气候变化领域集成服务门户(CCPortal): Impact melting of frozen oceans on the early Earth: Implications for the origin of life

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DOI	10.1073/pnas.91.4.1248
	Impact melting of frozen oceans on the early Earth: Implications for the origin of life
	Bada J.L.; Bigham C.; Miller S.L.
发表日期	1994
ISSN	0027-8424
起始页码	1248
结束页码	1250
卷号	91 期号:4
英文摘要	Without sufficient greenhouse gases in the atmosphere, the early Earth would have become a permanently frozen planet because the young Sun was less luminous than it is today. Several resolutions to this faint young Sun- frozen Earth paradox have been proposed, with an atmosphere rich in CO2 being the one generally favored. However, these models assume that there were no mechanisms for melting a once frozen ocean. Here we show that bolide impacts between about 3.6 and 4.0 billion years ago could have episodically melted an ice-covered early ocean. Thaw-freeze cycles associated with bolide impacts could have been important for the initiation of abiotic reactions that gave rise to the first living organisms.
语种	英语
scopus关键词	carbon dioxide; ice; air temperature; atmosphere; biogenesis; environmental temperature; freezing; geography; greenhouse effect; mathematical analysis; model; oceanic regions; priority journal; review; steady state; thawing
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159019
作者单位	Bada, J.L., Scripps Institution of Oceanography, Univ. of California at San Diego, San Diego, CA 92093-0212, United States; Bigham, C., Scripps Institution of Oceanography, Univ. of California at San Diego, San Diego, CA 92093-0212, United States; Miller, S.L., Department of Chemistry, Univ. of California at San Diego, San Diego, CA 92093-0317, United States
推荐引用方式 GB/T 7714	Bada J.L.,Bigham C.,Miller S.L.. Impact melting of frozen oceans on the early Earth: Implications for the origin of life[J],1994,91(4).
APA	Bada J.L.,Bigham C.,&Miller S.L..(1994).Impact melting of frozen oceans on the early Earth: Implications for the origin of life.Proceedings of the National Academy of Sciences of the United States of America,91(4).
MLA	Bada J.L.,et al."Impact melting of frozen oceans on the early Earth: Implications for the origin of life".Proceedings of the National Academy of Sciences of the United States of America 91.4(1994).