Seminar on climate change held at BOU

Gazipur Correspondent :
A seminar on climate change and disaster management organized by the Open School of BOU was held at Bangladesh Open University (BOU) in Gazipur on Monday.
Dr. Jennifer Pickering – Water Resources Research Fellow- of The University of Memphis, United States presented the keynote paper in the seminar, Dr. Jenn, who is doing research on ‘Megafloods of Bangladesh’ and did her Master of Science and PhD studies on Bangladesh aspects, presented her paper on “Rethinking Geomorphic Drivers in Bengal: Impacts of Megafloods on Fluvial-Deltaic System Dynamics”.
Her research focused on water sources of Bangladeshi rivers – sedimentation, elevation, and sea level. While addressing on Megafloods on Fluvial-Deltaic System, she said, ‘The paleo valley floor is defined by a gravel unit containing boulder-sized clasts up to 30 cm in diameter, deposited after ca. 30 ka but before ca. 9 ka.The current research indicates that glacial-lake outburst floods sourced from the Tibetan reaches of the Brahmaputra were routed through the low stand valley, producing mega flood-scale discharge capable of transporting gravel and cannibalizing the valley margins. The timing of these glacial-lake outburst flood-driven discharge events was coincident with valley development and explains the anomalously large width of the valley and basal gravel surface.Despite the underfit scale of Brahmaputra discharge following the last glacial period, a strengthening monsoon and high sediment discharge in the early Holocene subsequently contributed to the efficient infilling of the massive paleovalley by the mid-Holocene.
As such, it represents a geologically instantaneous time surface that can be used as a marker for stratigraphic correlation but one that is not in phase with eustatic sea-level fall’. BOU vice-chancellor Professor Dr Syed Humayun Akhter and Professor Dr. Mike Blum, University of Kansas, USA attended the seminar.