Hydrogeological Changes along a Fault Zone Caused by Earthquakes in the Moncayo Massif (Iberian Chain, Spain)

The response of springs to earthquakes in the zone of moderate seismicity associated with the fault under study (the Talamantes–Castilruiz fault, Soria, Spain) always leads to a flow decrease regardless of the magnitude of the earthquake and the distance from the epicenter. The sensitivity of the sp...

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Bibliographic Details
Published in:Sustainability 2020-11, Vol.12 (21), p.9034
Main Authors: Sanz, Eugenio, Menéndez Pidal, Ignacio, Escavy, José Ignacio, Ojeda, Joaquin Sanz de
Format: Article
Language:English
Subjects:
Aquifers
Confined aquifers
Earthquakes
Elastic deformation
Fault lines
Faults
Geology
Groundwater
Hydrogeology
Massifs
Permeability
Power plants
Seismic activity
Seismic response
Seismicity
Springs (elastic)
Sustainability
Turbidity
Water springs
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Summary:The response of springs to earthquakes in the zone of moderate seismicity associated with the fault under study (the Talamantes–Castilruiz fault, Soria, Spain) always leads to a flow decrease regardless of the magnitude of the earthquake and the distance from the epicenter. The sensitivity of the springs is explained by the different degrees of the confinement of their aquifers. The semi-confined aquifer of the Vozmediano spring (1100 L/s) experiences short post-seismic events with a variable decrease in flow and an increase in turbidity, depending on the intensity of the earthquakes felt at the site (Intensity). These changes are likely due to elastic deformation and an increased permeability in their aquifers. This spring is an example of how previous (historical) earthquakes can break the aquifer through the fault causing horizontal movements of the groundwater and displacing the discharge point to a different fracture site located six kilometers from the initial point.
ISSN:2071-1050
2071-1050
DOI:10.3390/su12219034