Rock temperature variability in high-altitude rockfall-prone areas  

作　　者：Guido NIGRELLI Marta CHIARLE Andrea MERLONE Graziano COPPA Chiara MUSACCHIO 

机构地区：[1]Consiglio Nazionale delle Ricerche(CNR),Istituto di Ricerca per la Protezione Idrogeologica(IRPI),Torino 10135,Italy [2]Istituto Nazionale di Ricerca Metrologica(INRiM),Torino 10135,Italy

出　　处：《Journal of Mountain Science》2022年第3期798-811,共14页山地科学学报（英文）

基　　金：carried out in the framework of the Ri ST2 Project,cofinanced by Fondazione Cassa di Risparmio di Torino。

摘　　要：In a context of cryosphere degradation caused by climate warming,rock temperature is one of the main driving factors of rockfalls that occur on high-elevation mountain slopes.In order to improve the knowledge of this critical relationship,it is necessary to increase measurement capability of rock temperature and its variability in different lithological and slope/aspect conditions,and also to increase local scale studies,increasing the quality and the comparability of the data.This paper shows an example of metrological characterization of sensors used for rock temperature measurement in mountain regions,by means of the measurement uncertainty.Under such approach,data and results from temperature measurements carried out in the Bessanese high-elevation experimental site(Western European Alps)are illustrated.The procedures for the calibration and field characterization of sensors allow to measure temperature in different locations,depths and lithotypes,within 0.10°C of overall uncertainty.This work has highlighted that metrological traceability is fundamental to asses data quality and establish comparability among different measurements;that there are strong differences between air temperature and near-surface rock temperature;and that there are significant differences of rock temperature acquired in different aspect conditions.Finally,solar radiation,slope/aspect conditions and lithotype,seem to be the main driving factors of rock temperature.

关 键 词：Rock temperature ROCKFALLS European Alps Climate warming Temperature measurement 

分 类 号：P464[天文地球—大气科学及气象学] P642.2