Showing 1–50 of 518 results

  1. Research | | Open

    • The global carbon dioxide (CO2) flux from subaerial volcanoes remains poorly quantified, limiting... ...to extrapolate the global volcanic CO2 flux have been biased by... ...relatively small number of accessible volcanoes. Here, we propose that... ...but yet unmeasured, CO2 emissions from several...
  2. Research | | Open

    • Volcanoes are the main pathway to... ...the Earth. Carbon dioxide (CO2) is of particular interest... ...forcing. Understanding the balance of CO2 that is transferred from the... ...long-term emissions of volcanic CO2 to the atmosphere. Here... ...world’s volcanic CO2 emissions that takes... ...CO2-...CO2
  3. Research | | Open

    • ...Raman spectroscopy, yielding high total CO2 (approaching 6000 ppm) and... ...entrapment of melt and exsolved CO2 and provides evidence for an... exsolved CO2 phase at magma storage depths... ...We argue that this exsolved CO2 phase played a critical role... ...(high S and CO2), even modest...
  4. Research | | Open

    • Estimating the quantity of CO2 diffusively emitted from the Earth... ...volcanic surveillance and global atmospheric CO2 budgets. However, the identification... ...of non-hydrothermal contributions to CO2 release can be ambiguous.... ...measured diffuse soil surface CO2 fluxes, together with...
  5. Research |

    • ...a shorter atmospheric lifetime than CO2 and are often assumed to... ...affect carbon sinks and atmospheric CO2, causing additional climate change.... ...Earth system model to attribute CO2 RF to direct CO2 emissions and to climate–carbon... ...%) to total RF of CO2 in 2010. Of this,... ...CO2...
  6. Research |

    • ...in the reservoirs of active volcanoes has an important bearing on... ...of magma from the Kilauea volcano. Our results are combined... ...the volatile budget of the volcano.
  7. Research | | Open

    • ...DLP) earthquakes observed beneath active volcanoes are sometimes considered as precursors... ...earthquakes observed beneath the Klyuchevskoy volcano (Kamchatka, Russia) can... ...the DLP swarms beneath active volcanoes might be related to the...
  8. Research | | Open

  9. Research |

    • ..., and the carbon cycle. CO2 concentrations in mantle-derived magmas... supplying hotspot ocean island volcanoes yield our most direct constraints... ...information at an ocean island volcano. Our CO2 concentration estimates do not rely... ..., we couple volcanic CO2 emission rates with... ...CO2...
  10. Research |

    • ...sources of mantle carbon dioxide (CO2) emission into Earth’s... ...the lithospheric mantle4–6, rift CO2 flux depends on lithospheric processes... ...System. Sources and fluxes of CO2 and helium are examined over... ...to south. Areas of diffuse CO2 degassing exhibit increasing mantle CO2 flux and...
  11. Research |

    • ...that resulted in increased volcanic CO2 emissions could have led to... ...release of carbonates at arc volcanoes and deep recycling of organic...  C to ocean island volcanoes, we find that such...
  12. Research | | Open

    • Basaltic open vent volcanoes are major global sources of... ...volcanic gases. Many of these volcanoes outgas via intermittent Strombolian-type... ...the explosions has high molar CO2/SO2 and SO2/HCl ratios...
  13. Research | | Open

    • In volcanoes with active hydrothermal systems,... diffuse CO2 degassing may constitute the primary... ...volcanic degassing. The monitoring of CO2 emissions can provide important clues... ...we report eighteen years of CO2 fluxes from the soil at... ...largest of diffuse CO2 degassing ever produced...
  14. Research | | Open

    • ...residual hydrothermalism associated with submarine volcanoes, following an eruption event,... ...role in the supply of CO2 to the ocean. The... emitted CO2 increases the acidity of seawater... . The submarine volcano of El Hierro, in... ...the effect of volcanic CO2 on the seawater carbonate...
  15. Research |

    • ...need to replace carbon dioxide (CO2)-emitting fossil fuels with... ...is the electrochemical reduction of CO2 to chemical feedstocks, which... uses both CO2 and renewable energy3–8.... ...machine learning, that efficiently reduce CO2 to ethylene with the highest... ...selective CO2 reduction17....
  16. Research | | Open

    • ...changes, volcanic degassing and atmospheric CO2, which may have modulated... ...records gradually declined, while atmospheric CO2, instead of continuing its... ...a surge in magma and CO2 fluxes from mid-ocean ridges... and oceanic hotspot volcanoes. Our results reveal a... ...atmospheric CO2...
  17. Research | | Open

    • Volcanoes with multiple summit vents present... ...compositions and fluxes for Stromboli volcano. Emissions from vent areas... ...negligible passive fluxes and are CO2-dominated, even during passive... ...-specific approach at multi-vent volcanoes and suggest that our approach... ...in volcano...
  18. Research | | Open

    • ...monitor the activity of hazardous volcanoes in recent decades. However,... ...been a key aspect of volcano monitoring since these mobile fluids... ...measuring the flux of volcanic CO2—the most reliable gas precursor... ...quantitative measurements of the volcanic CO2 flux using a newly designed...
  19. Research | | Open

