| Session Details | |
| Section | SE - Solid Earth Sciences |
| Session Title | Tephrochronology and Lake Studies of Environmental Change |
| Main Convener | Dr. Caroline Bouvet De Maisonneuve (Nanyang Technological University, Singapore) |
| Co-convener(s) | Dr. Christos Gouramanis (National University of Singapore, Singapore) Dr. Sean Pyne-O'Donnell (Nanyang Technological University, Singapore) |
| Session Description | Lake sediments are fantastic archives of geological processes (floods, landslides, volcanic eruptions, earthquakes) and environmental change (climate change and change in land use). Volcanic ash can travel far and forms well-preserved tephra layers in quiet, low-energy sedimentary environments such as lakes. The identification and correlation of tephra layers is therefore useful to reconstruct the number, timing and magnitude of eruptions that affected a given location but also to link, synchronize and date geological or environmental events that impact the local and regional ecology, human and climatic history. Long term hydrological variations are recorded as changes in sedimentology, geochemistry and biological proxies. Thus lake sediments provide high resolution palaeoenvironmental data for variations and interactions of the monsoons, El Nino Southern Oscillation, Indian Ocean Dipole, floods and droughts, and human activities. This session invites contributions involving sedimentology, tephrostratigraphy, paleoclimatology, micropaleontology, palynology and/or paleo-botany and archaeology to investigate environmental changes recorded by lakes in the Asia-Oceania region. |