Gorczyńska, Aneta; Stéphan, Pierre; David, Ophélie; Stephan, Gillian; Le Gall, Bernard; Pailler, Yvan; Vidal, Muriel (2025): Terrestrial Electrical Resistivity Tomography (ERT) profile surveys acquired in the Trunvel and Kerallé valleys, Brittany, North-West France [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.983365
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Published: 2025-10-14 • DOI registered: 2025-11-12
Abstract:
This dataset contains eight terrestrial Electrical Resistivity Tomography (ERT) profiles, collected between May 2017 and April 2018 in the Trunvel and Kerallé valleys, Brittany, North-West France. The measurements were acquired as part of the doctoral project "Paleogeographic changes and coastal archaeological remains in Brittany during the Middle and Late Holocene: Contributions of a multidisciplinary and multi-scaled approach, with the aim of reconstructing the Holocene evolution of small estuarine systems on the North-West French coast".
The 2D subsurface profiles were obtained using a Terrameter LS 2 (ABEM) with an array of 64 electrodes and a Wenner array protocol. A computer inversion program (Res2Dinv), which incorporates topography and generates images of the resistivity distribution, was used. ERT profiles were conducted with an electrode spacing ranging from 1 m to 2 m. Each electrode was precisely leveled using a TopCon HyperV Differential GPS, and local French ordnance datum (Nivellement Général de la France) geodetic benchmarks were used as references.
The objective of this study was to identify the depth and geometry of Holocene sedimentary deposits. This dataset contains raw data, inversion results, and the geographical coordinates of each electrode.
Funding:
Agence Nationale de la Recherche (ANR), grant/award no. ANR-21-CE27-0024: Geoarchaeology and Prehistory of Atlantic Societies (GEOPRAS)
Coverage:
Median Latitude: 48.275834 * Median Longitude: -4.252035 * South-bound Latitude: 47.901085 * West-bound Longitude: -4.329652 * North-bound Latitude: 48.650662 * East-bound Longitude: -4.172358
Date/Time Start: 2017-05-15T00:00:00 * Date/Time End: 2018-04-20T00:00:00
Event(s):
ERT_ANE_C1 * Latitude Start: 48.649163 * Longitude Start: -4.189665 * Latitude End: 48.650662 * Longitude End: -4.188430 * Date/Time Start: 2017-05-15T00:00:00 * Date/Time End: 2017-06-23T00:00:00 * Location: Bay of Kernic, Plouescat, France * Campaign: VAREC_2017 * Basis: Sampling on land * Method/Device: Resistivity and time-domain induced polarization (IP) surveying instrument, ABEM, Terrameter LS 2 * Comment: Configuration: Wenner, 64 electrodes; Length: 190 m; Electrode spacing: 2 m
ERT_ANE_C2 * Latitude Start: 48.645254 * Longitude Start: -4.182837 * Latitude End: 48.645479 * Longitude End: -4.181864 * Date/Time Start: 2018-04-16T00:00:00 * Date/Time End: 2018-04-20T00:00:00 * Location: Bay of Kernic, Plouescat, France * Campaign: VAREC_2018 * Basis: Sampling on land * Method/Device: Resistivity and time-domain induced polarization (IP) surveying instrument, ABEM, Terrameter LS 2 * Comment: Configuration: Wenner, 64 electrodes; Length: 75.6 m; Electrode spacing: 1.2 m
ERT_ANE_C3 * Latitude Start: 48.648946 * Longitude Start: -4.172358 * Latitude End: 48.648151 * Longitude End: -4.172811 * Date/Time Start: 2018-04-16T00:00:00 * Date/Time End: 2018-04-20T00:00:00 * Location: Bay of Kernic, Plouescat, France * Campaign: VAREC_2018 * Basis: Sampling on land * Method/Device: Resistivity and time-domain induced polarization (IP) surveying instrument, ABEM, Terrameter LS 2 * Comment: Configuration: Wenner, 64 electrodes; Length: 94.5 m; Electrode spacing: 1.5 m
Comment:
This dataset contains raw data and processed data from electrical resistivity surveys. Files are in .dat, .txt, .INV, .csv, and .bmp formats for all available data. The Metadata file describes all files.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Gorczyńska, Aneta | |||
| 2 | LATITUDE | Latitude | Gorczyńska, Aneta | Geocode – Latitude of the first electrode (WGS 84) | ||
| 3 | LONGITUDE | Longitude | Gorczyńska, Aneta | Geocode – Longitude of the first electrode (WGS 84) | ||
| 4 | LATITUDE | Latitude | Gorczyńska, Aneta | Geocode – Latitude of the last electrode (WGS 84) | ||
| 5 | LONGITUDE | Longitude | Gorczyńska, Aneta | Geocode – Longitude of the last electrode (WGS 84) | ||
| 6 | Data type | Data type | Gorczyńska, Aneta | |||
| 7 | Processing level | Proc level | Gorczyńska, Aneta | Data Level | ||
