Review of natural gas hydrate dissociation effects on seabed stability

Min Zhang (), Ming Niu, Shiwei Shen, Shulin Dai and Yan Xu
Additional contact information
Min Zhang: Jilin University
Ming Niu: Jilin University
Shiwei Shen: Jilin University
Shulin Dai: Jilin University
Yan Xu: Jilin University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2021, vol. 107, issue 2, No 1, 1035-1045

Abstract: Abstract As a high-energy clean energy substance, natural gas hydrate (NGH) has a high value of development and utilization. However, NGH is extremely easy to decompose during its exploitations, thereby leading to the destruction of seabed stability. In this paper, the distribution and significance of NGH, the mechanism of decomposition and formation, the effect of seabed stability, and the influencing factors are studied and analyzed. Studies show that NGH reserves are large, and they are easy to decompose. The dissociation of NGH is the main factor of seabed instability. During the decomposition of NGH, the strength parameters (cohesion and friction angle) of seabed soil are reduced, and the pore water pressure of seabed increases. The seabed structure exhibits soft sliding surface and large deep cracks, leading to the instability of sediments and serious seabed landslide. The factors affecting the decomposition of NGH include environmental change, human activities, structure difference in seabed itself, and sea solute difference. This paper aims to better understand the decomposition mechanism of NGH for analyzing the influencing mechanism of seabed stability and for providing a direction for the study of marine geological hazards.

Keywords: Natural gas hydrate; Formation and decomposition; Seabed stability; Influencing factors (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://link.springer.com/10.1007/s11069-021-04629-5 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:nathaz:v:107:y:2021:i:2:d:10.1007_s11069-021-04629-5

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11069

DOI: 10.1007/s11069-021-04629-5

Access Statistics for this article

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards is currently edited by Thomas Glade, Tad S. Murty and Vladimír Schenk

More articles in Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards from Springer, International Society for the Prevention and Mitigation of Natural Hazards
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().