey, CNRS / Université Pierre et Marie Curie, Laboratoire d'Archéologie Moléculaire et Structurale, UMR 8220, Paris, France and Ilya Antipov, Saint Petersburg State University, Saint Petersburg, Russia