Serdecznie zapraszamy do wzięcia udziału w wykładzie online pod tytułem “Amazon sediment transport and accumulation in the realm of mixed fluvial and marine processes”, który wygłosi prof. Chuck Nittrouer (Sediment Dynamics Group, School of Oceanography, University of Washington, Seattle, USA). Wykład stanowi część serii “AMU Invited Lecture Series in Marine Geosciences I” organizowanej przez Uniwersytet im. Adama Mickiewicza w Poznaniu w ramach programu ID UB UAM. Wykład odbędzie się w czwartek (11 maja) o godzinie 16:30 na platformie MS Teams (link: https://t.ly/HcV1). Wykład i otwarta dyskusja po wykładzie będą w języku angielskim.
Informacja o wykładowcy i wykładzie:
Professor Nittrouer is an author of 180 papers (H=57) focused mainly on modern sedimentation on the continental margins worldwide. His research interests include the modern and ancient formation of sedimentary strata in continental-margin environments, and the effects of physical and biological oceanic processes on sedimentary characteristics. He is a professor in Earth & Space Sciences and in the School of Oceanography, and has made a career studying places where terrestrial sediment sources enter the ocean. These have included some of the biggest rivers (e.g., Amazon, Yangtze, Fly) and smaller systems (e.g., Po, Rhone, Sepik, Columbia, Eel, Copper), as well as tidewater glaciers entering southern and northern hemisphere oceans (e.g., Antarctica, Patagonia, Alaska). He has been elected a Fellow of both the American Geophysical Union and the Geological Society of America, and has received many awards during the course of his distinguished career, including Shepard Medal for excellence in marine geology.
Sediment transfer from land to ocean begins in coastal settings and, for large rivers such as the Amazon, has dramatic impacts over thousands of kilometers covering diverse environmental conditions. In the relatively natural Amazon tidal river, combinations of fluvial and marine processes transition toward the ocean affecting the transport and accumulation of sediment in floodplains and tributary mouths. The enormous discharge of Amazon freshwater causes estuarine processes to occur on the continental shelf, where much sediment accumulation creates a large clinoform structure and where additional sediment accumulates along its shoreward boundary and in tidal flats and mangrove forests. Some remaining Amazon sediment is transported beyond the region near the river mouth, and fluvial forces on it diminish.