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40 Results Found

  • Article
  • Open Access
2,079 Views
19 Pages

Analysis of Seismic Methane Anomalies at the Multi-Spatial and Temporal Scales

  • Xu Wang,
  • Jing Cui,
  • Zeren Zhima,
  • Wenliang Jiang,
  • Yalan Huang,
  • Hui Chen,
  • Qiang Li and
  • Lin Wang

15 June 2024

Relevant studies have shown that methane gas has a close relationship with seismic activity. The concentration of methane released within a tectonic zone can reflect the intensity status of tectonic activities, which is important for seismic monitori...

  • Article
  • Open Access
1 Citations
2,596 Views
23 Pages

10 August 2024

Identifying seismic CH4 anomalies via remote sensing has been verified as a legitimate method. However, there are still some problems, such as unknown reliability due to the complex characteristics of seismic anomalies. In this study, a multi-dimensi...

  • Article
  • Open Access
16 Citations
4,917 Views
20 Pages

27 February 2021

The launch of the TROPOspheric Monitoring Instrument (TROPOMI) on the Sentinel-5 Precursor (S-5P) satellite has revolutionized pollution observations from space. The purpose of this study was to link spatiotemporal variations in TROPOMI methane (CH4)...

  • Article
  • Open Access
1,861 Views
28 Pages

Satellite-Based Seasonal Fingerprinting of Methane Emissions from Canadian Dairy Farms Using Sentinel-5P

  • Padmanabhan Jagannathan Prajesh,
  • Kaliaperumal Ragunath,
  • Miriam Gordon and
  • Suresh Neethirajan

27 June 2025

Methane (CH4) emissions from dairy farming represent a substantial yet under-quantified share of agricultural greenhouse gas emissions. This study provides an in-depth, satellite-based fingerprinting analysis of methane emissions from Canada’s...

  • Article
  • Open Access
1 Citations
1,265 Views
24 Pages

24 May 2025

The ability to predict the volume of methane outbursts in coal mines is critical for the prevention of methane outburst accidents and the assurance of coal-mine safety. This paper’s central argument is that existing prediction models are limite...

  • Article
  • Open Access
1 Citations
814 Views
24 Pages

Research on Gas Concentration Anomaly Detection in Coal Mining Based on SGDBO-Transformer-LSSVM

  • Mingyang Liu,
  • Longcheng Zhang,
  • Zhenguo Yan,
  • Xiaodong Wang,
  • Wei Qiao and
  • Longfei Feng

25 August 2025

Methane concentration anomalies during coal mining operations are identified as important factors triggering major safety accidents. This study aimed to address the key issues of insufficient adaptability of existing detection methods in dynamic and...

  • Article
  • Open Access
1 Citations
2,347 Views
17 Pages

Identifying Active Rather than Total Methanotrophs Inhabiting Surface Soil Is Essential for the Microbial Prospection of Gas Reservoirs

  • Kewei Xu,
  • Cheng Tao,
  • Lei Gu,
  • Xuying Zheng,
  • Yuanyuan Ma,
  • Zhengfei Yan,
  • Yongge Sun,
  • Yuanfeng Cai and
  • Zhongjun Jia

Methane-oxidizing bacteria (MOB) have long been recognized as an important bioindicator for oil and gas exploration. However, due to their physiological and ecological diversity, the distribution of MOB in different habitats varies widely, making it...

  • Article
  • Open Access
1 Citations
2,298 Views
19 Pages

1 July 2024

The increasing discovery of underwater methane leakage underscores the importance of monitoring methane emissions for environmental protection. Underwater remote sensing of methane leakage is critical and meaningful to protect the environment. The co...

  • Article
  • Open Access
3 Citations
4,268 Views
23 Pages

21 April 2021

Seepage of geological methane through sediments of Arctic lakes might contribute conceivably to the atmospheric methane budget. However, the abundance and precise locations of such seeps are poorly quantified. For Lake Neyto, one of the largest lakes...

  • Article
  • Open Access
7 Citations
3,603 Views
18 Pages

5 July 2021

In 2018–2020 the research vessel (R/V) Professor Logachev (cruises 39 and 41) carried out geological and geochemical studies in the bottom waters of the Mid-Atlantic Ridge hydrothermal fields at 14°45’ N, 13°07’ N, and 13°09’ N. Two new hydrothermal...

  • Article
  • Open Access
182 Views
31 Pages

27 December 2025

This study aims to demonstrate the presence of a pronounced coseismic increase in atmospheric methane concentrations during the 2024 Noto Peninsula Earthquake and to examine whether this increase may have originated from underground natural gas relea...

