Saresma, Maarit; Virtasalo, Joonas J (2025): Free fall cone penetrometer shear strength measurements of fine-grained sediments from the Finnish coastal sea areas [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.974513
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Published: 2025-01-17 • DOI registered: 2025-02-15
Abstract:
This dataset contains undrained shear strength profiles of soft seabed sediment layers that were measured in-situ with a free fall cone penetrometer (FF-CPT) in sea areas off Espoo and Pori (2023) in Finland. The FF-CPT used was a dotOcean Graviprobe 2.0 (length 1.97 m, weight 20.2 kg, diameter 5 cm, 60° cone with diameter of 5 cm and length 2,1 cm) and it was deployed from the r/v Geomari of the Geological Survey of Finland (GTK). The instrument has an accelerometer, inclinometer, and pressure sensor, which produce data for a dynamic model, from which the undrained shear strength is derived at 1 cm depth intervals using the accelerometer method (Bezuijen et al., 2018; doi:10.1201/9780429438660-37). Static shear strength is derived from dynamic shear strength using static beta as indicated in the data column. Vertical penetration in the fine-grained seabed sediments was typically 2-3 m. Typically, 3-4 drops were performed at each test site.
Related to:
Saresma, Maarit; White, David J; Mohapatra, Debasis; Mohammadi, Saeideh; Sołowski, Wojciech; Korkiala-Tanttu, Leena; Virtasalo, Joonas J; Gourvenec, Susan (2025): Assessment of near-surface undrained shear strength of soft seabeds with free fall cone penetrometer testing in the northern Baltic Sea. Engineering Geology, 346, 107906, https://doi.org/10.1016/j.enggeo.2025.107906
Funding:
Coverage:
Median Latitude: 60.721249 * Median Longitude: 23.198095 * South-bound Latitude: 60.001910 * West-bound Longitude: 20.975660 * North-bound Latitude: 61.698580 * East-bound Longitude: 24.754150
Date/Time Start: 2023-04-27T00:00:00 * Date/Time End: 2023-11-02T00:00:00
Event(s):
1_1_1683636392500 * Latitude: 60.035630 * Longitude: 24.702990 * Date/Time: 2023-05-09T00:00:00 * Location: Baltic Sea, Gulf of Finland * Campaign: Kytö * Basis: Geomari * Method/Device: Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Saresma, Maarit | |||
| 2 | Latitude of event | Latitude | Saresma, Maarit | |||
| 3 | Longitude of event | Longitude | Saresma, Maarit | |||
| 4 | Date/Time of event | Date/Time | Saresma, Maarit | |||
| 5 | Area/locality | Area | Saresma, Maarit | |||
| 6 | Free fall penetration depth, water and sediment | Penetr depth w+s | m | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | |
| 7 | Acceleration | Acc | m/s2 | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | |
| 8 | Velocity, shear wave | Vs | m/s | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | |
| 9 | Velocity, shear wave | Vs | m/s | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | Simulated |
| 10 | Penetration resistance | Pen resist | kPa | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | |
| 11 | Shear strength, undrained | CU | kPa | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | Dynamic |
| 12 | Shear strength | Shear str | kPa | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 | Static |
| 13 | Static beta | Static beta | Saresma, Maarit | Free fall cone penetrometer (FF-CPT), dotOcean, GraviProbe 2.0 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1244718 data points
Download Data
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