RT Journal Article
T1 Recent Pockmark activity in Lake Banyoles (NE Spain) severely affected by changes in climate and land use
A1 Serra, Teresa
A1 Morellón Marteles, Mario
A1 Soler, Marianna
A1 Valero-Garcés, Blas
A1 Anselmetti, Flavio S.
A1 Colomer, Jordi
AB Study regionTwo giant pockmarks in Lake Banyoles (NE Spain) have been surveyed over the last 35 years. The giant pockmark ‘B1’ has maintained an ‘eruptive’ mode with permanent groundwater discharge, whereas, the giant pockmark ‘B2’ has displayed alternating quiescent and eruptive phases.Study focusInterannual variability of lake-subsurface groundwater discharge in both pockmarks and the main lake aquifer level correlates with changes in the accumulated rainfall during the previous 10 months in the north-east of Spain. In the eruptive phase, the lutocline, marking the top of suspended sediments, is warmer than the ambient lake water and generates a turbid hydrothermal plume.New hydrological insights for the Region: Results show that the permanent hydrothermal plume at pockmark B1 is no longer penetrating the lake's background stratification due to the loss of plume buoyancy. The available data demonstrate that current climate change coupled with a depletion of groundwater resources has strongly impacted the hydrogeology and limnology of the main pockmark of the lake and also the distribution of suspended sediment in the water column.
PB Elsevier
SN 2214-5818
YR 2021
FD 2021-10
LK https://hdl.handle.net/20.500.14352/4509
UL https://hdl.handle.net/20.500.14352/4509
LA eng
DS Docta Complutense
RD 21 abr 2025