  • Article
  • Open Access
4 Citations
1,989 Views
19 Pages

In-Situ Study Methods Used in the Discovery of Sites of Modern Hydrothermal Ore Formation on the Mid-Atlantic Ridge

  • Sergei Sudarikov,
  • Vladimir Petrov,
  • Egor Narkevsky,
  • Irina Dobretsova and
  • Irina Antipova

27 September 2022

This paper presents in situ methods used in the search for areas of modern hydrothermal activity, as well as the results of their long-term use during cruises within the Russian exploration area of the Mid-Atlantic Ridge (MAR). In this study, the fol...

  • Article
  • Open Access
23 Citations
5,580 Views
13 Pages

A UAV-Based Thermal-Imaging Approach for the Monitoring of Urban Landfills

  • Giovanni Tanda,
  • Marco Balsi,
  • Paolo Fallavollita and
  • Valter Chiarabini

The monitoring of waste disposal sites is important in order to minimize leakages of biogas, produced by anaerobic digestion and potentially explosive and detrimental to the environment. In this research, thermal imaging from unmanned aerial vehicles...

  • Article
  • Open Access
1 Citations
1,265 Views
15 Pages

Acid-Extracted Hydrocarbon Anomalies and Significance in the Chaoshan Depression of the Northern South China Sea

  • Guangjian Zhong,
  • Jing Zhao,
  • Zhongquan Zhao,
  • Kangshou Zhang,
  • Junhui Yu,
  • Chunjiang Shang,
  • Guanghong Tu and
  • Changmao Feng

To predict the favorable zones and the types of reservoirs, acid extraction has been used in the Chaoshan depression to detect trace amounts of light hydrocarbons, heavy hydrocarbons, and the δ 13C (‰) of methane. As a result, two integr...

  • Feature Paper
  • Article
  • Open Access
29 Citations
6,551 Views
13 Pages

Multifractal Detrended Cross-Correlation Analysis of Global Methane and Temperature

  • Chris G. Tzanis,
  • Ioannis Koutsogiannis,
  • Kostas Philippopoulos and
  • Nikolaos Kalamaras

7 February 2020

Multifractal Detrended Cross-Correlation Analysis (MF-DCCA) was applied to time series of global methane concentrations and remotely-sensed temperature anomalies of the global lower and mid-troposphere, with the purpose of investigating the multifrac...

  • Article
  • Open Access
32 Citations
5,948 Views
14 Pages

The Spatial and Temporal Distribution Patterns of XCH4 in China: New Observations from TROPOMI

  • Jiaxing Zhang,
  • Ge Han,
  • Huiqin Mao,
  • Zhipeng Pei,
  • Xin Ma,
  • Weijie Jia and
  • Wei Gong

21 January 2022

Methane is the second most important greenhouse gas after carbon dioxide. The intensity and distribution of methane source/sink in China are unknown. We collected the column-averaged dry air mixing ratio of CH4 (abbreviated as XCH4 hereafter) from TR...

  • Article
  • Open Access
5 Citations
1,793 Views
19 Pages

17 May 2024

Our paper deals with gas-geochemical measurements of CH4 and CO2, as well as the first measurements of dissolved H2 and He in the waters of the eastern shelf of Sakhalin Island, obtained during cruise 68 on the R/V Akademik Oparin (OP68) on 12–...

  • Letter
  • Open Access
14 Citations
7,401 Views
11 Pages

11 September 2017

Abstract: Methane is an important greenhouse gas due to its high warming potential. While quantifying anthropogenic methane emissions is important for evaluation measures applied for climate change mitigation, large emission uncertainties still exist...

  • Feature Paper
  • Article
  • Open Access
4 Citations
1,520 Views
20 Pages

28 May 2024

Coalbed methane (CBM) is the only unconventional gas in Poland with estimated recoverable resources. The prospects for developing deep CBM have been explored in recent years by drilling deep exploration wells within the depocenter of the Upper Silesi...

  • Article
  • Open Access
1 Citations
2,325 Views
19 Pages

Features of Degassing from Overburden Rock Massifs: A Case Study Using Radon

  • Timofey Leshukov,
  • Aleksey Larionov,
  • Ekaterina Nastavko,
  • Philipp Kaizer and
  • Konstantin Legoshchin

25 December 2023

Overburden rock massifs resulting from open-pit coal mining are very common objects in the world’s mining regions. These locations pose a significant challenge as the global mining industry expands. These dumps are capable of self-burning for q...

  • Letter
  • Open Access
9 Citations
3,740 Views
17 Pages

30 September 2020

The monitoring of wetland methane (CH4) emission is essential in the context of global CH4 emission and climate change. The remotely sensed multitemporal Atmospheric Infrared Sounder (AIRS) CH4 data and the Breaks for Additive Season and Trend (BFAST...

