气候变化领域集成服务门户(CCPortal): 2D automated electrical resistivity tomography (A-ERT) at Deception Island, Antarctica

CCPortal

DOI	https://doi.pangaea.de/10.1594/PANGAEA.913869
	2D automated electrical resistivity tomography (A-ERT) at Deception Island, Antarctica
	Farzamian; Mohammad; Vieira; Gonçalo; Monteiro Santos; Fernando A; Yaghoobi Tabar; Borhan; Hauck; Christian; Paz; Maria Catarina; Bernando; Ivo; Ramos; Miguel; de Pablo; Miguel A
发布日期	2020-03-24
数据集类型	dataset
英文关键词	Active-layer ; Antarctica ; Electrical Resistivity Tomography ; Permafrost
英文简介	Climate induced warming of permafrost soils is a global phenomenon, with regional and site-specific variations, which are not fully understood. In this context, a 2D automated electrical resistivity tomography (A-ERT) system was installed for the first time in Antarctica at Deception Island, associated to the existing Crater Lake site of the Circumpolar Active Layer Monitoring Network (CALM-S). This set-up aims to I) monitor subsurface freezing and thawing processes on a daily and seasonal basis and to map the spatial and temporal variability of thaw depth, and to II) study the impact of short-lived extreme meteorological events on active layer dynamics. In addition, the feasibility of installing and running autonomous ERT monitoring stations in remote and extreme environments such as Antarctica was evaluated for the first time. Measurements were repeated at 4-hour intervals during a full year, enabling the detection of seasonal trends, as well as short-lived resistivity changes reflecting individual meteorological events. The latter is important to distinguish between (1) long-term climatic trends and (2) the impact of anomalous seasons on the ground thermal regime. The A-ERT.txt file contains all ERT surveys which were performed using Wenner electrode configuration. 20 copper plates, which are connected by buried cables to the active boxes, with an electrode spacing of 0.5 m were used in this experiment. This setup yields 56 individual data points for each monitoring data set at six data levels. All data were saved in the Res2Dinv format. The temperature. xlsx file contains air and ground temperatures data during the experiment period. The Air temperature was measured at 160 cm above the surface and ground temperatures in the shallow borehole S3,3 were measured with ibutton-sensors at depths 2.5, 5, 10, 20, 40, 80 and 160 cm.
空间范围	Latitude: -62.985190 * Longitude: -60.679110
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215611
推荐引用方式 GB/T 7714	Farzamian,Mohammad,Vieira,et al. 2D automated electrical resistivity tomography (A-ERT) at Deception Island, Antarctica.2020-03-24.https://doi.pangaea.de/10.1594/PANGAEA.913869.