Distribution characteristics and genesis analysis of submarine shallow gas in Ningde coastal area, Fujian Province

WU Bin; LIN Fengzeng; ZHANG Yiwu; PENG Bo; WANG Jilong; LAO Jinxiu; LI Wei; YU Junjie

doi:10.16788/j.hddz.32-1865/P.2022.01.009

2022 Vol. 43, No. 1

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Article navigation > East China Geology > 2022 > 43(1): 87-93

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WU Bin, LIN Fengzeng, ZHANG Yiwu, PENG Bo, WANG Jilong, LAO Jinxiu, LI Wei, YU Junjie. 2022. Distribution characteristics and genesis analysis of submarine shallow gas in Ningde coastal area, Fujian Province. East China Geology, 43(1): 87-93. doi: 10.16788/j.hddz.32-1865/P.2022.01.009

Citation:

WU Bin, LIN Fengzeng, ZHANG Yiwu, PENG Bo, WANG Jilong, LAO Jinxiu, LI Wei, YU Junjie. 2022. Distribution characteristics and genesis analysis of submarine shallow gas in Ningde coastal area, Fujian Province. East China Geology, 43(1): 87-93. doi: 10.16788/j.hddz.32-1865/P.2022.01.009

Distribution characteristics and genesis analysis of submarine shallow gas in Ningde coastal area, Fujian Province

1. Nanjing Center, China Geological Survey, Nanjing, 210016, Jiangsu, China;
2. Ningde Natural Resources Bureau, Ningde 352100, Fujian, China;
3. Fujian Institute of Geological Survey, Fuzhou 350013, Fujian, China

More Information

Corresponding author: YU Junjie, 25320701@qq.com

Received Date: 03 August 2021

Revised Date: 26 January 2022

Abstract

Abstract

In recent years, a series of coastal geohazard problems have been exposed during the development of the coastal area, among which the impact of submarine shallow gas is particularly serious, seriously destroying the structure stability of the submarine sediment layer as an important factor affecting the construction safety of offshore engineering. In order to ascertain the distribution characteristics and geneses of shallow gas in Ningde offshore, by means of single-channel seismic, shallow stratigraphic profile, side-scan sonar and other methods, a number of shallow gas hosted in form of layers and clusters was found in the depth of 20 m underground in the area. Based on the analysis of the distribution characteristics and seismic profiles of shallow gas in this area, in comparison with previous genesis analyses of shallow gas in neighboring areas and in combination with the geological evolution and sedimentary history of Ningde sea, we basically determined that the shallow gas in Ningde sea were derived from biogenic origin, and discussed the harm of shallow gas to offshore engineering construction and its preventive measures.
- Ningde /
- coastal zone /
- shallow gas /
- genesis

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References

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