学术报告: Branching and meandering tidal networks: field observations, mathematical modelling and laboratory experiments

报告题目: Branching and meandering tidal networks:

field observations, mathematical modelling and laboratory experiments

报告人:AssociateProfessor Andrea D’Alpaos, University of Padova, Italy

时间:2016年10月25日(周二)下午：15:15-16:15

地点:严恺馆502

报告内容摘要:

Channel networks are ubiquitous morphological features of tidal landscapes that furnish preferential pathways for flooding and drying of intertidal areas and for the circulation of sediment and nutrients within the landscapes they dissect. Despite their importance in landscape evolution, tidal branching and meandering networks have received less attention than their fluvial counterparts, particularly in terms of the chief processes governing their initiation and evolution, their response to changes in the environmental forcings, and their meandering features.

In this talk I examine the main morphological features of tidal channel networks, highlighting analogies and differences with fluvial networks, together with their dynamic response to changes in the environmental forcings, on the basis of filed observations, mathematical modelling and laboratory experiments. In addition, on the basis of a similar multidisciplinary approach, I analyse the characteristics of tidal meanders which, in spite of their importance, wide occurrence, and influence on both the dynamics and on the stratigraphy of the platforms they cut through, lack the detailed inspection that has been dedicated to their fluvial counterparts. A relevant although unanswered question, that I will address, is whether or not theories and behavior mediated from the study of fluvial meanders can be applied to tidal ones.

报告人简介:

Associate Professor Andrea D’Alpaos’research focuses on the mutual interaction and adjustments between physical and biological processes in estuarine landscapes. His research on the biomorphodynamic evolution of these landscapes includes understanding, through field observations, laboratory experiments and modelling, how biogeomorphic feedbacks contribute to shape coastal landscapes and how they drive system response to changes in the environmental forcing and to human interferences. He is author of more than 40 papers published in leading peer reviewed international journals and more than 50 papers published on the proceedings of national and international conferences. His academic h-index is 20 in Scopus.

科研工作:

• Author and co-author of 42 papers published or in press on peer-reviewed international journals; 3 peer-reviewed book chapters; more than 50 papers published on the proceedings of Italian and international conferences (Indicesas follows: Web of Science 44 documents, 1228 total citations by 571 documents, H-index 19; Scopus 53 documents, 1322 total citations by 611 documents, H-index 20);

• Reviewer for Nature Geoscience; Nature Communications; Proceedings of the National Academy of Sciences USA; Geophysical Research Letters; PLOS-ONE, Journal of Geophysical Research; Water Resources Research; Estuarine Coastal and Shelf Science; Continental Shelf Research; Geomorphology; Earth Surface Processes and Landforms; Marine Ecology Progress Series; Advances in Water Resources; Coastal Engineering.

• Guest Editor for the Special Issue “Ecogeomorphological feedbacks of water fluxes, sediment transport and vegetation dynamics in rivers and estuaries” of Advances in Water Resources (IF2014: 3.417), together with Dr. Marco Toffolon (University of Trento) and Dr. Carlo Camporeale (Politecnico di Torino).

• Involved in several national and international research projects.

• Scientific Coordinator of the research projects:

- “Analysis of the stability of fluvial levees through mathematical modelling and non-invasive geophysical investigations”, University of Padova, 2008-2011;

- “Reading signatures of the past to predict the future: 1000 years of stratigraphic record as a key for the future of the Venice Lagoon. Acronimo: PASTtoFUTURE”, Fondazione Cassa di Risparmio di Padova e Rovigo, 2012-2015;

- “Tidal vs. tidally-influenced fluvial point bars: facies distribution and implications for reservoirs production development”, Shell International Exploration and Production, 2013-2016;

• Convener of the Session “Coasts and Estuaries”, EGU General Assembly 2008;

• Convener of the Session “Pattern Formation in Earth System Sciences”, AGU Fall Meeting 2010, 2011, 2012, 2014;

• Convener of the Session “Coastal Geomorphology and Morphodynamics”, AGU Fall Meeting 2012;

• Convener of the Session “Biogeodynamics and Earth System Sciences”, AGU Fall Meeting 2014.

近年代表论文:

Brivio L., M. Ghinassi, A. D'Alpaos, A. Finotello, A. Fontana, M. Roner, N. Howes (2016), Aggradation and lateral migration shaping geometry of a tidal point bar: An example from salt marshes of the Northern Venice Lagoon (Italy), Sedimentary Geology, 343, 141-155, http://dx.doi.org/10.1016/j.sedgeo.2016.08.005.

