%0 Dataset
%T 30m freeze-thaw disaster risk assessment map of the permafrost region in Northeast China (2023-2024)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/ce899e87-0dcb-435f-8cb7-a70ff209a932
%W NCDC
%R 10.12072/ncdc.nieer.db7264.2026
%A JIN Huijun
%A Tang Jianjun
%A Wang Wenhui
%A Jin Xiaoying
%A Li Shanzhen
%A Huang Shuai
%A Chen Dun
%A WANG Hongwei
%A Yangsui Bridge
%A Li Zuwang
%A Soaring Swallows
%A Cheng Yaohui
%A Li Jingtao
%A Zhang Ze
%A Wang Lifeng
%A Zhang Hu
%A Liu Mengxin
%A Zhang Shengrong
%A Yang Xue
%A Liu Zirui
%A Yue Ziying
%A Wu Haibin
%A Xing Luning
%A Chen Siyu
%A Xu Jingyan
%A He Zhengyun
%A Mi Hongqi
%A Peng Wenhao
%A Liang Junhe
%A Shi Yanling
%A Zhou Zhiyi
%K Risk assessment of freeze-thaw disasters;instability index;linear engineering;China Russia crude oil pipeline;spatial pattern
%X Unlike the current distribution map, this data constructs a machine learning comprehensive evaluation model that integrates "measured disaster disturbance information" and "potential environmental risk factors", achieving quantitative risk zoning for uninspected road sections and potential high-risk areas. The data is characterized by an instability index (0.0-1.0) to indicate the degree of risk, revealing the spatial coupling relationship between the thermal stability of permafrost, topographical and hydrological conditions, and human engineering disturbances (such as road heat island effect and pipeline active heat source). This achievement provides key data support for risk identification, preventive maintenance, and route planning of linear engineering in cold regions.  The core field of the dataset is the instability index (0-1.0), which is divided into five levels according to the degree of risk:  0-0.20 (extremely stable/low-risk): mainly distributed in the seasonally frozen soil area south of the southern boundary (SLLP).  0.20-0.40 (high stability/low risk): Belongs to weakly sensitive areas, mostly found in mountain ridges with low ground temperature (  0.40-0.60 (moderate stability/moderate risk): Key warning area, mainly distributed in the degradation transition zone between the southern boundary of permafrost in the 1970s and 1990s.  0.60-0.80 (low stability/high risk): The project is located in an unstable zone, adjacent to the main roads of national and provincial highways, and prone to thermal and melting disasters.  0.80-1.00 (extremely low stability/extremely high risk): Key intervention areas, highly focused on transportation hubs along roads (railways, highways), the China Russia crude oil pipeline (CRCOP), and large areas of discontinuous permafrost in the north.