HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Institute of Low Temperature Science >
Peer-reviewed Journal Articles, etc >

Simulation of cryovolcanism on Saturn's moon Enceladus with the Green-Naghdi theory of thermoelasticity

Files in This Item:
Bargmann_etal_2008_BGR.pdf645.48 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/34791

Title: Simulation of cryovolcanism on Saturn's moon Enceladus with the Green-Naghdi theory of thermoelasticity
Other Titles: ”Green-Naghdi”熱弾性理論を用いた土星の衛星”エンケラドゥス”の氷火山噴出活動のシミュレーション
Authors: Bargmann, Swantje Browse this author
Greve, Ralf Browse this author →KAKEN DB
Steinmann, Paul Browse this author
Keywords: Enceladus
Cryovolcanism
Heat transport
Thermoelasticity
Green-Naghdi theory
Issue Date: 10-Aug-2008
Publisher: Japanese Society of Snow and Ice
Journal Title: Bulletin of Glaciological Research
Volume: 26
Start Page: 23
End Page: 32
Abstract: In 2005, the Cassini spacecraft proved the existence of cryovolcanism, i.e., the icy counterpart of volcanism on Earth, on Saturn's moon Enceladus during its close fly-bys. In particular, water-rich plume venting was discovered in the south polar region. Thus, Enceladus was found to be one out of three outer solar bodies to be geologically active. This contribution is concerned with the modeling and computation of this phenomenon. For the underlying thermoelastic description of ice at cryogenic temperatures, we resort to the Green-Naghdi approach. The Green-Naghdi theory includes the classical Fourier approach, but, in addition to that, it is a lot more general as it also allows for other types of heat propagation. The numerical implementation is carried out with the help of the finite element method. Results show that lateral spreading of internal and surface warming away from an active volcanic vent increases strongly with increasing contribution of the non-classical heat flux. Agreement with available high-resolution surface temperature data based on infrared spectrometry seems to be best if the non-classical heat flux contributes significantly to the total heat transport. Complementary laboratory studies would be required in order to strengthen this speculative, yet promising idea.
Type: article (author version)
URI: http://hdl.handle.net/2115/34791
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Greve Ralf

Export metadata:

OAI-PMH ( junii2 , jpcoar )


 

Feedback - Hokkaido University