Reshaping of the active layer by retrogressive thaw slump in permafrost regions: coupled soil structural, hydrological, and thermal responses based on high-resolution in situ observations - Zhongyang Zhang; Yibo Wang; Yingpu Liu; Yiran Tang; Hu Tao; Xinyu Chang; Zhanchao Hai; Zeyong Gao (Journal of Hydrology, 2026)