Decoupling Hydroclimatic Controls on Displacement of Retrogressive Thaw Slumps in Qinghai‐Tibet Plateau

Abstract The retrogressive thaw slumps (RTS), a prevalent form of thermokarst hazard in permafrost regions, are increasing in both number and extent under contemporary changing environments. On the Qinghai‐Tibet Plateau, RTS threaten transportation infrastructure and disrupt ecosystems. However, the combined influence of hydroclimatic drivers on RTS subsidence remains poorly understood. We therefore examine the relationship between surface displacement and precipitation under varying land surface temperature (LST) conditions in Beiluhe region. Our findings reveal an average seasonal displacement amplitude of 27 mm and a mean annual subsidence of 12–19 mm across RTS. When LST remains below approximately 0°C, faster annual subsidence is linked to drier years. In contrast, when LST exceeds 0°C, faster subsidence is associated with wetter years. These results provide new insights into the coupled dynamics of surface displacement, precipitation, and LST in RTS subsidence, enhancing our understanding of permafrost degradation processes amid climate crisis.