Research Article
Aquifer Vulnerability: Its Protection and Management—A Case Study in Pangkalpinang City, Indonesia
Table 7
Summary of vertical electrical sounding inversion result.
(a) |
| | Layer resistivity | | VES no. | Longitude | Latitude | Elevation | Layer resistivity (Ωm) | | | | | | | | |
| | VES01 | 106.14838 | -2.15645 | 27 | 100.7 | 571.4 | 102.8 | 485.5 | 640.0 | 843.7 | 1021.0 | — | | VES02 | 106.1504 | -2.15022 | 19 | 95.8 | 381.5 | 119.4 | 287.4 | 506.6 | 682.1 | 924.4 | — | | VES03 | 106.1516 | -2.09369 | 5 | 161.9 | 555.4 | 218.0 | 575.5 | 938.2 | 1120.0 | 1272.0 | — | | VES04 | 106.15449 | -2.08859 | 5 | 208.9 | 510.2 | 373.5 | 791.5 | 1152.0 | 1435.0 | — | — | | VES05 | 106.1099 | -2.08594 | 10 | 458.7 | 1043.0 | 348.0 | 808.5 | 1128.0 | 1211.0 | 1318.0 | 1405.0 | | VES06 | 106.09727 | -2.09166 | 14 | 506.6 | 993.0 | 475.3 | 1073.0 | 1254.0 | 1347.0 | 1254.0 | 1477.0 | | VES07 | 106.10197 | -2.1519 | 18 | 244.9 | 623.0 | 189.2 | 504.0 | 415.4 | 1219.0 | 1654.0 | 1909.0 | | VES08 | 106.09798 | -2.14466 | 19 | 213.4 | 716.8 | 234.0 | 506.6 | 468.6 | 1185.0 | 1574.0 | 1988.0 |
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(b) |
| | Layer thickness | | VES no. | Longitude | Latitude | Elevation | Layer thickness (m) | | | | | | | | |
| | VES01 | 106.14838 | -2.15645 | 27 | 4.0 | 6.1 | 14.9 | 25.0 | 23.2 | 56.8 | 120.0 | — | | VES02 | 106.1504 | -2.15022 | 19 | 4.2 | 7.8 | 14.0 | 19.0 | 30.0 | 50.0 | 125.0 | — | | VES03 | 106.1516 | -2.09369 | 5 | 4.0 | 5.0 | 13.0 | 28.0 | 45.0 | 55.0 | 100.0 | — | | VES04 | 106.15449 | -2.08859 | 5 | 3.0 | 7.0 | 15.5 | 38.2 | 16.3 | 40.0 | — | — | | VES05 | 106.1099 | -2.08594 | 10 | 4.5 | 6.5 | 15.5 | 38.5 | 25.0 | 45.0 | 135.0 | 70.0 | | VES06 | 106.09727 | -2.09166 | 14 | 5.0 | 5.5 | 14.5 | 30.0 | 30.0 | 40.0 | 25.0 | 100.0 | | VES07 | 106.10197 | -2.1519 | 18 | 2.0 | 3.0 | 6.0 | 15.0 | 54.0 | 45.0 | 50.0 | 75.0 | | VES08 | 106.09798 | -2.14466 | 19 | 4.0 | 5.0 | 16.0 | 20.0 | 25.0 | 45.0 | 50.0 | 85.0 |
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(c) |
| | Interpreted lithology | | VES no. | Longitude | Latitude | Elevation | Interpreted lithology | | Layer 1 | Layer 2 | Layer 3 | Layer 4 | Layer 5 | Layer 6 | Layer 7 | Layer 8 |
| | VES01 | 106.14838 | -2.15645 | 27 | Trt | | | | | | CPp | — | | VES02 | 106.1504 | -2.15022 | 19 | Trt | | | | | | CPp | — | | VES03 | 106.1516 | -2.09369 | 5 | Trt | | | | | | CPp | — | | VES04 | 106.15449 | -2.08859 | 5 | Trt | | | | | CPp | — | — | | VES05 | 106.1099 | -2.08594 | 10 | Qa | | Trt | | | | CPp | | | VES06 | 106.09727 | -2.09166 | 14 | Trt | | | | | | CPp | | | VES07 | 106.10197 | -2.1519 | 18 | Qa | | Trt | | | | CPp | | | VES08 | 106.09798 | -2.14466 | 19 | Qa | | Trt | | | | CPp | |
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Legend: Qa: Silty sand (alluvium Fm); Trt: sandstone (Tanjunggenting Fm.); CPp: schist (Pemali Complex Fm.).
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