| 8 | Binary Object | Binary | Gorczyńska, Aneta | |||
| 9 | Binary Object (File Size) | Binary (Size) | Bytes | Gorczyńska, Aneta | ||
| 10 | Comment | Comment | Gorczyńska, Aneta |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
224 data points
Data
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| 1 Event | 2 Latitude (Latitude of the first electro...) | 3 Longitude (Longitude of the first electr...) | 4 Latitude (Latitude of the last electrod...) | 5 Longitude (Longitude of the last electro...) | 6 Data type | 7 Proc level (Data Level) | 8 Binary | 9 Binary (Size) [Bytes] | 10 Comment |
|---|---|---|---|---|---|---|---|---|---|
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | Electrical Resistivity Tomography | raw data | ERT_TRU_C1_raw_data.dat | 52.5 kBytes | including topographic data |
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | Electrical Resistivity Tomography | raw data | ERT_TRU_C1_raw_data.txt | 52.5 kBytes | including topographic data |
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C1_inv_data.INV | 1 MBytes | including topographic data |
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C1_inv_data.txt | 1 MBytes | including topographic data |
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | electrodes locations | processed data | ERT_TRU_C1_topo.csv | 2.9 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | electrodes locations | processed data | ERT_TRU_C1_topo.txt | 2.9 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C1 | 47.9018742 | -4.3296519 | 47.9010853 | -4.3291650 | inversion results displayed on a logarithmic scale | processed data | ERT_TRU_C1_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | Electrical Resistivity Tomography | raw data | ERT_TRU_C2_raw_data.dat | 52.4 kBytes | including topographic data |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | Electrical Resistivity Tomography | raw data | ERT_TRU_C2_raw_data.txt | 52.4 kBytes | including topographic data |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C2_inv_data.INV | 1 MBytes | including topographic data |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C2_inv_data.txt | 1 MBytes | including topographic data |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | electrodes locations | processed data | ERT_TRU_C2_topo.csv | 3 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | electrodes locations | processed data | ERT_TRU_C2_topo.txt | 3 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C2 | 47.9037871 | -4.3267142 | 47.9030074 | -4.3261899 | inversion results displayed on a logarithmic scale | processed data | ERT_TRU_C2_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | Electrical Resistivity Tomography | raw data | ERT_TRU_C3_raw_data.dat | 52.1 kBytes | including topographic data |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | Electrical Resistivity Tomography | raw data | ERT_TRU_C3_raw_data.txt | 52.1 kBytes | including topographic data |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C3_inv_data.INV | 1 MBytes | including topographic data |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C3_inv_data.txt | 1 MBytes | including topographic data |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | electrodes locations | processed data | ERT_TRU_C3_topo.csv | 2.9 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | electrodes locations | processed data | ERT_TRU_C3_topo.txt | 2.9 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C3 | 47.9094914 | -4.3169377 | 47.9087330 | -4.3163507 | inversion results displayed on a logarithmic scale | processed data | ERT_TRU_C3_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | Electrical Resistivity Tomography | raw data | ERT_TRU_C4_raw_data.dat | 57.1 kBytes | including topographic data |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | Electrical Resistivity Tomography | raw data | ERT_TRU_C4_raw_data.txt | 57.1 kBytes | including topographic data |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C4_inv_data.INV | 604.7 kBytes | including topographic data |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | Electrical Resistivity Tomography, inversion result | processed data | ERT_TRU_C4_inv_data.txt | 604.7 kBytes | including topographic data |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | electrodes locations | processed data | ERT_TRU_C4_topo.csv | 2 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | electrodes locations | processed