Searching for potential multi-hazard events during the last 1.5 million years of the Pleistocene epoch

Increasing attention has been paid to multi-hazards in environmental disaster studies produced during the last decade. Multi-hazard focus on occurrence, interaction and effect of several natural hazards same region. Despite increasing number multi-hazard studies, few investigations have focused global-scale events. With aim closing this gap, our study focuses identification periods 1.5 million years Pleistocene epoch, with quasi-parallel appearance (e.g., asteroid impacts large volcanic eruptions a Volcanic Explosivity Index (VEI) 8 7) amplifying their individual effects thus causing long-term, changes. Of seven identified potential events, three were considered as possible events longer term (paleoclimatic) impact; dated c.a., 1.4 Ma (marine isotope stage – MIS45), 1.0 (MIS 27), 100 ka 5c), respectively. Two additional (around 50 20 ka) being associated more restricted scale which might cause “Little Ice Age-like” climatic episode history Period. In addition, we present hypothesis about complex response event consisting series eruption linked geomagnetic polarity change, namely Matuyama-Brunhes Boundary, be accompanied by global cooling result final step Early Middle Transition.