Gas Geochemical Characteristics of the Zhang-Bo Seismic Zone Extracted from Hyper-spectral Data

doi:10.11867/j.issn.1001-8166.2016.01.0059

Advances in Earth Science ›› 2016, Vol. 31 ›› Issue (1): 59-65. doi: 10.11867/j.issn.1001-8166.2016.01.0059

Special Issue: Seismic Survey；

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Gas Geochemical Characteristics of the Zhang-Bo Seismic Zone Extracted from Hyper-spectral Data

Yueju Cui ¹( ), Jianguo Du ¹, Ying Li ¹, Lei Liu ¹, Xiaocheng Zhou ¹, Yang Chen ², Zhi Chen ¹, Xiaokun Han ³

1. CEA Key Laboratory of Earthquake Prediction (Institute of Earthquake Science), China Earthquake Administration, Beijing 100036, China
2. China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China
3. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Online:2016-01-10 Published:2016-01-10
About author:First author: Cui Yueju(1985-), female, Luquan City, Hebei Province, Research Assistant. Research area include applied geochemistry. E-mail: cehuicuiyueju@126.com
Supported by:
Project supported by the National Natural Science Foundation of China "Contribution of C-bearing gas emission from solid Earth before and after the great Wenchuan earthquake in Western Sichuan to the atmosphere"(No.41403099);The Basic Research Project of Institute of Earthquake Science, CEA "Characteristics of hyper-spectrum gas geochemistry along the Longmenshan Fault"(No.2015IES0402)

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Yueju Cui, Jianguo Du, Ying Li, Lei Liu, Xiaocheng Zhou, Yang Chen, Zhi Chen, Xiaokun Han. Gas Geochemical Characteristics of the Zhang-Bo Seismic Zone Extracted from Hyper-spectral Data[J]. Advances in Earth Science, 2016, 31(1): 59-65.

The affecting factors on gas geochemical characteristics extracted from hyper-spectral data in the Zhangjiakou-Bohai seismic zone were discussed. Temporal and spatial variations of total column CO and CH₄ were analyzed based on the satellite hyper-spectral data. Temporally, the total column CO in the study area showed obviously seasonal variation, while CH₄ didn't. Spatially, values of total column CO and CH₄ in the southern part of the study area were higher than thoes in the northern part. Both total column CO and CH₄ increased from western to eastern, and showed the largest changing rate over the piedmont fault zone at the junction of plain and mountains. The temporal variations of total CO and CH₄ backgrounds could be attributed to the effects of climate and weather. The spatial variations of total CO and CH₄ backgrounds may be controlled by the regional topography, geology, seismic activities, crustal thickness and so on. The results not only provide new scientific data for monitoring earthquake, but also have an important significance to the study of earthquake anomaly identification and segmentation seismic activity of fault zone.

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