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Methane Hydrates and Related Phenomena
Research Guide
What is Methane Hydrates and Related Phenomena?
Methane hydrates and related phenomena refer to clathrate structures in which methane gas molecules are enclosed within a lattice of water molecules, primarily occurring in subseafloor sediments and linked to anaerobic oxidation processes mediated by archaea and microbial communities in marine environments.
This field encompasses 328,037 works focused on anaerobic methane oxidation, gas hydrates, and biogeochemical cycles involving archaea and denitrification in marine settings. "Clathrate Hydrates of Natural Gases" by E. Dendy Sloan, Carolyn A. Koh (2007) compiles over 4,000 hydrate-related publications into a comprehensive resource on their properties and behavior. Microbial diversity studies, such as "Microbial diversity in the deep sea and the underexplored “rare biosphere”" by Mitchell L. Sogin et al. (2006), reveal vast unseen communities in deep-sea sediments relevant to hydrate biogeochemistry.
Topic Hierarchy
Research Sub-Topics
Anaerobic Oxidation of Methane by Archaea
Mechanisms of AOM mediated by ANME archaea coupled to sulfate reduction in marine sediments. Researchers study syntrophic consortia using molecular and isotopic techniques.
Nitrite-Driven Anaerobic Methane Oxidation
Biogeochemical processes linking n-damo bacteria and archaea for methane oxidation with nitrite/nitrate. Lab and field studies quantify rates and environmental controls.
Microbial Communities in Subseafloor Sediments
Diversity, activity, and adaptation of microbes in deep biosphere linked to methane cycling. Metagenomic and cultivation-independent methods reveal rare biosphere dynamics.
Gas Hydrates and Methane Biogeochemistry
Formation, stability, and microbial oxidation of clathrate hydrates in continental margins. Integrated geochemical models assess hydrate reservoirs as energy and climate factors.
Marine Denitrification Coupled to Methane Oxidation
Interactions between denitrifying bacteria and methanotrophs in oxygen minimum zones. Isotopic and process-rate measurements elucidate nitrogen loss pathways.
Why It Matters
Methane hydrates represent a massive potential energy resource, with DOE programs targeting commercialization through field tests in the Alaska North Slope and offshore Gulf of Mexico, as noted in "Methane Hydrate Production Feasibility" (2025). Their decomposition poses climate risks, as outlined in tipping element analyses excluding marine methane hydrates from near-term thresholds due to inaccessibility ("Tipping elements in the Earth's climate system"). "Deepwater Methane Hydrate Characterization and Scientific Assessment" (2025) details drilling and coring to assess occurrence and properties for resource appraisal, while permafrost carbon feedback studies like "Climate change and the permafrost carbon feedback" by Edward A. G. Schuur et al. (2015) highlight methane release impacts on global warming.
Reading Guide
Where to Start
"Clathrate Hydrates of Natural Gases" by E. Dendy Sloan, Carolyn A. Koh (2007), as it collates over 4,000 publications into a comprehensive, authoritative reference on hydrate properties, formation, and natural occurrences, providing essential foundational knowledge.
Key Papers Explained
"Clathrate Hydrates of Natural Gases" by E. Dendy Sloan, Carolyn A. Koh (2007) establishes core physical chemistry of hydrates, which connects to paleoclimate contexts in "Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present" by James C. Zachos et al. (2001) and "An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics" by James C. Zachos et al. (2008) that discuss hydrate-linked carbon cycles. "Microbial diversity in the deep sea and the underexplored “rare biosphere”" by Mitchell L. Sogin et al. (2006) builds on this by detailing microbial roles in deep sediments. "Climate change and the permafrost carbon feedback" by Edward A. G. Schuur et al. (2015) extends to modern methane release risks.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Recent preprints like "Deepwater Methane Hydrate Characterization and Scientific Assessment" (2025) advance drilling-based assessments of hydrate sediments. News on "Methane Hydrate Production Feasibility" (2025) and "Methane Hydrate Research and Modeling" (2025) emphasize DOE field programs in Alaska and Gulf of Mexico. Tipping element studies (recent) evaluate hydrate stability thresholds amid climate change.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | <i>XDS</i> | 2010 | Acta Crystallographica... | 16.4K | ✓ |
| 2 | <i>Molecular Theory of Gases and Liquids</i> | 1955 | Physics Today | 11.4K | ✕ |
| 3 | Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Pr... | 2001 | Science | 10.3K | ✕ |
| 4 | Clathrate Hydrates of Natural Gases | 2007 | — | 9.7K | ✕ |
| 5 | Quantitative Film Detection of 3H and 14C in Polyacrylamide Ge... | 1975 | European Journal of Bi... | 4.7K | ✕ |
| 6 | Physics of shock waves and high-temperature hydrodynamic pheno... | 1970 | Journal of Molecular S... | 4.2K | ✕ |
| 7 | Microbial diversity in the deep sea and the underexplored “rar... | 2006 | Proceedings of the Nat... | 3.7K | ✓ |
| 8 | Climate change and the permafrost carbon feedback | 2015 | Nature | 3.6K | ✓ |
| 9 | An early Cenozoic perspective on greenhouse warming and carbon... | 2008 | Nature | 3.5K | ✓ |
| 10 | A Pervasive Millennial-Scale Cycle in North Atlantic Holocene ... | 1997 | Science | 3.3K | ✕ |
In the News
Understanding the processes associated with the formation ...
The results of model experiments aimed at studying processes related to the formation and decomposition of methane and carbon dioxide gas hydrates, conducted using a laboratory setup, are presented...
