The vanishing cryovolcanoes of Ceres
Ahuna Mons is a 4 km tall mountain on Ceres interpreted as a geologically young cryovolcanic dome. Other possible cryovolcanic features are more ambiguous, implying that cryovolcanism is only a recent phenomenon or that other cryovolcanic structures have been modified beyond easy identification. We...
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| Veröffentlicht in: | Geophysical research letters 2017-02, Vol.44 (3), p.1243-1250 |
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| container_title | Geophysical research letters |
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| creator | Sori, Michael M. Byrne, Shane Bland, Michael T. Bramson, Ali M. Ermakov, Anton I. Hamilton, Christopher W. Otto, Katharina A. Ruesch, Ottaviano Russell, Christopher T. |
| description | Ahuna Mons is a 4 km tall mountain on Ceres interpreted as a geologically young cryovolcanic dome. Other possible cryovolcanic features are more ambiguous, implying that cryovolcanism is only a recent phenomenon or that other cryovolcanic structures have been modified beyond easy identification. We test the hypothesis that Cerean cryovolcanic domes viscously relax, precluding ancient domes from recognition. We use numerical models to predict flow velocities of Ahuna Mons to be 10–500 m/Myr, depending upon assumptions about ice content, rheology, grain size, and thermal parameters. Slower flow rates in this range are sufficiently fast to induce extensive relaxation of cryovolcanic structures over 108–109 years, but gradual enough for Ahuna Mons to remain identifiable today. Positive topographic features, including a tholus underlying Ahuna Mons, may represent relaxed cryovolcanic structures. A composition for Ahuna Mons of >40% ice explains the observed distribution of cryovolcanic structures because viscous relaxation renders old cryovolcanoes unrecognizable.
Key Points
We hypothesize that viscous flow significantly modifies cryovolcanic structures on Ceres
We find that cryovolcanoes on Ceres are modified on 107–109 year timescales if they are >40% ice by volume
Viscous relaxation as a modification mechanism is consistent with cryovolcanism occurring throughout Cerean history |
| doi_str_mv | 10.1002/2016GL072319 |
| format | Article |
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Key Points
We hypothesize that viscous flow significantly modifies cryovolcanic structures on Ceres
We find that cryovolcanoes on Ceres are modified on 107–109 year timescales if they are >40% ice by volume
Viscous relaxation as a modification mechanism is consistent with cryovolcanism occurring throughout Cerean history</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2016GL072319</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Ceres ; Ceres asteroid ; cryovolcanism ; Dawn ; Domes ; Flow rate ; Flow rates ; Flow velocity ; Geology ; Geophysics ; Grain size ; Historical structures ; Ice ; Mathematical models ; Mountains ; Numerical models ; Parameter identification ; Parameter modification ; Planets ; Recognition ; Rheological properties ; Rheology ; thermal modeling ; Thermal properties ; Thermodynamic properties ; Topography ; viscous flow ; Volcanoes</subject><ispartof>Geophysical research letters, 2017-02, Vol.44 (3), p.1243-1250</ispartof><rights>2017. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a5709-825ff99b8cdc81913eccba133011546c90043e77a24dce770ef4b38710e7da363</citedby><cites>FETCH-LOGICAL-a5709-825ff99b8cdc81913eccba133011546c90043e77a24dce770ef4b38710e7da363</cites><orcidid>0000-0002-6735-4685 ; 0000-0002-7020-7061 ; 0000-0002-0675-1177 ; 0000-0003-1639-8298 ; 0000-0001-9731-517X ; 0000-0003-4903-0916 ; 0000-0002-6191-2447</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2016GL072319$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2016GL072319$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,11514,27924,27925,45574,45575,46409,46468,46833,46892</link.rule.ids></links><search><creatorcontrib>Sori, Michael M.</creatorcontrib><creatorcontrib>Byrne, Shane</creatorcontrib><creatorcontrib>Bland, Michael T.</creatorcontrib><creatorcontrib>Bramson, Ali M.</creatorcontrib><creatorcontrib>Ermakov, Anton I.</creatorcontrib><creatorcontrib>Hamilton, Christopher W.</creatorcontrib><creatorcontrib>Otto, Katharina A.</creatorcontrib><creatorcontrib>Ruesch, Ottaviano</creatorcontrib><creatorcontrib>Russell, Christopher T.</creatorcontrib><title>The vanishing cryovolcanoes of Ceres</title><title>Geophysical research letters</title><description>Ahuna Mons is a 4 km tall mountain on Ceres interpreted as a geologically young cryovolcanic dome. Other possible cryovolcanic features are more ambiguous, implying that cryovolcanism is only a recent phenomenon or that other cryovolcanic structures have been modified beyond easy identification. We test the hypothesis that Cerean cryovolcanic domes viscously relax, precluding ancient domes from recognition. We use numerical models to predict flow velocities of Ahuna Mons to be 10–500 m/Myr, depending upon assumptions about ice content, rheology, grain size, and thermal parameters. Slower flow rates in this range are sufficiently fast to induce extensive relaxation of cryovolcanic structures over 108–109 years, but gradual enough for Ahuna Mons to remain identifiable today. Positive topographic features, including a tholus underlying Ahuna Mons, may represent relaxed cryovolcanic structures. A composition for Ahuna Mons of >40% ice explains the observed distribution of cryovolcanic structures because viscous relaxation renders old cryovolcanoes unrecognizable.