data | ERT_TRU_C4_topo.txt | 2 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_TRU_C4 | 47.9079078 | -4.3202781 | 47.9074449 | -4.3194251 | inversion results displayed on a logarithmic scale | processed data | ERT_TRU_C4_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | Electrical Resistivity Tomography | raw data | ERT_ANE_C1_raw_data.dat | 55.1 kBytes | including topographic data |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | Electrical Resistivity Tomography | raw data | ERT_ANE_C1_raw_data.txt | 55.1 kBytes | including topographic data |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C1_inv_data.INV | 904.4 kBytes | including topographic data |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C1_inv_data.txt | 904.4 kBytes | including topographic data |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | electrodes locations | processed data | ERT_ANE_C1_topo.csv | 3 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | electrodes locations | processed data | ERT_ANE_C1_topo.txt | 3 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C1 | 48.6491633 | -4.1896653 | 48.6506623 | -4.1884305 | inversion results displayed on a logarithmic scale | processed data | ERT_ANE_C1_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | Electrical Resistivity Tomography | raw data | ERT_ANE_C2_raw_data.dat | 30.7 kBytes | including topographic data |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | Electrical Resistivity Tomography | raw data | ERT_ANE_C2_raw_data.txt | 30.7 kBytes | including topographic data |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C2_inv_data.INV | 684.3 kBytes | including topographic data |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C2_inv_data.txt | 684.3 kBytes | including topographic data |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | electrodes locations | processed data | ERT_ANE_C2_topo.csv | 2 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | electrodes locations | processed data | ERT_ANE_C2_topo.txt | 2 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C2 | 48.6452543 | -4.1828368 | 48.6454785 | -4.1818640 | inversion results displayed on a logarithmic scale | processed data | ERT_ANE_C2_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | Electrical Resistivity Tomography | raw data | ERT_ANE_C3_raw_data.dat | 30.8 kBytes | including topographic data |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | Electrical Resistivity Tomography | raw data | ERT_ANE_C3_raw_data.txt | 30.8 kBytes | including topographic data |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C3_inv_data.INV | 605.5 kBytes | including topographic data |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C3_inv_data.txt | 605.5 kBytes | including topographic data |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | electrodes locations | processed data | ERT_ANE_C3_topo.csv | 2.1 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | electrodes locations | processed data | ERT_ANE_C3_topo.txt | 2.1 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C3 | 48.6489457 | -4.1723584 | 48.6481512 | -4.1728111 | inversion results displayed on a logarithmic scale | processed data | ERT_ANE_C3_log_scale.bmp | 7.3 MBytes | including topographic data |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | Electrical Resistivity Tomography | raw data | ERT_ANE_C4_raw_data.dat | 30.3 kBytes | including topographic data |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | Electrical Resistivity Tomography | raw data | ERT_ANE_C4_raw_data.txt | 30.3 kBytes | including topographic data |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C4_inv_data.INV | 605.4 kBytes | including topographic data |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | Electrical Resistivity Tomography, inversion result | processed data | ERT_ANE_C4_inv_data.txt | 605.4 kBytes | including topographic data |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | electrodes locations | processed data | ERT_ANE_C4_topo.csv | 2 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | electrodes locations | processed data | ERT_ANE_C4_topo.txt | 2 kBytes | latitude and longitude are in WGS84, altitude is in NGF - IGN69 (General levelling of France) |
| ERT_ANE_C4 | 48.6409083 | -4.1797048 | 48.6414472 | -4.1801768 | inversion results displayed on a logarithmic scale | processed data | ERT_ANE_C4_log_scale.bmp | 7.3 MBytes | including topographic data |