Title: Mobilization and transportation of radionuclides in surface water are linked sub-catchment geochemistry and river connectivity

Yasunori Igarashi1, Yuichi Onda2, Hikaru Sato2, Yoshifumi Wakiyama1, Maksym Gusyev1, Gennady Laptev3, Mark Zheleznyak1, Serhii Kirieiev Sr.4 and Alexei Konoplev5, (1)Fukushima University, Fukushima, Japan, (2)University of Tsukuba, Tsukuba, Japan, (3)Ukrainian Hydrometeorological Institute, Kiev, Ukraine, (4)State Specialized Enterprise “Ecocentre,” State Agency of Ukraine on Exclusion Zone Management, Chornobyl, Ukraine, (5)Fukushima University, Institute of Environmental Radioactivity, Fukushima, Japan