Extensive perched aquifer and structural implications revealed by 3D resistivity mapping in a Galapagos volcano

Earth and Planetary Science Letters

Volumn 269, Issue 3-4, 2008, Pages 518-522

  d'Ozouville, Noémi ^a   Auken, Esben ^b   Sorensen, Kurt ^b   Violette, Sophie ^a   de Marsily, Ghislain ^a   Deffontaines, Benoit ^c   Merlen, Godfrey ^d  

^a SORBONNE UNIVERSITÉ   (France)

^b AARHUS UNIVERSITY   (Denmark)

^c UNIVERSITÉ GUSTAVE EIFFEL   (France)

^d Galapagos National Park Service   (Ecuador)

Author keywords

geophysics; groundwater; landslide; transient electromagnetic

Indexed keywords

AQUIFERS; COMPUTER SIMULATION; GROUNDWATER; HYDROLOGY; LANDSLIDES; VOLCANOES; WATER RESOURCES;

BASAL AQUIFER; HYDROGEOLOGICAL CONCEPTUAL MODELS; SALT-WATER WEDGE;

GEOPHYSICS;

AQUIFER; ELECTRICAL RESISTIVITY; ELECTROMAGNETIC METHOD; FAULTING; GEOPHYSICAL METHOD; GROUNDWATER; HYDROGEOLOGY; LANDSLIDE; MAPPING METHOD; VOLCANIC ISLAND; VOLCANO;

ECUADOR; GALAPAGOS ISLANDS; MELANESIA; PACIFIC ISLANDS; PACIFIC OCEAN; SANTA CRUZ ISLANDS; SOLOMON ISLANDS [(ISG) MELANESIA]; SOLOMON ISLANDS [SOLOMON ISLANDS (ISG)]; SOUTH AMERICA;

EID: 43449106457     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.epsl.2008.03.011     Document Type: Article

References (35)

