Annual dynamics of rapid permafrost disturbances in Northeast Siberia ...

Permafrost is warming globally which leads to widespread permafrost thaw. Particularly ice-rich permafrost is vulnerable to rapid thaw and erosion, impacting whole landscapes and ecosystems. Abrupt permafrost disturbances, such as retrogressive thaw slumps (RTS), expand by several meters each year a...

Full description

Bibliographic Details
Main Authors: Runge, Alexandra, Nitze, Ingmar, Grosse, Guido
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Landsat
Permafrost
permafrost disturbance
permafrost thaw
Retrogressive Thaw Slumps
Sentinel-2
Time series
ORDINAL NUMBER
Identification
Description
LONGITUDE
LATITUDE
Time coverage
Number of years
Number of pixels
Area in hectare
Permafrost area, retrogressive thaw slump affected
Sampling/measurement on land
Carbon in Permafrost / Kohlenstoff im Permafrost KoPF
CCI Permafrost ESA_CCI_Permafrost_CCN2
ESA Data User Element - GlobPermafrost ESA-DUE-GlobPermafrost
Ice
permafrost
Siberia
Online Access:https://dx.doi.org/10.1594/pangaea.941479
https://doi.pangaea.de/10.1594/PANGAEA.941479
Description
Summary:Permafrost is warming globally which leads to widespread permafrost thaw. Particularly ice-rich permafrost is vulnerable to rapid thaw and erosion, impacting whole landscapes and ecosystems. Abrupt permafrost disturbances, such as retrogressive thaw slumps (RTS), expand by several meters each year and lead to an increased soil organic carbon release. We applied the disturbance detection algorithm LandTrendr for automated large-scale RTS mapping and high temporal thaw dynamic assessment to Northeast Siberia (8.1 × 10^6km^2). We adapted and parametrised the temporal segmentation algorithm for abrupt disturbance detection to incorporate Landsat+Sentinel-2 mosaics, conducted spectral filtering, spatial masking and filtering, and a binary machine-learning object classification of the disturbance output to separate between RTS and false positives (F1 score: 0.61). Ground truth data for calibration and validation of the workflow was collected from 9 known RTS cluster sites using very high-resolution RapidEye and ...

Similar Items