[지구시스템] 지구사랑세미나(2023.09.22) 안내 - Dr. Cristiano P. Galeazzi
일시 : 2023-09-22(금) 11:30 ~ 12:30
연사 : Dr. Cristiano P. Galeazzi
소속 : 서울대학교 기초과학연구원
문의 : 강동혁 학생(aceray1248@snu.ac.kr)
장소 : 25-1동 3층 304호
Title: From large rivers to the rock record
Abstract: The recognition of large fluvial channels in the geological record is of great importance for regional palaeohydraulic and palaeogeographical reconstructions, inputs to reservoir modelling, and estimating the input of sediment to sedimentary basins, with consequent larger-scale implications for modelling basin fill. However, available criteria for the interpretation of the scale of ancient fluvial systems are still poorly tested, particularly the widely-adopted assumption that the abundance of large-scale dunes in some deep channels implies that abundant large-scale cross-strata sets will be in preserved in similar palaeochannels. To test this hypothesis, high-resolution multibeam echo-sounding imaging of two reaches in the Amazon River where large dunes are common were investigated, yielding an extensive dataset concerning dune geometry, position within the channel and, most importantly, the presence and distribution of smaller superimposed dunes on their lee sides.
Abstract: The recognition of large fluvial channels in the geological record is of great importance for regional palaeohydraulic and palaeogeographical reconstructions, inputs to reservoir modelling, and estimating the input of sediment to sedimentary basins, with consequent larger-scale implications for modelling basin fill. However, available criteria for the interpretation of the scale of ancient fluvial systems are still poorly tested, particularly the widely-adopted assumption that the abundance of large-scale dunes in some deep channels implies that abundant large-scale cross-strata sets will be in preserved in similar palaeochannels. To test this hypothesis, high-resolution multibeam echo-sounding imaging of two reaches in the Amazon River where large dunes are common were investigated, yielding an extensive dataset concerning dune geometry, position within the channel and, most importantly, the presence and distribution of smaller superimposed dunes on their lee sides.
첨부파일 (1개)
- Cristiano_Abstract.docx (13 KB, download:21)
