Saori Ito¹, Miriam Pfeiffer¹, Ophery O. Ilomo², Takaaki Watanabe³, Lars Reuning¹, Christopher A. Muhando², Ali M. Ussi⁴, Chuan-Chou Shen⁵, Hsun-Ming Hu^5,6 and Jens Zinke^7,8, (1)Kiel University (CAU), Kiel, Germany, (2)University of Dar es Salaam, Dar es Salaam, Tanzania, (3)University of Kiel, Institute for Geosciences, Kiel, Germany, (4)The State University of Zanzibar, Zanzibar, Tanzania, (5)National Taiwan University, Taipei, Taiwan, (6)AORI University of Tokyo, Kashiwa, Japan, (7)University of Witwatersrand, Johannesburg, South Africa, (8)University of Leicester, School of Geography Geology & The Environment, Leicester, United Kingdom