Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Houser, Christine"'
The hydrogen isotopic (D/H) ratio reflects the global cycling and evolution of water on Earth as it fractionates through planetary processes. We model the water cycle taking seafloor hydrothermal alteration, chemical alteration of continental crust,
Externí odkaz:
http://arxiv.org/abs/1806.03792
Autor:
Ballmer, Maxim D., Houser, Christine, Hernlund, John W., Wentzcovitch, Renata M., Hirose, Kei
Publikováno v:
Nature Geoscience (2017), 10, 236-240
The composition of the lower mantle $-$ comprising 56% of Earth's volume $-$ remains poorly constrained. Among the major elements, Mg/Si ratios ranging from $\sim$0.9$-$1.1, such as in rocky solar-system building blocks (or chondrites), to $\sim$1.2$
Externí odkaz:
http://arxiv.org/abs/1803.08026
Autor:
Tasker, Elizabeth, Tan, Joshua, Heng, Kevin, Kane, Stephen, Spiegel, David, Brasser, Ramon, Casey, Andrew, Desch, Steven, Dorn, Caroline, Houser, Christine, Hernlund, John, Lasbleis, Marine, Laneuville, Matthieu, Libert, Anne-Sophie, Noack, Lena, Unterborn, Cayman, Wicks, June
Publikováno v:
Nature Astronomy, Volume 1, id. 0042 (2017)
We have found many Earth-sized worlds but we have no way of determining if their surfaces are Earth-like. This makes it impossible to quantitatively compare habitability, and pretending we can risks damaging the field.
Comment: Published in Natu
Comment: Published in Natu
Externí odkaz:
http://arxiv.org/abs/1708.01363
Autor:
Valencia-Cardona, Juan J., Shukla, Gaurav, Wu, Zhongqing, Houser, Christine, Yuen, David A., Wentzcovitch, Renata M.
The iron spin crossover in ferropericlase introduces anomalies in its thermodynamics and thermoelastic properties. Here we investigate how these anomalies can affect the lower mantle geotherm. The effect is examined in mantle aggregates consisting of
Externí odkaz:
http://arxiv.org/abs/1610.08412