  • Article
  • Open Access
1,709 Views
19 Pages

Geochemical Tracing of Seabed Hydrocarbon Seepage in the Yantai Depression, South Yellow Sea Basin

  • Jianqiang Wang,
  • Yuxi Zhang,
  • Jian Zhang,
  • Jie Liang,
  • Qingfang Zhao and
  • Heping Dong

10 October 2024

Widespread submarine hydrocarbon seepage can form complex fluid seepage characteristics, with submarine sediment geochemistry effectively recording seepage activities and fluid component changes due to hydrocarbon seepage. This is crucial for offshor...

  • Communication
  • Open Access
5 Citations
2,713 Views
10 Pages

18 October 2023

Orphaned oil and gas wells represent an important environmental and economic development concern in areas where historical energy exploration and production activity pre-dated regulations on well abandonment documentation practices. From an economic...

  • Article
  • Open Access
34 Citations
8,912 Views
24 Pages

Atmospheric Sampling on Ascension Island Using Multirotor UAVs

  • Colin Greatwood,
  • Thomas S. Richardson,
  • Jim Freer,
  • Rick M. Thomas,
  • A. Rob MacKenzie,
  • Rebecca Brownlow,
  • David Lowry,
  • Rebecca E. Fisher and
  • Euan G. Nisbet

23 May 2017

As part of an NERC-funded project investigating the southern methane anomaly, a team drawn from the Universities of Bristol, Birmingham and Royal Holloway flew small unmanned multirotors from Ascension Island for the purposes of atmospheric sampling....

  • Article
  • Open Access
14 Citations
3,447 Views
14 Pages

Interannual Variability of Atmospheric CH4 and Its Driver Over South Korea Captured by Integrated Data in 2019

  • Samuel Takele Kenea,
  • Haeyoung Lee,
  • Sangwon Joo,
  • Shanlan Li,
  • Lev D. Labzovskii,
  • Chu-Yong Chung and
  • Yeon-Hee Kim

9 June 2021

Understanding the temporal variability of atmospheric methane (CH4) and its potential drivers can advance the progress toward mitigating changes to the climate. To comprehend interannual variability and spatial characteristics of anomalous CH4 mole f...

  • Article
  • Open Access
3 Citations
1,892 Views
16 Pages

Formation Mechanism of Heavy Hydrocarbon Carbon Isotope Anomalies in Natural Gas from Ordovician Marine Carbonate in the Ordos Basin

  • Wen Zhang,
  • Wenhui Liu,
  • Xiaofeng Wang,
  • Zhengliang Huang,
  • Qingfen Kong,
  • Houyong Luo,
  • Dongdong Zhang,
  • Peng Liu,
  • Xiaoyan Chen and
  • Zhenghong Cai

15 November 2023

Interactive depositional systems of marine carbonates and gypsum salt rocks are closely related to natural gas reservoirs. Despite continuous progress in the exploration of new areas of marine carbonate genesis within the Ordos Basin, the source and...

  • Review
  • Open Access
21 Citations
6,370 Views
11 Pages

Gas Seeps at the Edge of the Gas Hydrate Stability Zone on Brazil’s Continental Margin

  • Marcelo Ketzer,
  • Daniel Praeg,
  • Maria A.G. Pivel,
  • Adolpho H. Augustin,
  • Luiz F. Rodrigues,
  • Adriano R. Viana and
  • José A. Cupertino

Gas hydrate provinces occur in two sedimentary basins along Brazil’s continental margin: (1) The Rio Grande Cone in the southeast, and (2) the Amazon deep-sea fan in the equatorial region. The occurrence of gas hydrates in these depocenters was...

  • Article
  • Open Access
4 Citations
2,441 Views
18 Pages

In recent years, frequent open biomass burning (OBB) activities such as agricultural residue burning and forest fires have led to severe air pollution and carbon emissions across South and Southeast Asia (SSEA). We selected this area as our study are...

  • Feature Paper
  • Review
  • Open Access
43 Citations
7,463 Views
20 Pages

19 October 2022

Pyrites are widely distributed in marine sediments, the morphology of which is applied as a proxy to infer the redox conditions of bottom water, and identify diagenetic stages and hydrocarbon leakage activities. In this review, the methods used for t...

  • Article
  • Open Access
36 Citations
6,895 Views
25 Pages

22 April 2023

On 6 February 2023, a powerful earthquake at the border between Turkey and Syria caused catastrophic consequences and was, unfortunately, one of the deadliest earthquakes of the recent decades. The moment magnitude of the earthquake was estimated to...

  • Article
  • Open Access
8 Citations
3,050 Views
23 Pages

Fluid Migration through Permafrost and the Pool of Greenhouse Gases in Frozen Soils of an Oil and Gas Field

  • Gleb Kraev,
  • Andrei Belonosov,
  • Alexandra Veremeeva,
  • Vasilii Grabovskii,
  • Sergei Sheshukov,
  • Ivan Shelokhov and
  • Alexander Smirnov

30 July 2022

Most methane (CH4) and carbon dioxide (CO2) emissions originate from the biodegradation of organic matter of soils and of degrading permafrost in the Arctic. However, there is limited evidence of the activity of geological sources, and little underst...