1. Adelinet, M., Fortin, J., d'Ozouville, N., Violette, S., 2008. The relationship between hydrodynamic properties and weathering of soils derived from volcanic rocks - Galapagos Islands (Ecuador). Environ. Geol. doi:10.1007/s00254-007-1138-3.
2. Albouy, Y., Andrieux, P., Rakotondrasoa, G., Ritz, M., Descloitres, M., Join, J.-L., Rsolomanano, E., 2001. Mapping coastal aquifers by joint inversion of DC and TEM sounding, three case histories. Groundwater 39, 87-97.
3. Auken, E., Christiansen, A.V., 2004. Layered and laterally constrained 2D inversion of resistivity data. Geophysics 69, 752-761.
4. Auken, E., Westergaard, J., Christiansen, A.V., Sørensen, K.I., 2007. Processing and inversion of SkyTEM data for high resolution hydrogeophysical surveys. Proceedings of the Australian Society of Exploration Geophysics meeting in Perth. 4p.
5. Bow, C.S.,1979. Geology and Petrogenesis of Lavas from Floreana and Santa Cruz Islands, Galapágos Archipelago. Ph.D. thesis Univ. Oreg.
6. Colinvaux, P.,1968. Reconnaissance and Chemistry of the Lakes and Bogs of the Galapagos Islands. Nature 219, 590-594.
7. Coudray, J., Mairine, P., Nicolini, E., Clerc, J.M.,1990. Approche hydrogéologique. In: Lénat, J.F. (Ed.), Le volcanisme de l'île de la Réunion, Centre de Recherches Volcanologiques, Clermont-Ferrand.
8. Cruz, V.J., França, Z., 2006. Hydrogeochemistry of thermal and mineral water springs of the Azores archipelago (Portugal). J. Volcanol. Geotherm. Res. 151, 382-398.
9. Custodio, E., 2005. Hydrogeology of volcanic rocks, in: Groundwater studies. An international guide for hydrogeological investigations, UNESCO (Eds), Paris.
10. Custodio, E., Lopez Garcia, L., Amigo, E., 1988. Simulation par modèle mathématique de l'Ile volcanique de Téné riffe, (Canaries, Espagne). Hydrogéol. 2, 153-167.
11. Descloitres, M., Ritz, M., Robineau, B., Courteaud, M., 1997. Electrical structure beneath the eastern collapsed flank of Piton de la Fournaise volcano, Reunion Island: implications for the quest of groundwater. Water Resour. Res. 33, 13-19.
12. d'Ozouville, N., Deffontaines, B., Benveniste, J.,Wegmuller, U., Violette, S., de Marsily, G., in press. DEM generation using ASAR (ENVISAT) for addressing the lack of freshwater ecosystems management, Santa Cruz Island, Galapagos. Remote Sensing of Environment on Monitoring Freshwater Ecosystems, special issue.
13. Fitterman, D.V., Labson, V.F., 2005. Electromagnetic induction methods for environmental problems. In: Butler, D.K. (Ed.), Near-surface Geophysics Part I. Society of Exploration Geophysicists, Tulsa.
14. Geist, D.J., White,W.M., Albarède, F., Harpp, K.S., Reynolds, R., Blichert-Toft, J., Kurz, M.D., 2002. Volcanic evolution in the Galapagos: the dissected shield of Volcano Ecuador. Geochem. Geophys. Geosyst. 3 (10), 1061. doi:10.1029/2002GC000355.
15. Hildenbrand, A., Marlin, C., Conroy, A., Gillot, P.-Y., Filly, A., Massault, M., 2005. Isotopic approach of rainfall and groundwater circulation in the volcanic structure of Tahiti- Nui (French Polynesia). J. Hydrol. 302, 187-208.
16. Hürlimann, M., Ledesma, A., Marti, J.,1999. Conditions favouring catastrophic landslides on Tenerife (Canary Islands). Terra Nova 11, 106-111.
17. Huttel, C., 1995. Vegetación en Coladas de Lava, Islas Galápagos, Ecuador. Fundación Charles Darwin (Eds), Quito.
18. INGALA, ORSTOM, PRONAREG, 1987. Inventario Cartográfico de los Recursos Naturales, Geomorfología, Vegetación, Hidricos, Ecológicos y Biofisicos de las Islas Galápagos Ecuador. Ingala Edition, Quito.
19. Join, J.-L., Folio, J.-L., Robineau, B., 2005. Aquifers and groundwater within active shield volcanoes. Evolution of conceptual models in the Piton de la Fournaise volcano. J. Volcanol. Geotherm. Res. 147, 187-201.
20. Jorgensen, F., Sandersen, P.B.E., Auken, E., 2003. Imaging buried Quaternary valleys using the transient electromagnetic method. J. Appl. Geophys. 53, 199-213.
21. Krivochieva, S., Chouteau, M., 2003. Integrating TDEM and MT methods for characterization and delineation of the Santa Catarina aquifer (Chalco Sub-Basin, Mexico). J. Appl. Geophys. 52, 23-43.
22. Lénat, J.F., Fitterman, D., Jackson, D.B., Labazuy, P., 2000. Geoelectrical structure of the central zone of Piton de la Fournaise volcano (Réunion). Bull. Volcanol. 62, 75-89.
23. Lienert, B.R., 1991. An electromagnetic study of Maui's last active volcano. Geophysics. 56, 972-982.
24. Malheiro, A., 2006. Geological hazards in the Azores archipelago: Volcanic terrain instability and human vulnerability. J. Volcanol. Geotherm. Res. 156, 158-171.
25. Nascimento Prada, S., Olivera da Silva, M., Cruz, V.J., 2006. Groundwater behaviour in Madeira, volcanic island (Portugal). Hydrogeol. J. 13, 800-812.
26. Naumann, T., Geist, D., 2000. Physical volcanology and structural development of Cerro Azul volcano, Isabela island, Galapagos: implications for the development of Galapagos-type shield volcanoes. Bull. Volcanol. 61, 497-514.
27. Palacky, P.J., 1988. Resistivity characteristics of geological targets. In: Nabighian, M.N. (Ed.), Electromagnetic methods in applied geophysics. Society of Exploration Geophysicists, Tulsa.
28. Peterson, F.L.,1972.Water development on tropic volcanic island. Type example: Hawaii. Groundwater 10, 18-23.
29. Snell, H., Rea, S., 1999. The 1997-1998 El Niño in Galapagos: can 34 years of data estimate 120 years of pattern? Noticias de Galápagos 60, 11-20.
30. Sørensen, K.I., Auken, E., 2004. SkyTEM - A new high-resolution helicopter transient electromagnetic system. Explor. Geophys. 35, 191-199.
31. Stieljes, L., 1988. Hydrogéologie de l'île volcanique océanique de Mayotte (archipel des Comores, océan indien occidental). Hydrogeol. 2, 135-152.
32. Vacher, H.L., 1988. Dupuit-Ghyben-Herzberg analysis of strip-island lenses. Geol. Soc. Amer. Bull. 100, 580-591.
33. Viezzoli, A., Christiansen, A.V., Auken, E., Soerensen, K.I., in press. Quasi-3D modeling of airborne TEM data by Spatially Constrained Inversion, Geophysics.
34. Violette, S., Ledoux, E., Goblet, P., Carbonnel, J.-P., 1995. Hydrologic and thermal modelling of an active volcano: the Piton de la Fournaise, La Réunion Island. J. Hydrol. 191, 37-63.
35. White, W.M., McBirney, A.R., Duncan, R.A., 1993. Petrology and geochemistry of the Galapagos: portrait of a pathologicalmantle plume. J. Geophys. Res. 93, 19533-19563.