Key Points
We hypothesize that viscous flow significantly modifies cryovolcanic structures on Ceres
We find that cryovolcanoes on Ceres are modified on 107–109 year timescales if they are >40% ice by volume
Viscous relaxation as a modification mechanism is consistent with cryovolcanism occurring throughout Cerean history</description><subject>Ceres</subject><subject>Ceres asteroid</subject><subject>cryovolcanism</subject><subject>Dawn</subject><subject>Domes</subject><subject>Flow rate</subject><subject>Flow rates</subject><subject>Flow velocity</subject><subject>Geology</subject><subject>Geophysics</subject><subject>Grain size</subject><subject>Historical structures</subject><subject>Ice</subject><subject>Mathematical models</subject><subject>Mountains</subject><subject>Numerical models</subject><subject>Parameter identification</subject><subject>Parameter modification</subject><subject>Planets</subject><subject>Recognition</subject><subject>Rheological properties</subject><subject>Rheology</subject><subject>thermal modeling</subject><subject>Thermal properties</subject><subject>Thermodynamic properties</subject><subject>Topography</subject><subject>viscous flow</subject><subject>Volcanoes</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqN0cFKAzEQBuAgCtbqzQdY0IMHqzPJ7CY5StEqLAhSz0uaZu2W7aYmbqVvb6QexIN6mjl888PwM3aKcIUA_JoDFpMSJBeo99gANdFIAch9NgDQaeeyOGRHMS4BQIDAATufLly2MV0TF033ktmw9RvfWtN5FzNfZ2MXXDxmB7Vpozv5mkP2fHc7Hd-PysfJw_imHJlcgk7xeV1rPVN2bhVqFM7amUEhADGnwmoAEk5Kw2lu0wRX00woieDk3IhCDNnFLncd_Gvv4lu1aqJ1bWs65_tYoVKEyNPlP6iUijgQJXr2gy59H7r0SFJaAs81_qEkl8SJZFKXO2WDjzG4ulqHZmXCtkKoPjuovneQON_x96Z1219tNXkq85yUFh9L6YL1</recordid><startdate>20170216</startdate><enddate>20170216</enddate><creator>Sori, Michael M.</creator><creator>Byrne, Shane</creator><creator>Bland, Michael T.</creator><creator>Bramson, Ali M.</creator><creator>Ermakov, Anton I.</creator><creator>Hamilton, Christopher W.</creator><creator>Otto, Katharina A.</creator><creator>Ruesch, Ottaviano</creator><creator>Russell, Christopher T.</creator><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-6735-4685</orcidid><orcidid>https://orcid.org/0000-0002-7020-7061</orcidid><orcidid>https://orcid.org/0000-0002-0675-1177</orcidid><orcidid>https://orcid.org/0000-0003-1639-8298</orcidid><orcidid>https://orcid.org/0000-0001-9731-517X</orcidid><orcidid>https://orcid.org/0000-0003-4903-0916</orcidid><orcidid>https://orcid.org/0000-0002-6191-2447</orcidid></search><sort><creationdate>20170216</creationdate><title>The vanishing cryovolcanoes of Ceres</title><author>Sori, Michael M. ; Byrne, Shane ; Bland, Michael T. ; Bramson, Ali M. ; Ermakov, Anton I. ; Hamilton, Christopher W. ; Otto, Katharina A. ; Ruesch, Ottaviano ; Russell, Christopher T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a5709-825ff99b8cdc81913eccba133011546c90043e77a24dce770ef4b38710e7da363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Ceres</topic><topic>Ceres asteroid</topic><topic>cryovolcanism</topic><topic>Dawn</topic><topic>Domes</topic><topic>Flow rate</topic><topic>Flow rates</topic><topic>Flow velocity</topic><topic>Geology</topic><topic>Geophysics</topic><topic>Grain size</topic><topic>Historical structures</topic><topic>Ice</topic><topic>Mathematical models</topic><topic>Mountains</topic><topic>Numerical models</topic><topic>Parameter identification</topic><topic>Parameter modification</topic><topic>Planets</topic><topic>Recognition</topic><topic>Rheological properties</topic><topic>Rheology</topic><topic>thermal modeling</topic><topic>Thermal properties</topic><topic>Thermodynamic properties</topic><topic>Topography</topic><topic>viscous flow</topic><topic>Volcanoes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sori, Michael M.