D'Orbigny is the sixth and by far the largest angrite known. Its bulk chemical and mineral chemical compositions, rare gas abundances and oxygen and rare gas isotope compositions fit the compositional ranges known from ...

We report measurements of the equilibrium D/H fractionation factor (α) between methane and hydrogen in the temperature range 200-500°C. Isotopic equilibrium was achieved by recycling the gases over a Ni-Thoria catalyst, ...

Long-continued observations of water-level fluctuations and air pressure changes in the southern Baikal area were compared with the Baikal seismicity to reveal periods when the fluctuations had much greater amplitudes prior ...

Seismologists usually describe the change in the amplitude of seismic waves with distance R in terms of a power equation such as A =B/Rn. This equation is often used to analyze experimental results on underground explosions. ...

Mokoia is a CV3 chondrite that contains abundant phyllosilicate mineralization. We present a detailed petrographic and scanning electron microscopic study of 24 dark inclusions (DIs) that we found in Mokoia. The overall ...

The standard chemical potentials μso of aqueous solutes over a wide range of temperatures and pressures are needed to calculate phase and chemical equilibria in hydrothermal systems. The standard derivative thermodynamic ...

Here we quantify the abundance and distribution of three primary permafrost region disturbances (PRD; lakes and their dynamics, wildfires, retrogressive thaw slumps) using trend analysis of 30-m resolution Landsat imagery ...

A data processing and storage system for records of wave disturbances in the atmosphere generated by volcanic eruptions is described. The system was developed using acoustic signals recorded during eruptions of Kamchatkan ...