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Quantitative model prediction of the combined effect of moisture content and temperature on purple mudstone decay in south-western China
Zhang, Dan1,3,4; Chen, Anqiang2,3,4; Zhao, Jixia3,4; Lu, Chuanhao3,4; Liu, Gangcai3,4
Corresponding AuthorGangcai Liu
2017
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
EISSN1872-695X
Volume295Pages:656-661
SubtypeArticle
Abstract

Rock decay is mainly the result of the combined effects of moisture content and temperature, but little is known about the quantitative relationship between these variables and the rate of rock decay. In this study we develop quantitative calculation models of rock decay rate under laboratory conditions and validate the efficiency of these models by comparing the predicted rock decay mass and that measured for rock exposed in the field. Rainfall and temperature data in the field were standardised to a dimensionless moisture content and temperature variables, respectively, and then the predicted rock decay mass was calculated by the models. The measured rock decay mass was determined by manual sieving. Based on our previously determined relationship between a single factor (moisture content or temperature) and the rate of rock decay in the laboratory, power function models are developed. Results show that the rock decay mass calculated by the model was comparable with field data, with averaged relative errors of 1.53%, 9.00% and 11.82% for the Tuodian group (J(3)t), Matoushan group (K(2)m) and Lufeng group (J(1)l), respectively, which are mainly due to inaccurate transformation of field rainfall into the rock moisture content and artificial disturbance when the samples were sieved in the field. Our results show that the developed models based on laboratory-derived rates can accurately predict the decay rates of mudstones exposed in the field. (C) 2017 Elsevier B.V. All rights reserved.

KeywordRock Decay Mudstone Moisture Content And Temperature Interaction Moisture Change Temperature Difference Quantitative Model
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2017.07.023
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordSOUTHWESTERN CHINA ; ROCKS ; WATERSHEDS
Language英语
Quartile2区
TOP
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000413175000047
Funding OrganizationNational Natural Science Foundation of China(41471232 ; 40971168)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/19178
Collection山地灾害与地表过程重点实验室
Affiliation1.Yunnan Agr Univ, Coll Resources & Environm, Kunming 650205, Yunnan, Peoples R China
2.Yunnan Acad Agr Sci, Inst Agr Environm & Resources, Kunming 650205, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, 9,Block 4,Renmin South Rd,POB 417, Chengdu 610041, Sichuan, Peoples R China
4.Minist Water Resources, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Dan,Chen, Anqiang,Zhao, Jixia,et al. Quantitative model prediction of the combined effect of moisture content and temperature on purple mudstone decay in south-western China[J]. GEOMORPHOLOGY,2017,295:656-661.
APA Zhang, Dan,Chen, Anqiang,Zhao, Jixia,Lu, Chuanhao,&Liu, Gangcai.(2017).Quantitative model prediction of the combined effect of moisture content and temperature on purple mudstone decay in south-western China.GEOMORPHOLOGY,295,656-661.
MLA Zhang, Dan,et al."Quantitative model prediction of the combined effect of moisture content and temperature on purple mudstone decay in south-western China".GEOMORPHOLOGY 295(2017):656-661.
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