    • ...present and doubled carbon dioxide (CO2) concentrations with a climate... ...reducing SO2 emissions at high CO2 concentrations will significantly enhance atmospheric... ...with that under the present CO2 concentration. In the high... ...zero under a doubled CO2 concentration will be approximately...
  20. Research |

    • ...atmosphere mostly via degassing of CO2 from active volcanoes1,2,3... ,4. CO2 can also escape along faults... ...use measurements of diffuse soil CO2, combined with carbon isotopic... ...to quantify the flux of CO2 through fault systems away from... active volcanoes in the East African Rift...
  21. Research | | Open

    • ...sites to activate H2 and CO2 molecules and enable efficient gas... -phase CO2 photocatalysis. Lattice engineering of... ...enhancing the propensity to activate CO2 molecules. The so-formed... ...atom-scale engineering in heterogeneous CO2 photocatalysis, another step towards... ...of the solar CO2...
  22. Research | | Open

    • The relevance of CO2 emissions from geological sources to... ...-term dynamics of diffusive geogenic CO2 emissions are mostly unknown.... While geogenic CO2 is considered a challenging threat... ...Stable carbon isotope monitoring of CO2 allows partitioning geogenic from anthropogenic... ...CO2...
  23. Research | | Open

  24. Research | | Open

    • ...conductivity due to carbon dioxide (CO2)-induced partial melting are... ...to the genesis of primitive CO2-rich alkali magma forming petit... -spot volcanoes at the deformation front of... ...lower lithosphere, we conclude that CO2-rich silicate melt is always...
  25. Research | | Open

  26. Research |

    • ...the upper flanks of the volcano. By combining measurements of... ...paper) with measurements of the CO2/SO2 ratio of the plume... ...that the average output of CO2 from summit crater degassing is... ...magnitude higher than the annual CO2 output from Kilauea7,8,... ...emissions of CO2 from the...
  27. Research |

  28. Research | | Open

  29. Research | | Open

  30. Research | | Open

    • ...heterogeneous methanol synthesis catalysts through CO2 hydrogenation is one of the... major topics in CO2 conversion into value-added liquid... ...method, showing excellent performance for CO2 hydrogenation to methanol. Under... ...highly active for the CO2 activation. Meanwhile, an... ...CO2...
  31. Research | | Open

  32. Research | | Open

    • Volcanic CO2 emissions play a key role... ...cycle and monitoring of volcanic CO2 fluxes helps to forecast eruptions... . The quantification of CO2 fluxes is challenging due to... rapid dilution of magmatic CO2 in CO2-rich ambient air and the... ...in the global magmatic CO2 flux inventory. Here,...CO2
  33. Research |

  34. Research | | Open

  35. Reviews |

  36. Reviews |

  37. Research | | Open

  38. Research | | Open

    • Six CO2 fixation pathways are known to... ...reveal that D. desulfuricans assimilates CO2 via the reductive glycine pathway... , a seventh CO2 fixation pathway. In this... pathway, CO2 is first reduced to formate... ...and condensed with a second CO2 to generate glycine. Glycine... ...CO2 to form...
  39. Research |

  40. Research | | Open

  41. Research | | Open

    • ...gases (including carbon dioxide, CO2) and toxic trace metals... ...SO2 emissions from over 90 volcanoes, including new constraints on... ...positive trends observed at multiple volcanoes in some regions including Vanuatu...
  42. Research | | Open

  43. Research | | Open

    • Photochemical conversion of CO2 into fuels has promise as... ...of C1–C3 hydrocarbons from CO2 and H2O. In this... ...nanoparticle/solution interface conducive for CO2 activation, while an ionic... ...conditions. Hydrocarbon turnover exhibits a volcano relationship as a function of...
  44. Research | | Open

  45. Research |

    • ...Loihi seamount, an active submarine volcano situated about 30 km south... ...and systematic changes in the CO2/3He ratios of the vent... ...has been discernible only through CO2/3He monitoring, and suggests...
  46. Research |

    • ...have identified the species Ar2·CO2, Ar·(CO2)2 and larger clusters,... and N2·O2, SF6(CO2)2 and SF6·CO2·Ar. Milne et al....
  47. Research |

    • The eruptive activity of a volcano is fundamentally controlled by the... ...of magma supply. At Kīlauea Volcano, Hawai‘i, the rate... ...supply was an increase in CO2 emissions during 2003–2004,... ...within Kīlauea, coupled with increased CO2 emissions, indicate a mantle... ...and that CO2 emissions...
  48. Research | | Open

  49. Reviews |

    • ...and photocatalytic hydrogen evolution and CO2 conversion into useful molecules.... ...heterostructures for hydrogen evolution and CO2 reduction by electrocatalysis and photocatalysis...
  50. Reviews |

    • ...is, therefore, important for volcano monitoring and forecasting. Diffusion... ...and eruption. Crystals from mafic volcanoes record timescales of days to... ...longer than those from mafic volcanoes, spanning decades to millennia,... ...adds the fourth dimension to volcano science (that is, time...