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Loki Patera is the largest volcanic depression on Jupiter's moon Io, in diameter. It contains an active lava lake, with an episodically overturning crust. The level of activity seen is similar to a superfast spreading mid-ocean ridge on Earth.〔Rosaly M.C. Lopes and Tracy K.P. Gregg (2004). (Lava Lakes on Jupiter’s Moon Io (abstract) )〕 Temperature measurements of thermal emission at Loki Patera taken by ''Voyager 1'' Io's lava lakes such as Loki Patera are depressions partially filled with molten lava covered by a thin solidified crust. These lava lakes are directly connected to a magma reservoir below. Observations of thermal emission at several of Io's lava lakes reveal glowing molten rock along Loki Patera's margin, caused by the lake's crust breaking up along the edge of the patera. Over time, because the solidified lava is denser than the still-molten magma below, this crust can flounder, triggering an increase in thermal emission at the volcano. At sites such as Loki Patera, this can occur episodically. During an overturning episode, Loki can emit up to ten times more heat than when its crust is stable.〔 During an eruption, a wave of foundering crust spreads out across the patera at the rate of about per day, until the crust of the lake has been resurfaced. Another eruption would begin once the new crust has cooled and thickened enough for it to no longer be buoyant over the molten lava. Loki Patera is located at . It is named after the Norse god Loki.〔(【引用サイトリンク】 work=lnfm1.sai.msu.su )〕 Amaterasu Patera is located to the north and Manua Patera to the northwest. ==See also== *Volcanism on Io *List of volcanic features on Io 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Loki Patera」の詳細全文を読む スポンサード リンク
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