“Prometheus (volcano)”的意思、由来-开放百科全书

Prometheus consists of a {{convert|28|km|sp=us|adj=on}}-wide volcanic pit named Prometheus Patera and a {{convert|100|km|sp=us|adj=on}}-long compound lava flow, all surrounded by reddish sulfur and circular, bright sulfur dioxide volcanic plume deposits.^[3] The volcano was first observed in images acquired by the Voyager 1 spacecraft in March 1979.^[4] Later that year, the International Astronomical Union named this feature after a Greek fire god, Prometheus.

Prometheus is the site of a volcanic eruption that has been ongoing since at least the Voyager 1 encounter in 1979. Between the Voyager encounters and the first observations by Galileo, a {{convert|6700|km2|sp=us|adj=on}} flow field was emplaced.^[5] Later Galileo observations of this flow field revealed numerous small breakouts, particularly on the western end of the flow field.^[6]

Prometheus is the site of two volcanic eruption plumes: a small, sulfur-rich plume erupting from the magma-source vent at the eastern end of the flow field and a {{convert|75|to|100|km|adj=on|sp=us}}-tall, {{Chem|SO|2}}-rich dust plume erupting from the active flow front at the other end.^[3] The former forms a diffuse, red deposit to the east of the Prometheus flow field. The latter forms a bright, circular deposit surrounding the entire volcano and lava flow. The {{Chem|SO|2}}-rich plume is generated as lava at the western end of the flow field covers sulfur dioxide frost, heating and vaporizing it.^[7] This is accomplished at multiple breakouts, generating gas and dust for the visible dust plume.^[8] Prometheus' plume has been observed by both Voyager spacecraft, Galileo, and New Horizons, at every appropriate imaging opportunity.

References

1. ^{{Cite journal | last1 = Leone | first1 = G. | last2 = Gerard Davies | first2 = A. | last3 = Wilson | first3 = L. | last4 = Williams | first4 = D. A. | last5 = Keszthelyi | first5 = L. P. | last6 = Jaeger | first6 = W. L. | last7 = Turtle | first7 = E. P. | title = Volcanic history, geologic analysis and map of the Prometheus Patera region on Io | doi = 10.1016/j.jvolgeores.2009.07.019 | journal = Journal of Volcanology and Geothermal Research | volume = 187 | pages = 93 | year = 2009 | pmid = | pmc = |bibcode = 2009JVGR..187...93L }}
2. ^{{cite web | last=Blue | first=Jennifer | date=October 1, 2008 |url=http://planetarynames.wr.usgs.gov/jsp/FeatureTypesData2.jsp?systemID=5&bodyID=7&typeID=11&system=Jupiter&body=Io&type=Eruptive%20center&sort=AName&show=Fname&show=Lat&show=Long&show=Diam&show=Stat&show=Orig | title=Io Nomenclature: Eruptive center | publisher=USGS | accessdate=2008-10-01 }}
3. ^¹{{cite book |last=Davies |first=A. |title=Volcanism on Io: A Comparison with Earth |year=2007 |publisher=Cambridge University Press |isbn=0-521-85003-7 |pages=208–216 |chapter=Prometheus and Amirani: effusive activity and insulated flows }}
4. ^{{cite journal |title=The Jupiter system through the eyes of Voyager 1 |journal=Science |last=Smith |first=B. A. |display-authors=etal |pages=951–972 |volume=204 |issue= 4396|year=1979 |doi=10.1126/science.204.4396.951 |pmid=17800430 |bibcode=1979Sci...204..951S}}
5. ^{{cite journal |title=Active Volcanism on Io as Seen by Galileo SSI |journal=Icarus |last=McEwen |first=A. S. |display-authors=etal |pages=181–219 |volume=135 |issue= |year=1998| doi = 10.1006/icar.1998.5972 | bibcode = 1998Icar..135..181M}}
6. ^{{cite journal |title=Imaging of volcanic activity on Jupiter's moon Io by Galileo during the Galileo Europa Mission and the Galileo Millennium Mission |journal=J. Geophys. Res. |last=Keszthelyi |first=L. |display-authors=etal |pages=33025–33052 |volume=106 |issue= |year=2001 |doi=10.1029/2000JE001383|bibcode = 2001JGR...10633025K }}
7. ^{{cite journal |title=Prometheus: Io's Wandering Plume |journal=Science |last=Kieffer |first=S.W. |display-authors = etal |pages=1204–1208 |volume=288 |issue=5469 |year=2000 |doi=10.1126/science.288.5469.1204|bibcode = 2000Sci...288.1204K}}
8. ^{{cite journal |title=Observations and initial modeling of lava-{{Chem|SO|2}} interactions at Prometheus, Io |journal=J. Geophys. Res. |last=Milazzo |first=M. P. |display-authors=etal |pages=33121–33128 |volume=106 |issue= |year=2001 |doi=10.1029/2000JE001410|bibcode = 2001JGR...10633121M }}

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References