Zobrazeno 1 - 10
of 271
pro vyhledávání: '"Ariel D. Anbar"'
Autor:
Wang Zheng, Anwen Zhou, Swapan K. Sahoo, Morrison R. Nolan, Chadlin M. Ostrander, Ruoyu Sun, Ariel D. Anbar, Shuhai Xiao, Jiubin Chen
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023)
Abstract The Ediacaran Period (~635–539 Ma) is marked by the emergence and diversification of complex metazoans linked to ocean redox changes, but the processes and mechanism of the redox evolution in the Ediacaran ocean are intensely debated. Here
Externí odkaz:
https://doaj.org/article/d7aa8cd8b0994fef88b92e5dce6af61f
Autor:
Ruoyu Sun, Yi Liu, Jeroen E. Sonke, Zhang Feifei, Yaqiu Zhao, Yonggen Zhang, Jiubin Chen, Cong-Qiang Liu, Shuzhong Shen, Ariel D. Anbar, Wang Zheng
Publikováno v:
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-11 (2023)
Abstract The driving forces, kill and recovery mechanisms for the end-Permian mass extinction (EPME), the largest Phanerozoic biological crisis, are under debate. Sedimentary records of mercury enrichment and mercury isotopes have suggested the impac
Externí odkaz:
https://doaj.org/article/a53f5c4064d34b72908062a59f736038
Autor:
Geoffrey J. Gilleaudeau, Wei Wei, Mariano N. Remírez, Yi Song, Timothy W. Lyons, Steven Bates, Ariel D. Anbar, Thomas J. Algeo
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 8, Pp n/a-n/a (2023)
Abstract Continental interiors were flooded by epeiric seas during many intervals of the geologic past. Few modern analogs exist for these environments, however, and basic variables such as redox, salinity, and restriction are difficult to reconstruc
Externí odkaz:
https://doaj.org/article/46e58af5bcb2434389e055cfbd7795ff
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-4 (2022)
Externí odkaz:
https://doaj.org/article/bded1e3ab15845df94a2371ce7df492b
Autor:
Chadlin M. Ostrander, Brian Kendall, Gwyneth W. Gordon, Sune G. Nielsen, Wang Zheng, Ariel D. Anbar
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Evidence of molecular oxygen (O2) accumulation at Earth’s surface during the Archean (4.0–2.5 billion years ago, or Ga) seems to increase in its abundance and compelling nature toward the end of the eon, during the runup to the Great Oxidation Ev
Externí odkaz:
https://doaj.org/article/1dae71d856924a8ca3f2d6973a2c48c5
Publikováno v:
Frontiers in Education, Vol 7 (2022)
Surviving Extinction is an interactive, adaptive, digital learning experience through which students learn about the history of vertebrate evolution over the last 350 million years. This experience is self-contained, providing students with immediate
Externí odkaz:
https://doaj.org/article/69bf76fdae044546beeeb3010c4bd608
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
The early Earth’s atmosphere had very low oxygen levels for hundreds of millions of years, until the 2.4 Ga Great Oxidation Event, which remains poorly understood. Here, the authors show that reducing Archean volcanic gases could have prevented atm
Externí odkaz:
https://doaj.org/article/88b11af823444112967ea95e8b8127a0
Autor:
K. Supriya, Chris Mead, Ariel D. Anbar, Joshua L. Caulkins, James P. Collins, Katelyn M. Cooper, Paul C. LePore, Tiffany Lewis, Amy Pate, Rachel A. Scott, Sara E. Brownell
Publikováno v:
Frontiers in Education, Vol 6 (2021)
Institutions across the world transitioned abruptly to remote learning in 2020 due to the COVID-19 pandemic. This rapid transition to remote learning has generally been predicted to negatively affect students, particularly those marginalized due to t
Externí odkaz:
https://doaj.org/article/8317271deb284a8daf15a201e740846b
Autor:
Marc Neveu, Ariel D. Anbar, Alfonso F. Davila, Daniel P. Glavin, Shannon M. MacKenzie, Charity M. Phillips-Lander, Brent Sherwood, Yoshinori Takano, Peter Williams, Hajime Yano
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 7 (2020)
Evidence suggests that Saturn's icy moon Enceladus has a subsurface ocean that sources plumes of water vapor and ice vented to space from its south pole. In situ analyses of this material by the Cassini spacecraft have shown that the ocean contains k
Externí odkaz:
https://doaj.org/article/e44f025a0b3a4cdd90dacbe67a667634
Publikováno v:
Atmosphere, Vol 11, Iss 5, p 533 (2020)
There is significant iron deposition in the oceans, approximately 14–16 Tg annually from mineral dust aerosols, but only a small percentage (approx. 3%) of it is soluble and, thus, bioavailable. In this work, we examine the effect of mineralogy, pa
Externí odkaz:
https://doaj.org/article/183a66240616412d85cccd238f3abe5f