Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scitotenv.2017.08.305 |
Land surface temperature as an indicator of the unsaturated zone thickness: A remote sensing approach in the Atacama Desert | |
Urqueta, Harry1; Jodar, Jorge2; Herrera, Christian1,3; Wilke, Hans-G.1; Medina, Agustin2; Urrutia, Javier1; Custodio, Emilio4; Rodriguez, Jazna5 | |
通讯作者 | Jodar, Jorge |
来源期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
ISSN | 0048-9697 |
EISSN | 1879-1026 |
出版年 | 2018 |
卷号 | 612页码:1234-1248 |
英文摘要 | Land surface temperature (LST) seems to be related to the temperature of shallow aquifers and the unsaturated zone thickness (Delta Z(uz)). That relationship is valid when the study area fulfils certain characteristics: a) there should be no downward moisture fluxes in an unsaturated zone, b) the soil composition in terms of both, the different horizon materials and their corresponding thermal and hydraulic properties, must be as homogeneous and isotropic as possible, c) flat and regular topography, and d) steady state groundwater temperature with a spatially homogeneous temperature distribution. A night time Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image and temperature field measurements are used to test the validity of the relationship between LST and Delta Z(uz) at the Pampa del Tamarugal, which is located in the Atacama Desert (Chile) and meets the above required conditions. The results indicate that there is a relation between the land surface temperature and the unsaturated zone thickness in the study area. Moreover, the field measurements of soil temperature indicate that shallow aquifers dampen both the daily and the seasonal amplitude of the temperature oscillation generated by the local climate conditions. Despite empirically observing the relationship between the LST and Delta Z(uz) in the study zone, such a relationship cannot be applied to directly estimate Delta Z(uz) using temperatures from nighttime thermal satellite images. To this end, it is necessary to consider the soil thermal properties, the soil surface roughness and the unseen water and moisture fluxes (e.g., capillarity and evaporation) that typically occur in the subsurface. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Unsaturated zone thickness Soil temperature Shallow aquifers Remote sensing Arid zones Atacama Desert |
类型 | Article |
语种 | 英语 |
国家 | Chile ; Spain |
收录类别 | SCI-E |
WOS记录号 | WOS:000413313700121 |
WOS关键词 | PAMPA DEL TAMARUGAL ; SOUTHERN GREAT-PLAINS ; URBAN HEAT-ISLAND ; NORTHERN CHILE ; SOIL-MOISTURE ; SHALLOW GROUNDWATER ; REGIONAL AQUIFER ; ENERGY BALANCE ; CLIMATE-CHANGE ; ARID REGION |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/212911 |
作者单位 | 1.Univ Catolica Norte, Dept Ciencias Geol, Antofagasta, Chile; 2.Tech Univ Catalonia UPC, Dept Civil & Environm Engn, Groundwater Hydrol Grp, Hydromodel Host SL & Aquageo Proyectos SL, Barcelona, Spain; 3.Univ Catolica Norte, Ctr Invest Tecnol Agua Desierto CEITSAZA, Antofagasta, Chile; 4.Tech Univ Catalonia UPC, Royal Acad Sci Spain, Civil & Environm Dept, Barcelona, Spain; 5.CIDERH, Iquique, Chile |
推荐引用方式 GB/T 7714 | Urqueta, Harry,Jodar, Jorge,Herrera, Christian,et al. Land surface temperature as an indicator of the unsaturated zone thickness: A remote sensing approach in the Atacama Desert[J],2018,612:1234-1248. |
APA | Urqueta, Harry.,Jodar, Jorge.,Herrera, Christian.,Wilke, Hans-G..,Medina, Agustin.,...&Rodriguez, Jazna.(2018).Land surface temperature as an indicator of the unsaturated zone thickness: A remote sensing approach in the Atacama Desert.SCIENCE OF THE TOTAL ENVIRONMENT,612,1234-1248. |
MLA | Urqueta, Harry,et al."Land surface temperature as an indicator of the unsaturated zone thickness: A remote sensing approach in the Atacama Desert".SCIENCE OF THE TOTAL ENVIRONMENT 612(2018):1234-1248. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。