FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2094366343> ?p ?o ?g. }

• W2094366343 endingPage "195" @default.
• W2094366343 startingPage "182" @default.
• W2094366343 abstract "The presence of methane on Mars is of great interest, since one possibility for its origin is that it derives from living microbes. However, CH4 in the martian atmosphere also could be attributable to geologic emissions released through pathways similar to those occurring on Earth. Using recent data on methane degassing of the Earth, we have estimated the relative terrestrial contributions of fossil geologic methane vs. modern methane from living methanogens, and have examined the significance that various geologic sources might have for Mars. Geologic degassing includes microbial methane (produced by ancient methanogens), thermogenic methane (from maturation of sedimentary organic matter), and subordinately geothermal and volcanic methane (mainly produced abiogenically). Our analysis suggests that ∼80% of the “natural” emission to the terrestrial atmosphere originates from modern microbial activity and ∼20% originates from geologic degassing, for a total CH4 emission of ∼28.0×107 tonnes year−1. Estimates of methane emission on Mars range from 12.6×101 to 57.0×104 tonnes year−1 and are 3–6 orders of magnitude lower than that estimated for Earth. Nevertheless, the recently detected martian, Northern-Summer-2003 CH4 plume could be compared with methane expulsion from large mud volcanoes or from the integrated emission of a few hundred gas seeps, such as many of those located in Europe, USA, Mid-East or Asia. Methane could also be released by diffuse microseepage from martian soil, even if macro-seeps or mud volcanoes were lacking or inactive. We calculated that a weak microseepage spread over a few tens of km2, as frequently occurs on Earth, may be sufficient to generate the lower estimate of methane emission in the martian atmosphere. At least 65% of Earth’s degassing is provided by kerogen thermogenesis. A similar process may exist on Mars, where kerogen might include abiogenic organics (delivered by meteorites and comets) and remnants of possible, past martian life. The remainder of terrestrial degassed methane is attributed to fossil microbial gas (∼25%) and geothermal-volcanic emissions (∼10%). Global abiogenic emissions from serpentinization are negligible on Earth, but, on Mars, individual seeps from serpentinization could be significant. Gas discharge from clathrate-permafrost destabilization should also be considered. Finally, we have shown examples of potential degassing pathways on Mars, including mud volcano-like structures, fault and fracture systems, and major volcanic edifices. All these types of structures could provide avenues for extensive gas expulsion, as on Earth. Future investigations of martian methane should be focused on such potential pathways." @default.
• W2094366343 created "2016-06-24" @default.
• W2094366343 creator A5054247771 @default.
• W2094366343 creator A5086203581 @default.
• W2094366343 creator A5088847932 @default.
• W2094366343 date "2011-02-01" @default.
• W2094366343 modified "2023-10-01" @default.
• W2094366343 title "Methane emissions from Earth’s degassing: Implications for Mars" @default.
• W2094366343 cites W116145854 @default.
• W2094366343 cites W1563196180 @default.
• W2094366343 cites W1575296942 @default.
• W2094366343 cites W1908570882 @default.
• W2094366343 cites W1966294855 @default.
• W2094366343 cites W1967938249 @default.
• W2094366343 cites W1971425285 @default.
• W2094366343 cites W1974245478 @default.
• W2094366343 cites W1974607245 @default.
• W2094366343 cites W1979544946 @default.
• W2094366343 cites W1983564921 @default.
• W2094366343 cites W1983826237 @default.
• W2094366343 cites W1986692954 @default.
• W2094366343 cites W1987622845 @default.
• W2094366343 cites W1993258633 @default.
• W2094366343 cites W1993706510 @default.
• W2094366343 cites W1996730118 @default.
• W2094366343 cites W1998708595 @default.
• W2094366343 cites W1999807922 @default.
• W2094366343 cites W2000587650 @default.
• W2094366343 cites W2005492350 @default.
• W2094366343 cites W2012301166 @default.
• W2094366343 cites W2013657125 @default.
• W2094366343 cites W2014766582 @default.
• W2094366343 cites W2016973827 @default.
• W2094366343 cites W2021486238 @default.
• W2094366343 cites W2026153910 @default.
• W2094366343 cites W2027736770 @default.
• W2094366343 cites W2028633943 @default.
• W2094366343 cites W2030191756 @default.
• W2094366343 cites W2031643263 @default.
• W2094366343 cites W2032854853 @default.
• W2094366343 cites W2033114234 @default.
• W2094366343 cites W2033916817 @default.
• W2094366343 cites W2036148312 @default.
• W2094366343 cites W2042830459 @default.
• W2094366343 cites W2044482499 @default.
• W2094366343 cites W2049990873 @default.
• W2094366343 cites W2051243780 @default.
• W2094366343 cites W2052588723 @default.
• W2094366343 cites W2058598170 @default.
• W2094366343 cites W2060402141 @default.
• W2094366343 cites W2064134384 @default.
• W2094366343 cites W2067154623 @default.
• W2094366343 cites W2070923072 @default.
• W2094366343 cites W2072597866 @default.
• W2094366343 cites W2072742475 @default.
• W2094366343 cites W2074782973 @default.
• W2094366343 cites W2079074808 @default.
• W2094366343 cites W2079879613 @default.
• W2094366343 cites W2086896697 @default.
• W2094366343 cites W2090885953 @default.
• W2094366343 cites W2093754430 @default.
• W2094366343 cites W2094017836 @default.
• W2094366343 cites W2095222021 @default.
• W2094366343 cites W2095416313 @default.
• W2094366343 cites W2100973511 @default.
• W2094366343 cites W2110075944 @default.
• W2094366343 cites W2112656901 @default.
• W2094366343 cites W2115449476 @default.
• W2094366343 cites W2118736449 @default.
• W2094366343 cites W2120381021 @default.
• W2094366343 cites W2126242170 @default.
• W2094366343 cites W2131995600 @default.
• W2094366343 cites W2138337183 @default.
• W2094366343 cites W2139190083 @default.
• W2094366343 cites W2148858107 @default.
• W2094366343 cites W2152613879 @default.
• W2094366343 cites W2153135054 @default.
• W2094366343 cites W2154933890 @default.
• W2094366343 cites W2158394698 @default.
• W2094366343 cites W2163004532 @default.
• W2094366343 cites W2169275263 @default.
• W2094366343 cites W2169297716 @default.
• W2094366343 cites W2170887722 @default.
• W2094366343 cites W2171679601 @default.
• W2094366343 doi "https://doi.org/10.1016/j.pss.2010.06.003" @default.
• W2094366343 hasPublicationYear "2011" @default.
• W2094366343 type Work @default.
• W2094366343 sameAs 2094366343 @default.
• W2094366343 citedByCount "38" @default.
• W2094366343 countsByYear W20943663432012 @default.
• W2094366343 countsByYear W20943663432013 @default.
• W2094366343 countsByYear W20943663432014 @default.
• W2094366343 countsByYear W20943663432015 @default.
• W2094366343 countsByYear W20943663432016 @default.
• W2094366343 countsByYear W20943663432017 @default.
• W2094366343 countsByYear W20943663432018 @default.
• W2094366343 countsByYear W20943663432019 @default.
• W2094366343 countsByYear W20943663432021 @default.

• next