Keynotes

Monday, Aug. 17, 9:30 AM: Gary Parker

Research Contributions of Marcelo H. Garcia, or at least Those Before the Still Young Age of 50

Room 1518 in the Hydrosystems Lab

Tuesday, Aug. 18, 9:00 AM: Yarko Niño

Hydropower projects in Chilean Patagonia. Insights into the baseline hydrodynamics.

In this talk, some aspects of the baseline hydrodynamics of aquatic systems that will be eventually impacted by the construction of two different hydropower projects that are being planned in Chilean Patagonia will be discussed. HidroAysen project considers among other elements the construction of two dams in Baker river. This river is the outflow of Lake General Carrera, a large transboundary lake shared by Chile and Argentina, and receives two main tributaries coming from the Patagonian Northern Ice Field and some other minor tributaries from nivo-pluvial catchments in the area. In this talk, mainly sedimentological aspects of Baker river will be discussed. On the other hand, RíCuervo project, located to the north of the Baker river near the town of Aysen, considers the building of a dam in Meullin Lake, in order to create a reservoir that will flood and connect it with Yulton Lake, a nearby and slightly larger water body. The water from the reservoir will be taken to a power plant discharging into Aysen fjord, and thus decreasing the natural discharge of Cuervo river, the natural outflow of Lake Meullin. In this talk, thermo-hydrodynamic and limnological aspects of the lakes system will be discussed, together with hydrodynamic aspects of Cuervo river and its discharge into Aysen fjord.

Room 1518 in the Hydrosystems Lab

Prof. Yarko Niño, PhD
Associate Professor
Department of Civil Engineering
Universidad de Chile http://www.uchile.cl
http://www.cec.uchile.cl/~envflow/ynino.html

Lectures

Monday, Aug. 17, 2:00 PM: Jim Best

Sediment-laden, Dirty Flows: Turbulence Modulation and Environmental Significance

Many natural flows contain various quantities of fine sediment that are carried in suspension and may have an effect on modulating the nature of the boundary layer velocity profile and its turbulent characteristics. Laboratory experiments using kaolinite as a fine-grained suspended sediment have employed ultrasonic Doppler velocity profiling (UDVP) to characterize the changing nature of flow as sediment concentration is increased up to c. 17% by volume. This paper will outline the nature of such modulation, propose some causative mechanisms and speculate on the potential occurrence and importance of such flows in a wide range of environments from rivers to the deep-sea.

Room 1518 in the Hydrosystems Lab

Tuesday, Aug. 18, 2:00 PM: Juan Pedro Martin Vide

Bed resistance and sediment transport in experiments with sand-gravel antidunes

Professor, Universitat Politecnica de Catalunya

Bruce Rhoads

The Importance of Three-dimensional Flow Structure in River Form and Dynamics: Examples from Meanders, Confluences, Cutoffs and Naturalized Straight Channels

Geomorphologists and engineers have long recognized that flow in rivers is often highly three-dimensional, especially where channel planform is not straight or channel geometry is not uniform. Despite this recognition, full appreciation of the role of 3D flow in shaping the form of river channels and in producing dynamic change in channel form has only emerged over the past 10-15 years through major advances in the capacity both to measure and model flow three-dimensionality. This talk will examine how 3D flow, through links with sediment mobilization and transport, contributes to the morphodynamics of river channels, using examples from meanders, confluences, cutoffs, and naturalized straight streams. Examples will focus mainly on field investigations, but connections to numerical modeling will be presented. Future research needs related to this topic will also be discussed.

Room 1518 in the Hydrosystems Lab

Bruce L. Roads
Head, Department of Geography
University of Illinois