长沙理工大学学报（自然科学版）2025，Vol.22Issue(1)：15-27,13.DOI:10.19951/j.cnki.1672-9331.20231229001
莫斯科—喀山高速铁路沿线大气冻融指数时空变化特征
Spatiotemporal variation characteristics of air freezing and thawing index along Moscow-Kazan High-Speed Railway
摘要
Abstract
[Purposes]The Moscow-Kazan High-Speed Railway is a key representative project at high latitude regions in which Chinese enterprises have participated.Therefore,it is necessary to understand the air temperature characteristics along the route to help the design and construction of this project.[Methods]Based on the monthly average air temperature dataset of CRU grid data from the Climate Research Unit(CRU)of the University of East Anglia(UEA)between 1901 and 2021,the variation trend and spatial variation characteristics of air temperature freezing and thawing index along Moscow-Kazan High-Speed Railway were studied.[Findings]In the Moscow-Kazan High-Speed Railway region,the average annual freezing index from 1901 to 2021 fluctuates between 411.23℃·d and 1 773.70℃·d and shows an overall decreasing trend.Simultaneously,the average annual thawing index during the same period fluctuates between 2 223.69℃·d and 3 170.31℃·d and exhibits an overall increasing trend.This indicates that the annual average air temperature along the Moscow-Kazan High-Speed Railway has been gradually increasing from 1901 to 2021.In terms of spatial distribution,the multi-year average freezing index in the Moscow-Kazan High-Speed Railway region demonstrates a clear increasing trend from west to east between 1901 and 2021.The multi-year average freezing index ranges from 841.55℃·d to 1 360.13℃·d.The multi-year average thawing index in the region shows relatively little variation overall,ranging from 2 654.40℃·d to 2 748.63℃·d,increasing slightly from the central region towards both the eastern and western sides.This suggests that from Nizhny Novgorod to Moscow,the air temperature gradually decreases,while from Nizhny Novgorod to Kazan,the air temperature gradually increases.The air temperature along the Moscow-Kazan High-Speed Railway is gradually rising from west to east.The warming trend is relatively less pronounced in the Moscow region,whereas the Kazan region stands out as the area with the most noticeable air temperature increase along this route.[Conclusions]Utilizing the air temperature dataset of CRU grid data to study the spatiotemporal variation characteristics of the air freezing and thawing index along the Moscow-Kazan High-Speed Railway is an effective means.It provides a scientific reference for researching climate change patterns,frozen soil conditions,and other engineering constructions along this route.关键词
莫喀高铁沿线地区/月平均气温/冻结指数/融化指数/时空变化特征/冻土变化Key words
Moscow-Kazan High-Speed Railway region/monthly average air temperature/freezing index/thawing index/spatiotemporal variation characteristics/frozen soil variation分类
交通运输引用本文复制引用
张志超,游志浪,许健,彭洋,GAGARIN L..莫斯科—喀山高速铁路沿线大气冻融指数时空变化特征[J].长沙理工大学学报（自然科学版）,2025,22(1):15-27,13.基金项目
陕西高校青年创新团队(2023-2026) （2023-2026）
陕西省自然科学基础研究计划(2024JC-YBQN-0497) （2024JC-YBQN-0497）
陕西省博士后基金(2023BSHEDZZ271) （2023BSHEDZZ271）
西安建筑科技大学人才引进科研启动经费(1960323022) Project(2023-2026)supported by The Youth Innovation Team of Shaanxi Universities （1960323022）
Project(2024JC-YBQN-0497)supported by Natural Science Basic Research Program of Shaanxi （2024JC-YBQN-0497）
Project(2023BSHEDZZ271)supported by Shaanxi Postdoctoral Fund （2023BSHEDZZ271）
Project(1960323022)supported by Research Starting Funds for Imported Talents from Xi'an University of Architecture and Technology （1960323022）
