Skip to Main content Skip to Navigation

Welcome to the Resources Reservoirs and Hydrosystems Group collection

Number of resources

368

 

Number of fulltexts

314

 

Twitter

Chargement de la page

 

Keywords

Chargement de la page

 

Latest submissions in HAL !

[hal-01766748] New insights into the Kawah Ijen hydrothermal system from geophysical data

(24/09/2022)  
The magmatic–hydrothermal system of Kawah Ijen volcano is one of the most exotic on Earth, featuring the largest acidic lake on the planet, a hyper-acidic river and a passively degassing silicic dome. While previous studies have mostly described this unique system from a geochemical perspective, to date there has been no comprehensive geophysical investigation of the system. In our study, we surveyed the lake using a thermocouple, a thermal camera, an echo sounderand CO2 sensors. Furthermore, we gained insights into the hydrogeological structures by combining self-potential surveys with ground and water temperatures. Our results show that the hydrothermal system is self-sealed within the upper edifice and releases pressurized gas only through the active crater. We also show that the extensive hydrological system is formed by not one but three aquifers: a south aquifer that seems to be completely isolated, a west aquifer that sustains the acidic upper springs, and an east aquifer that is the main source of fresh water for the lake. In contrast with previous research, we emphasize the heterogeneity of the acidic lake, illustrated by intense subaqueous degassing. These findings provide new insights into this unique, hazardous hydrothermal system, which may eventually improve the existing monitoring system.

[hal-03779685] Characterization of the isotopic signature of effective rainfall (δ 18 O, δ 2 H) to constrain the groundwater recharge zones in a Mediterranean karst aquifer

(21/09/2022)  

[hal-03779651] Deep flooded karst of south-eastern France – Genesis and hydrodynamic functioning

(19/09/2022)  

 

Contact

Catherine Beaussier
Tél. (+33) 4 95 04 41 43
catherine.beaussier@osupytheas.fr

Archive créée et administrée sur la plateforme HAL du CCSD
 

Legal aspects : Contributor obligations


Dépôt de fichier : que faire en fonction de la version que vous déposez

Sherpa/Romeo

 

Domain

 

 

Evolution of the submissions

 

 

 

 

INTERNATIONAL COLLABORATIONS