2017 AGU Session B020: Concentration-Discharge Relations in the Critical Zone

Article Type: 
Start Date: 
Friday, July 7, 2017 - 09:45 to Wednesday, August 2, 2017 - 09:45

B020: Concentration-Discharge Relations in the Critical Zone

The abstract submission deadline is August 2, 2017.

Session ID#: 23702
Session Description:
Process-level prediction of critical zone (CZ) structure and long-term evolution depends on an improved understanding of how hydrologic flows and biogeochemical reactions are coupled on the incremental time scale of hydrologic events.  Hydro-bio-geochemical couplings can be inferred from solute releases measured down-gradient of reactive flow paths.  These flow paths have variable lengths, compositions, and residence times, and their mixing is reflected in concentration-discharge (C-Q) relations.  We invite contributions that seek to resolve mechanisms operating within the CZ (from canopy to bedrock) that control down-gradient C-Q behavior.  Focus of the session spans the full range of rock-derived and bio-active solutes, including dissolved, gaseous and colloidal species that may co-occur for a given element. Papers that incorporate observations of internal catchment function (e.g., dynamic relations among hydrology and (bio)geochemistry in various CZ locations) to interpret controls over integrated C/Q response are especially encouraged.

Primary Convener:  
Jon Chorover, University of Arizona, Tucson, AZ, United States
Jerome Gaillardet, Institut de Physique du Globe de Paris, Paris, France, William H McDowell, University of New Hampshire Main Campus, Durham, NH, United States and Jennifer L Druhan, University of Illinois at Urbana Champaign, Urbana, IL, United States

H - Hydrology

Index Terms:
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES] 
0486 Soils/pedology [BIOGEOSCIENCES] 
1804 Catchment [HYDROLOGY] 
1806 Chemistry of fresh water [HYDROLOGY]


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