Combined continuous electrical tomography and very high resolution seismic surveys to assess continental and marine groundwater mixing
| Autor: | Tosi, L., Baradello, L., Teatini, P., Zecchin, M., Bonardi, M., Shi, P., Tang, C., Li, F., Brancolini, G., Chen, Q., Chiozzotto, B., Frankenfield, J., Giada, M., Liu, D., Nieto, D., Rizzetto, F., Sheng, Y., Xiao, Y., Zhou, D. |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Bollettino di geofisica teorica ed applicata (Testo stamp.) 52 (2011): 585–594. doi:10.4430/bgta0024 info:cnr-pdr/source/autori:TOSI L; BARADELLO L; TEATINI P; ZECCHIN M; BONARDI M; SHI P; TANG C; LI F; BRANCOLINI G; CHEN Q; CHIOZZOTTO B; FRANKENFIELD J; GIADA M; LIU D; NIETO D; RIZZETTO F; SHENG Y; XIAO Y; ZHOU D/titolo:Combined continuous electrical tomography and very high resolution seismic surveys to assess continental and marine groundwater mixing/doi:10.4430%2Fbgta0024/rivista:Bollettino di geofisica teorica ed applicata (Testo stamp.)/anno:2011/pagina_da:585/pagina_a:594/intervallo_pagine:585–594/volume:52 |
| DOI: | 10.4430/bgta0024 |
| Popis: | Salt contamination in the coastlands surrounding Venice Lagoon (Italy) and Laizhou Bay (Shandong Province, China) is generally the result of the complex relationship between fresh, continental groundwaters, paleo-saltwaters in deep aquifers, marine waters, and the seawater encroachment upstream from the river mouths. Saltwater intrusion is also enhanced by the presence of ancient, sandy, buried paleo-channels that act as preferential pathways for groundwater flow and solute transport. The characterization of these hydro-geo-morphological features, considering both the architecture and the pore water quality, is an issue of paramount importance. In this work, after a short overview of the saltwater contamination occurrence that affects the coastlands of Venice Lagoon and Laizhou Bay, we report on the preliminary results of a Very High Resolution Seismic and Continuous Electrical Tomography test carried out in very shallow water (about 1 m) in the Venice Lagoon to test a technique suitable for the better understanding of the surficial-groundwater mixing process. The combined analysis of the two data sets highlights a correlation between lithostratigraphic discontinuities and heterogeneity in the fluid filling the subsurface. The promising results obtained in the Italian site support a prompt use of this integrated methodology on the Chinese study area too. |
| Databáze: | OpenAIRE |
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