Antonova, Sofia; Sudhaus, Henriette; Strozzi, Tazio; Zwieback, Simon; Kääb, Andreas; Heim, Birgit; Langer, Moritz; Bornemann, Niko; Boike, Julia (2018): In situ measurements of freeze/thaw ground displacement in the Lena River Delta, 2013-2017, using steel pipes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.894715, In supplement to: Antonova, S et al. (2018): Thaw subsidence of a yedoma landscape in Northern Siberia, measured in situ and estimated from TerraSAR-X interferometry. Remote Sensing, 10(4), 494, https://doi.org/10.3390/rs10040494
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Abstract:
In permafrost areas, seasonal freeze-thaw cycles of active layer result in upward and downward movements of the ground. Additionally, relatively uniform thawing of the ice-rich layer at the permafrost table can contribute to net long-term surface lowering. We use a simple method to quantify surface lowering (subsidence) and uplift in a yedoma area of the Lena River Delta, Siberian Arctic (Kurungnakh Island), using reference rods (metal pipes and fiberglass rods) installed deeply in permafrost. The metal pipes were 2 m long and 3 cm in diameter and were anchored at least 1 m below the typical active layer. The fiberglass rods were 2 m long and 1 cm in diameter and were anchored at least 70 m below the typical active layer. We assume, therefore, that the rods were motionless relative to the permafrost. The plexiglass plate with a size of 10 by 10 cm was fixed in its horizontal position by the rod but could move freely with the surface vertically along the rod. We repeatedly measured distance between the top of a rod and a plexiglass plate resting on the ground surface. Several distance measurements around each rod were taken at each visit and averaged. Altogether 12 metal pipes were installed at the study site in April 2013 and 19 fiberglass rods were installed in April 2014. Measurements were conducted during field campaigns from spring 2013 to summer 2017 with some gaps. We provide here the measured distances between the top of a rod and a plexiglass plate. To obtain the ground displacement, the user have to define the period of interest and calculate the displacement.
Further details:
Project(s):
Permafrost Research (AWI_Perma)
Permafrost Research (Periglacial Dynamics) @ AWI (AWI_PerDyn)
Coverage:
Median Latitude: 72.332908 * Median Longitude: 126.196950 * South-bound Latitude: 72.291400 * West-bound Longitude: 126.154400 * North-bound Latitude: 72.376200 * East-bound Longitude: 126.265000
Date/Time Start: 2013-04-25T00:00:00 * Date/Time End: 2017-09-15T00:00:00
Minimum DISTANCE: 18.5 cm * Maximum DISTANCE: 51.9 cm
Event(s):
Kurungnakh_4 (4) * Latitude: 72.345000 * Longitude: 126.173100 * Date/Time Start: 2013-04-22T00:00:00 * Date/Time End: 2017-09-15T00:00:00 * Location: Kurungnakh Island, Lena Delta, Siberia * Method/Device: Sampling/measurement on land (LAND) * Comment: Steel pipe
Comment:
Measurements are the distances between the ground surface and the top of the metal pipe, in cm. To obtain the displacement, you need to subtract the measurement on a certain date from the reference measurement (e.g. from the very first one).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Antonova, Sofia | |||
| 2 | Station label | Station | Antonova, Sofia | |||
| 3 | DATE/TIME | Date/Time | Antonova, Sofia | Geocode | ||
| 4 | DISTANCE | Distance | cm | Antonova, Sofia | Geocode |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
118 data points