D’Alpaos A., M. toffolon, and C. Camporeale (2016), Ecogeomorphological feedbacks of water fluxes, sediment transport and vegetation dynamics in rivers and estuaries, Advances in Water Resources, http://dx.doi.org/10.1016/j.advwatres.2016.05.019.

M. Roner, A. D'Alpaos, M. Ghinassi, M. Marani, S. Silvestri, E. Franceschinis, N. Realdon (2015), Spatial variation of salt-marsh organic and inorganic deposition and organic carbon accumulation: Inferences from the Venice lagoon, Italy, Advances in Water Resources, http://dx.doi.org/10.1016/j.advwatres.2015.11.011.

D’Alpaos A. and M. Marani (2015), Reading the signatures of biologic–geomorphic feedbacks in salt-marsh landscapes, Advances in Water Resources, http://dx.doi.org/10.1016/j.advwatres.2015.09.004.

Carniello, L., A. D’Alpaos, G. Botter, and A. Rinaldo (2016), Statistical characterization of spatiotemporal sediment dynamics in the Venice lagoon, Journal of Geophysical Research- Earth Surface, 121, 1049–1064, doi:10.1002/2015JF003793.

Belliard, J.-P., M. Toffolon, L. Carniello, and A. D’Alpaos (2015), An ecogeomorphic model of tidal channel initiation and elaboration in progressive marsh accretional contexts, Journal of Geophysical Research- Earth Surface, 120(6), 1040–1064, doi:10.1002/2015JF003445.

Lanzoni, S., and A. D’Alpaos (2015), On funneling of tidal channels, Journal of Geophysical Research- Earth Surface, 120,doi:10.1002/2014JF003203.

Boaga, J., A. D’Alpaos, G. Cassiani, M. Marani, and M. Putti (2014), Plant-soil interactions in salt-marsh environments: experimental evidence from electrical resistivity tomography (ERT) in the Venice lagoon, Geophysical Research letters, 41(17), 6160-6166, doi:10.1002/2014GL060983.

Van Oyen, T., L. Carniello, A. D’Alpaos, S. Temmerman, P. Troch, and S. Lanzoni (2014), An approximate solution to the flow field on vegetated intertidal platforms: applicability and limitations, Journal of Geophysical Research- Earth Surface, 119(8), 1682-1703, doi:10.1002/2013JF003064.

Venier, C., A. D'Alpaos, and M. Marani (2014), Evaluation of sediment properties using wind and turbidity observations in the shallow tidal areas of the Venice lagoon, Journal of Geophysical Research- Earth Surface, 119(7), 1604-1616, doi: 10.1002/2013JF003019.

Zhou, Z., Olabarrieta M., L. Stefanon, A. D'Alpaos, L. Carniello and G. Coco (2014), A comparative study of physical and numerical modeling of tidal network ontogeny, Journal of Geophysical Research- Earth Surface, 119(4), 892-912, doi:10.1002/2014JF003092.

Carniello, L., S. Silvestri, M. Marani, A. D'Alpaos, V. Volpe, and A. Defina (2014), Sediment dynamics in shallow tidal basins: In situ observations, satellite retrievals, and numerical modeling in the Venice Lagoon, Journal of Geophysical Research- Earth Surface, 119(4), 802-815, doi:10.1002/2013JF003015.

Zhou, Z., L. Stefanon, Olabarrieta M., A. D'Alpaos, L. Carniello and G. Coco (2014), Analysis of the drainage density of experimental and modelled tidal networks, Earth Surface Dynamics, 2, 105–116, doi:10.5194/esurf-2-105-2014.

Da Lio, C., A. D'Alpaos, and M. Marani (2013), The Secret Gardener: Vegetation and the Emergence of Bio-geomorphic Patterns in Tidal Environments, Philosophical Transactions of the Royal Society A, 371: 20120367,http://dx.doi.org/10.1098/rsta.2012.0367.

Viero, D. P., A. D'Alpaos, L. Carniello, and A. Defina (2013), Mathematical modeling of flooding due to river bank failure, Advances in Water Resources, 59, 82-94, http://dx.doi.org/10.1016/j.advwatres.2013.05.011.

D'Alpaos, A. , L. Carniello, and A. Rinaldo (2013), Statistical mechanics of wind wave-induced erosion in shallow tidal basins: inferences from the Venice Lagoon, Geophysical Research letters, 40 (13), 3402–3407, doi:10.1002/grl.50666.

Marani, M., C. Da Lio, and A. D'Alpaos (2013), Vegetation engineers marsh morphology through multiple competing stable states, Proceedings of the National Academy of Sciences USA, 110(9), 3259-3263, doi:10.1073/pnas.1218327110.