River Corridor Model Constrained by Time‐Lapse Seismic Acquisition

Autor: Marine Dangeard, Damien Jougnot, Agnès Rivière, Ludovic Bodet, Alexis Maineult, Solenne Schneider, Roger Guérin
Přispěvatelé: Milieux Environnementaux, Transferts et Interactions dans les hydrosystèmes et les Sols (METIS), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL), Centre de Géosciences (GEOSCIENCES), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Water table
[SDE.MCG]Environmental Sciences/Global Changes
Flow (psychology)
0207 environmental engineering
Hydrogeology
02 engineering and technology
010502 geochemistry & geophysics
01 natural sciences
Hydrogeological Model
MESH: h
Hydrogeophysics
[SDV.EE.ECO]Life Sciences [q-bio]/Ecology
environment/Ecosystems
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Boundary value problem
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology
020701 environmental engineering
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
0105 earth and related environmental sciences
Water Science and Technology
Computer simulation
[SDE.IE]Environmental Sciences/Environmental Engineering
Piezometer
[SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment
Critical zone
Geophysics
[SDE.ES]Environmental Sciences/Environmental and Society
6. Clean water
13. Climate action
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology
[SHS.ENVIR]Humanities and Social Sciences/Environmental studies
Orgeval
[PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph]
[SHS.GESTION]Humanities and Social Sciences/Business administration
Hydrology
[SDV.EE.BIO]Life Sciences [q-bio]/Ecology
environment/Bioclimatology
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
River Corridor
Geology
Groundwater
Zdroj: Water Resources Research
Water Resources Research, American Geophysical Union, 2021, 57 (10), ⟨10.1029/2020WR028911⟩
ISSN: 0043-1397
1944-7973
Popis: International audience; A new hydrogeophysical approach was developed to reveal the spatial and temporal dynamic flow pathways inside a river corridor as well as the pattern of transient surface water and the groundwater (SW-GW) exchanges. Obtaining such information from traditional hydrological data remains a challenge, both in terms of accuracy and validation. As there is no direct measurement of these fluxes, estimating dynamic pathways and SW-GW exchanges is frequently tackled with the help of numerical models. Yet, the definition of initial and boundary conditions is generally based on poorly constrained assumptions and restrained to the location of piezometers, due to the lack of knowledge of the water table (WT) geometry. We provide a methodology to build stronger constraints to the numerical simulation and the hydrodynamic parameters calibration, both in space and time, by using a multi-method approach. On the Orgeval Critical Zone observatory (France), we show how a thorough interpretation of high-resolution geophysical images, combined with geotechnical data, helps to resolve subsurface structural heterogeneity. This coupling provides a detailed distribution of hydrofacies, valuable prior information about the associated hydrodynamic properties distribution. The temporal dynamic of the WT table can be locally captured with high-resolution time-lapse seismic acquisitions. Time-lapse variations are interpreted as temporal changes in the saturated-unsaturated zone continuum. Each seismic snapshot is then thoroughly inverted to image spatial WT variations. This posterior geophysical information is then used to calibrate the hydrogeological modeling domain. The use of the WT improves the estimation of transient stream-aquifer exchanges, especially during the rain event.
Databáze: OpenAIRE
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