1. Far East Branch North East Interdisciplinary Science Research Institute N.A. Shilo Russian Academy of Sciences 16 Portovaya St. Magadan 685000, Russia
2. Earth & Space Sciences and Quaternary Research Center University of Washington Seattle WA 98195 USA
3. Lawrence Livermore National Laboratory Center for Accelerator Mass Spectrometry 7000 East Ave Livermore CA 94551, USA
4. Far East Branch Pacific Institute of Geography Russian Academy of Sciences 7 Radio Street Vladivostok 690041 Russia