Szczecin Marginal Seas Webinars / Winter Semester 2021/2022
Dear colleagues,
According to our program for the Szczecin Marginal Seas Webinars during the Winter Semester 2021/2022 we invite you warmly for the third Webinar to be held
on December 9, 2021, 3:00 pm (CET).
Please note that the webinar will start one hour later than originally announced.
Please, join our online meeting for the lecture:
"Sedimentation processes and accumulation rates on continental shelves of South China Sea and Andaman Sea – insights from 210Pb and 137Cs"
to be presented by
Prof. Dr. Witold Szczuciński
University of Poznan, Institute of Geology, Poznan, Poland
Abstract
Gamma spectrometry is a commonly used tool to measure the activities of natural and artificial radioisotopes in sediments. The most common application is related to geochronology applying 210Pb and 137Cs techniques, which are complementary methods to date sediments back in time to over 100 years ago, providing a key tool for the stratigraphy of the Anthropocene. However, the vertical and spatial distribution of these radioisotopes in sediments may provide also insights into the style of sedimentation, variability in sediment accumulation rates, sediment transport, as well as post-depositional processes (mixing). The present paper focuses on new data for marginal seas of SE Asia, namely the high accumulation rate area off Mekong River (continental shelf of South China Sea) and continental shelf of Andaman Sea (offshore Thailand) affected by catastrophic cyclones and tsunami. It is underlined that the gamma spectrometry analyses of sediments provide more opportunities than age dating, e.g., tracers for qualitative and quantitative assessment of sediment transport and sedimentation. They can provide information about erosion and deposition events (e.g., tsunami and cyclones), sedimentation processes, areas of sediment bypassing, and sediment sinks, as well as their sediment provenance.
The meeting room will be open from 2:30 pm (CET), but the seminar will begin at 3:00 pm (CET).
To join the meeting please use the link:
https://teams.microsoft.com/l/meetup-join/19%3a0ee21c3b364e4709810bc45b7fbb4284%40thread.tacv2/1638885844725?context=%7b%22Tid%22%3a%22af892dd6-4563-4455-9c05-a398a43f2362%22%2c%22Oid%22%3a%221e9df312-5fc1-4e40-bc0d-ab7f66ee7bd8%22%7d
or use the code: 2sc5rph
See you for the webinar,
with best regards,
Joanna Dudzińska-Nowak, Jan Harff, Andrzej Witkowski
Szczecin Marginal Seas Webinars' Conveners