</creatorcontrib><creatorcontrib>Byrne, Shane</creatorcontrib><creatorcontrib>Bland, Michael T.</creatorcontrib><creatorcontrib>Bramson, Ali M.</creatorcontrib><creatorcontrib>Ermakov, Anton I.</creatorcontrib><creatorcontrib>Hamilton, Christopher W.</creatorcontrib><creatorcontrib>Otto, Katharina A.</creatorcontrib><creatorcontrib>Ruesch, Ottaviano</creatorcontrib><creatorcontrib>Russell, Christopher T.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sori, Michael M.</au><au>Byrne, Shane</au><au>Bland, Michael T.</au><au>Bramson, Ali M.</au><au>Ermakov, Anton I.</au><au>Hamilton, Christopher W.</au><au>Otto, Katharina A.</au><au>Ruesch, Ottaviano</au><au>Russell, Christopher T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The vanishing cryovolcanoes of Ceres</atitle><jtitle>Geophysical research letters</jtitle><date>2017-02-16</date><risdate>2017</risdate><volume>44</volume><issue>3</issue><spage>1243</spage><epage>1250</epage><pages>1243-1250</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>Ahuna Mons is a 4 km tall mountain on Ceres interpreted as a geologically young cryovolcanic dome. Other possible cryovolcanic features are more ambiguous, implying that cryovolcanism is only a recent phenomenon or that other cryovolcanic structures have been modified beyond easy identification. We test the hypothesis that Cerean cryovolcanic domes viscously relax, precluding ancient domes from recognition. We use numerical models to predict flow velocities of Ahuna Mons to be 10–500 m/Myr, depending upon assumptions about ice content, rheology, grain size, and thermal parameters. Slower flow rates in this range are sufficiently fast to induce extensive relaxation of cryovolcanic structures over 108–109 years, but gradual enough for Ahuna Mons to remain identifiable today. Positive topographic features, including a tholus underlying Ahuna Mons, may represent relaxed cryovolcanic structures. A composition for Ahuna Mons of >40% ice explains the observed distribution of cryovolcanic structures because viscous relaxation renders old cryovolcanoes unrecognizable.
Key Points
We hypothesize that viscous flow significantly modifies cryovolcanic structures on Ceres
We find that cryovolcanoes on Ceres are modified on 107–109 year timescales if they are >40% ice by volume
Viscous relaxation as a modification mechanism is consistent with cryovolcanism occurring throughout Cerean history</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/2016GL072319</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-6735-4685</orcidid><orcidid>https://orcid.org/0000-0002-7020-7061</orcidid><orcidid>https://orcid.org/0000-0002-0675-1177</orcidid><orcidid>https://orcid.org/0000-0003-1639-8298</orcidid><orcidid>https://orcid.org/0000-0001-9731-517X</orcidid><orcidid>https://orcid.org/0000-0003-4903-0916</orcidid><orcidid>https://orcid.org/0000-0002-6191-2447</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Ceres Ceres asteroid cryovolcanism Dawn Domes Flow rate Flow rates Flow velocity Geology Geophysics Grain size Historical structures Ice Mathematical models Mountains Numerical models Parameter identification Parameter modification Planets Recognition Rheological properties Rheology thermal modeling Thermal properties Thermodynamic properties Topography viscous flow Volcanoes |
| title | The vanishing cryovolcanoes of Ceres |
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