Methane Hydrate Production Feasibility
DOE's methane hydrate program is focused on developing the technology and knowledge that will allow industry to commercialize methane hydrate production. Our field programs are focused on the Alask...
Gas Hydrates
Gas hydrates are ice-like crystalline substances occurring in nature where a solid water lattice accommodates gas molecules (primarily methane, the major component of natural gas) in a cage-like st...
Methane Hydrate Research and Modeling
Research is focused on understanding the physical and chemical nature of gas hydrate-bearing sediments. These studies advance the understanding of the in situ nature of GHBS and their potential res...
IODP JRSO • News Stories
### 2024
Code & Tools
This code implements a set of algorithms to solve for the thermodynamic stability of clathrate hydrates. This code is motivated by the executable p...
NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation. NeqSim can be used as a stand-alone tool via Excel...
GenIce is a swiss army knife to generate hydrogen-disordered ice structures. (version 2.2.7.5)
🎲Modern 3D graphics made simple with C++20 cross-platform framework and rendering abstraction API on top of DirectX 12, Vulkan & Metal ### Topics
🎲Modern 3D graphics made simple with C++17 cross-platform framework and rendering abstraction API on top of DirectX 12, Metal & Vulkan ### License...
Recent Preprints
Data-driven machine learning models for predicting ...
27. Cunningham, E. M. et al. High abundances of microplastic pollution in deep-sea sediments: Evidence from antarctica and the Southern Ocean. _Environ. Sci. Technol._ **54**, 13661–13671 (2020). ...
Deepwater Methane Hydrate Characterization and Scientific Assessment
The primary project goal is to gain insight into the nature, formation, occurrence, and physical properties of methane hydrate-bearing sediments for methane hydrate resource appraisal through the p...
(PDF) Methane. A review
05:50 19 November 2012
Tipping elements in the Earth's climate system
system. They could be triggered this century and would undergo a qualitative change within this millennium. We exclude from the map systems in which any threshold appears inaccessible this century ...
Climate Change – The Science
\\* Methane is 262% and nitrous oxide is 123% of the levels in 1750 according to the World Meteorological Organization.
Latest Developments
Recent developments in methane hydrate research include ongoing US Department of Energy studies on characterization and production techniques, such as electromagnetic surveying and electrical resistivity methods, as well as investigations into the physical and chemical properties of hydrate-bearing sediments (energy.gov, 2025; energy.gov, 2025). Additionally, recent research highlights the potential for methane reservoirs seeping from the seafloor, with estimates of vast methane quantities beneath the Greenland continental shelf (mongabay.com, 2026; nature.com, 2025). Advances in extraction methods, such as cyclic N2–CO2 gas injection, have demonstrated high methane recovery and CO2 sequestration efficiency, with experimental and modeling efforts showing promising results as of early 2026 (ideas.repec.org, 2025).
Sources
Frequently Asked Questions
What are clathrate hydrates of natural gases?
Clathrate hydrates are ice-like crystalline substances where a solid water lattice encloses gas molecules, primarily methane, in a cage-like structure. "Clathrate Hydrates of Natural Gases" by E. Dendy Sloan, Carolyn A. Koh (2007) provides an authoritative update drawing from over 4,000 publications on their formation and properties. These occur naturally in subseafloor sediments under specific pressure and temperature conditions.
How does anaerobic oxidation of methane relate to gas hydrates?
Anaerobic oxidation of methane occurs in subseafloor sediments associated with gas hydrates, mediated by archaea and linked to denitrification processes. This biogeochemical activity influences methane flux in marine environments. The field description notes its focus on microbial communities driving these reactions.
What role do archaea play in marine methane biogeochemistry?
Archaea mediate anaerobic methane oxidation in marine sediments near gas hydrates. Keywords highlight their involvement in nitrite-driven processes and denitrification. Deep-sea microbial diversity exceeds prior estimates, as shown in "Microbial diversity in the deep sea and the underexplored “rare biosphere”" by Mitchell L. Sogin et al. (2006).
What are current applications of methane hydrate research?
Research targets production feasibility in Alaska North Slope and Gulf of Mexico via drilling and logging, per "Methane Hydrate Production Feasibility" (2025). Studies model physical properties of hydrate-bearing sediments for fluid flow response. "Deepwater Methane Hydrate Characterization and Scientific Assessment" (2025) assesses geologic occurrence for resource appraisal.
What is the scale of research in this field?
The topic includes 328,037 works on methane hydrates and related phenomena. Growth data over 5 years is not available. Top papers like "Clathrate Hydrates of Natural Gases" (2007) have amassed 9650 citations.
Open Research Questions
- ? How do microbial communities in subseafloor sediments quantitatively control anaerobic methane oxidation rates near hydrate deposits?
- ? What are the precise thermodynamic conditions triggering hydrate decomposition in deep-sea circulation hotspots?
- ? To what extent do nitrite-driven processes by archaea couple methane oxidation with denitrification in varying marine sediment types?
- ? How will climate-driven changes affect methane release from hydrate reservoirs over millennial scales?
- ? What fluid flow responses occur in hydrate-bearing sediments during production testing?
Recent Trends
DOE initiatives focus on Alaska North Slope and Gulf of Mexico field programs for hydrate production, as in "Methane Hydrate Production Feasibility".
2025"Deepwater Methane Hydrate Characterization and Scientific Assessment" details coring and logging for resource appraisal.
2025-09-30Laboratory models of hydrate formation and decomposition processes appear in recent news ("Understanding the processes associated with the formation ..."), while tipping element maps exclude accessible marine hydrate thresholds this century ("Tipping elements in the Earth's climate system").
Methane levels are 262% of 1750 values ("Climate Change – The Science", 2025).
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