  • Article
  • Open Access
4 Citations
3,600 Views
30 Pages

Geophysical and Geochemical Exploration of the Pockmark Field in the Gulf of Patras: New Insights on Formation, Growth and Activity

  • Dimitris Christodoulou,
  • George Papatheodorou,
  • Maria Geraga,
  • Giuseppe Etiope,
  • Nikos Giannopoulos,
  • Sotiris Kokkalas,
  • Xenophon Dimas,
  • Elias Fakiris,
  • Spyros Sergiou and
  • Nikos Georgiou
  • + 2 authors

19 September 2023

The Patras Gulf Pockmark field is located in shallow waters offshore Patras City (Greece) and is considered one of the most spectacular and best-documented fluid seepage activities in the Ionian Sea. The field has been under investigation since 1996,...

  • Article
  • Open Access
1,062 Views
15 Pages

Gas Hydrate Exploration Using Deep-Towed Controlled-Source Electromagnetics in the Shenhu Area, South China Sea

  • Jianping Li,
  • Zhongliang Wu,
  • Xi Chen,
  • Jian’en Jing,
  • Ping Yu,
  • Xianhu Luo,
  • Mingming Wen,
  • Pibo Su,
  • Kai Chen and
  • Meng Wang
  • + 2 authors

This study presents the first application of a deep-towed transmitter–receiver marine controlled-source electromagnetic (TTR-MCSEM) system for gas hydrate exploration in the Shenhu area of the South China Sea. High-resolution electromagnetic da...

  • Review
  • Open Access
1 Citations
1,755 Views
25 Pages

14 November 2025

Anaerobic digestion (AD) is increasingly recognized as a key technology for renewable energy generation and sustainable waste management within the circular economy. However, its performance is highly sensitive to feedstock variability and environmen...

  • Article
  • Open Access
2,169 Views
37 Pages

20 March 2025

Siderite and baryte are common non-sulphide phases in sedimentary exhalative (SEDEX) deposits, but their formation remains poorly understood. Siderite is important as an exploration vector in some deposits, whereas baryte is important as a S source i...

  • Article
  • Open Access
7 Citations
7,418 Views
21 Pages

12 August 2017

A comparison between efforts to detect methane anomalies by a simple band ratio approach from the Airborne Visual Infrared Imaging Spectrometer-Classic (AVIRIS-C) data for the Kern Front oil field, Central California, and the Coal Oil Point marine hy...

  • Article
  • Open Access
17 Citations
2,521 Views
35 Pages

The Spatial Variation of Water Clouds, NH3, and H2O on Jupiter Using Keck Data at 5 Microns

  • Gordon L. Bjoraker,
  • Michael H. Wong,
  • Imke de Pater,
  • Tilak Hewagama and
  • Máté Ádámkovics

13 September 2022

We obtained high-resolution spectra of Jupiter between 4.6 and 5.4 µm using NIRSPEC on the Keck 2 telescope in February 2017. We measured the spatial variation of NH3, H2O, and the pressure level of deep (p > 3 bar) clouds using two geometri...

  • Article
  • Open Access
408 Views
16 Pages

Delineation and Application of Gas Geological Units for Optimized Large-Scale Gas Drainage in the Baode Mine

  • Shuaiyin He,
  • Xinjiang Luo,
  • Jinbo Zhang,
  • Zenghui Zhang,
  • Peng Li and
  • Huazhou Huang

2 October 2025

Addressing the challenge of efficient gas control in high-gas coal mines with ultra-long panels, this study focuses on the No. 8 coal seam in the Baode Mine. A multi-parameter integrated methodology was developed to establish a hierarchical classific...

  • Article
  • Open Access
3 Citations
2,586 Views
21 Pages

Atmospheric CO2 and CH4 Fluctuations over the Continent-Sea Interface in the Yenisei River Sector of the Kara Sea

  • Alexey Panov,
  • Anatoly Prokushkin,
  • Igor Semiletov,
  • Karl Kübler,
  • Mikhail Korets,
  • Ilya Putilin,
  • Anastasiya Urban,
  • Mikhail Bondar and
  • Martin Heimann

31 August 2022

Observations of the atmospheric sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are extremely scarce, limiting our knowledge of carbon turnover in this climatically sensitive environment and the fate of the enormo...

  • Article
  • Open Access
3 Citations
2,426 Views
26 Pages

28 May 2022

As an environmentally friendly and high-calorific natural gas, coalbed methane (CBM) has become one of the world’s most crucial unconventional energy sources. Undoubtedly, it is necessary to conduct in-depth research on reservoir exploration me...