Themes and speakersThe GES is organized into different themes. Each theme has a oral (morning) session (invited talks) and a poster (afternoon) poster session, ideal for discussions.
|Monday 18||Tuesday 19||Wednesday 20||Thursday 21||Friday 22|
T. Le Borgne
F. von Blanckenburg
Lundi 18 Août 2014
08:30 - 09:00 : Opening and welcome
09:00 - 09:40 : Variation in critical zone processes and architecture across slope aspects
09:00 - 11:00 : Theme 1: Measuring the Critical Zone.
Chairman: Lin Ma
In this session, we encourage submissions on measurement and long term monitoring of the critical zone. This may include instrumental observations (in particular, high frequency measurements), subsurface imaging, concentration-discharge relationships, mass budgets of matter and energy, and metrics of rates and residence times, as well as proposals for a metrics of the Critical Zone. This session is open to submissions from individual sites or from networks of sites.
09:40 - 10:20 : Impact of vegetation and decennial rainfall fluctuations on the weathering fluxes exported from a dry tropical forest (Mule Hole)
10:20 - 11:00 : Measuring the Critical Zone: Lessons from the Damma Glacier Critical Zone Observatory
11:00 - 11:15 : coffee break
11:10 - 13:15 : Theme 2: Hydrologic and geomorphic drivers of the Critical Zone.
The idea of the session is to show how hydrologic process influence geochemistry and finally, how geochemistry can help resolve hydrologic process. The session also aims at covering works on interplay between chemical weathering and erosion and on the geomorphic evolution of the CZ. In this session we aim in particular at attracting submission on the « deep critical zone », ie. the groundwater component the contribution of these waters to surface water, the interplay between deep waters and surface waters.
11:15 - 12:15 : Co‐evolution of surface topography, critical zone, and hydrogeomorphic processes
12:15 - 13:15 : The impact of mixing processes on concentration distributions and reaction kinetics in hydrological systems
13:15 - 15:00 : Lunch
Mardi 19 Août 2014
08:25 - 10:45 : Theme 3: The Critical Zone: a living interface
Chairman: Gaojun Li
The critical zone is a living interface. This session will consider the impact of biology and ecology on the geochemistry of the critical zone from the molecular to global scale. The session will focus on studies in which these elements are integrated, for example in mineral weathering, the cycling of elements, ecosystem productivity and organic matter transport to the oceans
08:30 - 09:15 : Biology as an agent of chemical and mineralogical change in soil
09:15 - 10:00 : The role of subsurface microbial processes in carbon cycling
10:00 - 10:45 : Upscaling nitrogen removal capacity from riparian zone to the landscape scale: A new framework
10:45 - 11:00 : Coffee break
10:55 - 13:00 : Theme 4: From Nano to Micro in the Critical Zone
Chairman: Siggi Gislason
This session aims at presenting cutting edge scientific progress made at the nano and micro scale in the lab or in the field. It will include experimental kinetic studies, surface science, characterization and behavior of nanophases, and contaminant behaviour.
11:00 - 12:00 : The role of inorganic and organic additives on CaCO3 crystallisation
12:00 - 13:00 : Advancing our understanding of pore scale mineral dissolution
13:00 - 15:00 : lunch
Mercredi 20 Août 2014
08:25 - 10:45 : Theme 5: Isotopes in the Critical Zone
Theme 5: Isotopes in the Critical Zone
Chairman: Julien Bouchez
This session will explore the use of isotopes to probe critical zone processes. In particular, recent technical advances have made possible the measurement of previously difficult isotopes. These “non traditional” isotopes provide a new window on processes in the Critical Zone. Studies based on experiment and ab initio calculations are expected in this session together with field-based approaches.
08:30 - 09:15 : Kinetic and thermodynamic controls of divalent metals isotope composition in carbonate: Experimental investigations and applications
09:15 - 10:00 : Element cycling in the Critical Zone as viewed by new isotope tools
10:00 - 10:45 : A model linking stable isotope fractionation to water flux and transit times in heterogeneous porous media
10:45 - 11:00 : coffee break
10:55 - 13:00 : Theme 6: Characteristic timescales of the Critical Zone
Chairman: Francois Chabaux
This session aims at synthetizing studies related to rate of formation/destruction and characteristic timescale of the critical zone. This includes the use of cosmogenic isotopes, short-period radionuclides and other techniques such as OSL and thermochronology to infer about residence time of material in mobile layers, residence time in the CZ, rates of weathering, denudation, water residence times, time to respond to climate perturbations (in ecosystem structure, solute/sediment flux, in topography or soil thickness).
11:00 - 12:00 : Meridional and temporal variations of mountain erosion in response to Plio-‐Pleistocene cooling
12:00 - 13:00 : Quantifying geomorphic controls on time in weathering systems
13:00 - 14:00 : lunch
Jeudi 21 Août 2014
08:25 - 10:30 : Theme 7: The Critical Zone and the geological evolution of the biogeochemical cycles
Chairman: Karl Steefel
In this session, we wish to explore the couplings between Critical Zone functioning and the evolution of global biogeochemical cycles through geological time. The role of weathering in the Earth‘s climatic evolution is related to tectonics, physical erosion, relief and the evolution of life. We encourage submissions on those couplings and on the evolution of atmospheric CO2, based on experimental, field or modeling approaches.
08:30 - 09:30 : The Cenozoic oceanic lithium isotope paleo‐variations: the key role of climate and storage processes in the critical zone
09:30 - 10:30 : Trees and forests as geo-‐ engineers of past and future global climates
10:00 - 12:00 : Scratching the critical zone: the global footprint of agricultural soil erosion
10:30 - 11:00 : coffee break
10:55 - 13:00 : Theme 8: Anthropogenic changes, sustainability and the Critical Zone
Chairman: Jens Hartmann
The idea of the session is to explore the links between the Critical Zone concept and Global Changes. Terrestrial surfaces play a major role in the evolution of not only climate but also on the sustainability of water and the soil resource. We encourage submissions in this session on the importance of understanding the critical zone of the Earth in climate models, agricultural studies, fate and behavior of contaminants and environmental geochemistry. The session also aims at exploring the geo-engineering of the Critical zone.
12:00 - 13:00 : Carbon leakage through the terrestrial-aquatic interface: Implications for the anthropogenic CO2 budget
13:00 - 15:00 : lunch
Vendredi 22 Août 2014
08:25 - 10:30 : Theme 9: Integrated Critical Zone Science
Theme 9: Integrated Critical Zone Science
Chairman: Chen Zhu
Critical zone science has emerged as a new scientific paradigm that is different from ecosystem science. This session tries to envision what is Critical Zone Science and how it may transform our understanding of the Earth’s geophysiology.
08:30 - 09:30 : Designing a System of Models to Understand the Critical Zone
09:30 - 10:30 : Relationships between the transit time of water and the fluxes of weathered elements through the critical zone
10:30 - 10:45 : coffee break
10:40 - 13:00 : Theme 10: The Critical Zone, a new scientific paradigm?
Chairman: Yves Godderis
The Critical Zone concept has important implications in the way stakeholders and policymakers are condidering the surface of the Earth. This theme is open to the sociology of science point of view.