气候变化领域集成服务门户(CCPortal): Thickness of Lava Flows Within the Northern Smooth Plains on Mercury as Estimated by Partially Buried Craters

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DOI	10.1029/2020GL090578
	Thickness of Lava Flows Within the Northern Smooth Plains on Mercury as Estimated by Partially Buried Craters
	Du J.; Wieczorek M.A.; Fa W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Partially and completely buried impact craters are widely distributed over the northern smooth plains of Mercury. Using imagery data acquired from the MESSENGER mission, we compiled a database of 257 partially buried and 765 completely buried craters on Mercury. The elevation profiles of fresh craters were constructed, and by inputting these into a topographic degradation model, we estimated the lava flow thicknesses around partially buried craters. Along the edges of the northern smooth plains, lava flow thicknesses were inverted to be 23–536 m with a median of 228 m. Lava flow thicknesses on Mercury are twice that on the Moon, possibly due to a denser crust on Mercury that favors the ascent of magmas or to higher production rates of magmas. The topographic diffusivity used for crater degradation on Mercury is 3 times that for lunar craters, which is likely a result of a higher cratering rate on Mercury. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geophysics; Crater degradations; Degradation model; Imagery data; Impact craters; Lava flows; Production rates; Earth sciences; crater; lava flow; Mercury (planet); satellite mission
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169555
作者单位	Institute of Remote Sensing and Geographical Information System, School of Earth and Space Sciences, Peking University, Beijing, China; Laboratoire Lagrange, Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Nice, France; State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau; CAS Center for Excellence in Comparative Planetology, Hefei, China
推荐引用方式 GB/T 7714	Du J.,Wieczorek M.A.,Fa W.. Thickness of Lava Flows Within the Northern Smooth Plains on Mercury as Estimated by Partially Buried Craters[J],2020,47(20).
APA	Du J.,Wieczorek M.A.,&Fa W..(2020).Thickness of Lava Flows Within the Northern Smooth Plains on Mercury as Estimated by Partially Buried Craters.Geophysical Research Letters,47(20).
MLA	Du J.,et al."Thickness of Lava Flows Within the Northern Smooth Plains on Mercury as Estimated by Partially Buried Craters".Geophysical Research Letters 47.20(2020).