An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence
The internal structures of some surviving sand dunes and the ancient shore-lines along the coast south of Venice have been investigated integrating Ground Probing Radar (GPR) profiles, Vertical Electrical Soundings (VES) and water conductivity measurements in some boreholes. The GPR penetration dept...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
2000-06-01
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| Series: | Annals of Geophysics |
| Subjects: | |
| Online Access: | http://www.annalsofgeophysics.eu/index.php/annals/article/view/3643 |
| _version_ | 1819085764271538176 |
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| author | L. Tosi E. Finzi A. Galgaro |
| author_facet | L. Tosi E. Finzi A. Galgaro |
| author_sort | L. Tosi |
| collection | DOAJ |
| description | The internal structures of some surviving sand dunes and the ancient shore-lines along the coast south of Venice have been investigated integrating Ground Probing Radar (GPR) profiles, Vertical Electrical Soundings (VES) and water conductivity measurements in some boreholes. The GPR penetration depth has been limited (4-5 m,using a 400 MHz antenna) by the high conductivity of salt water saturating pores of the shallow sediments. On the other hand, the excellent spatial resolution of the radar survey provided an estimate of internal dune bedding features, such as cross lamination and forwarding ancient covered coast-lines dated in the Thirties. The interpretation of the data, in particular along one line 360 m long intercepting a sizable sand-dune bank, seems to offer clues to the evolutional history of the coast line and the depth of transition from fresh-water to brackish-salt water. The water table was detected with electrical measurements and direct observations in boreholes, whereas the transition between fresh and salt water (brackish water) was pointed out indirectly by the high energy absorption and total back-reflection of the EM waves, encountered at this boundary, and directly by the strong decrease in VES resistivity values. |
| first_indexed | 2024-12-21T21:09:32Z |
| format | Article |
| id | doaj.art-788a8c5a48384c849eb8c744d1e2823e |
| institution | Directory Open Access Journal |
| issn | 1593-5213 2037-416X |
| language | English |
| last_indexed | 2024-12-21T21:09:32Z |
| publishDate | 2000-06-01 |
| publisher | Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
| record_format | Article |
| series | Annals of Geophysics |
| spelling | doaj.art-788a8c5a48384c849eb8c744d1e2823e2022-12-21T18:50:11ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X2000-06-0143210.4401/ag-3643An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidenceL. TosiE. FinziA. GalgaroThe internal structures of some surviving sand dunes and the ancient shore-lines along the coast south of Venice have been investigated integrating Ground Probing Radar (GPR) profiles, Vertical Electrical Soundings (VES) and water conductivity measurements in some boreholes. The GPR penetration depth has been limited (4-5 m,using a 400 MHz antenna) by the high conductivity of salt water saturating pores of the shallow sediments. On the other hand, the excellent spatial resolution of the radar survey provided an estimate of internal dune bedding features, such as cross lamination and forwarding ancient covered coast-lines dated in the Thirties. The interpretation of the data, in particular along one line 360 m long intercepting a sizable sand-dune bank, seems to offer clues to the evolutional history of the coast line and the depth of transition from fresh-water to brackish-salt water. The water table was detected with electrical measurements and direct observations in boreholes, whereas the transition between fresh and salt water (brackish water) was pointed out indirectly by the high energy absorption and total back-reflection of the EM waves, encountered at this boundary, and directly by the strong decrease in VES resistivity values.http://www.annalsofgeophysics.eu/index.php/annals/article/view/3643GPR-coastal dunesgroundwatersalt-water intrusionlittoral evolution |
| spellingShingle | L. Tosi E. Finzi A. Galgaro An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence Annals of Geophysics GPR-coastal dunes groundwater salt-water intrusion littoral evolution |
| title | An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence |
| title_full | An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence |
| title_fullStr | An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence |
| title_full_unstemmed | An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence |
| title_short | An experiment on a sand-dune environment in Southern Venetian coast based on GPR, VES and documentary evidence |
| title_sort | experiment on a sand dune environment in southern venetian coast based on gpr ves and documentary evidence |
| topic | GPR-coastal dunes groundwater salt-water intrusion littoral evolution |
| url | http://www.annalsofgeophysics.eu/index.php/annals/article/view/3643 |
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