Dynamics of Fine Particle Emissions in Open Pit Mines

Izvestiya, Physics of the Solid Earth - Abstract—Mass industrial explosions on extended benches of open pits are the most effective way to crush rock. Such explosions are accompanied by the...     

Advanced Production of Quasi-Definitive Magnetic Observatory Data of the INTERMAGNET Standard

Geomagnetism and Aeronomy - The system for the preparation of quasi-definitivedata of the INTERMAGNET standard is described. Unlike the final data, which was prepared no earlier than 1 year after...     

Variability of currents in the coastal zone of the Black Sea from long-term measurements with a bottom mounted ADCP

The results of long-term measurements (16 months) of the current??s velocity in the Black Sea coastal zone near Golubaya Bukhta (Blue Bay) by a bottom mounted acoustic Doppler current profiler (ADCP) are presented and discussed. It was found that the alongshore component of the current dominates and its absolute value is an order of magnitude larger than the absolute value of the normal to the shore component. The annual average value of the alongshore current??s velocity is close to zero. A well pronounced oscillatory mode of the alongshore current??s velocity is revealed. This mode is characterized by quasi-periodic changes in the direction of the alongshore current. The maximal amplitudes of the unidirectional alongshore current??s velocity are observed with a time scale from several hours to several days.     

Marine gravity measurements without referencing to the coastal base stations

The experience of areal gravity surveying in the open ocean with the correction of measurements by the EGM2008 gravity field model is described. It is concluded that correction of the gravimeter measurements by the model data is admissible and reasonable.     

Measurements of the atmospheric turbulence in the coastal zone of the sea during weak wind from a mountainous coast

Results of measurements of the atmospheric turbulence in the layer between 1.5 and 21 m above sea level and the drag coefficient of the sea surface as the wind blows from a 4-km-long mountainous slope with a mean inclination of 11° are presented. The measurements of wind-speed profiles and its fluctuations at several levels, waves, and the main meteorological parameters were carried out in autumn 2005 and 2008 from a stationary platform located in the Black Sea at a distance of approximately 1 km from the southern coast of Crimea. It is shown that during weak synoptic wind a low-level wind jet develops at night over the sea with a maximum velocity up to 5–6 m/s at a level of approximately 6 m over the sea induced by the katabatic wind over the coastal slope. According to the approximate estimates, the horizontal scale of the low-level jet can reach a few tens of kilometers. This flow is characterized by the dissipation rate of the turbulence energy independent of height and low-frequency velocity fluctuations related to the gravity waves and advection of turbulence from the coast. It is shown that the lower part of the boundary layer (up to a height of 3 m) is adjusted to the sea-surface roughness. The dependencies of the drag coefficient on the wind speed or wave age are steadier than in the data for the open sea. However, the age of the waves is not a universal parameter at long and short fetches.     

Autonomous system for vertical profiling of the marine environment at a moored station

This paper presents new results of the research and development project on the moored profiler Aqualog aimed at multidisciplinary studies and ecological monitoring of the marine environment. The data on the profiler’s operation are summarized based upon the field experiments in the northeastern Black Sea in 2011. An important scientific result obtained by using the profiler during the experiments was the discovery of the countercurrent below the Black Sea Rim Current in the layer between the 500 m and 900 m depth.     

LA–ICP–MS Isotopic U–Pb Age of Zircon from the Eldzhurty Granites and Rhyolites at the Tyrnyauz Mo–W Deposit (North Caucasus,Russia)

Doklady Earth Sciences - The isotopic U–Pb ages are estimated for zircons (for the first time by the LA–ICP–MS method) from biotite (Eldzhurty) granites and for the first time...     

U–Pb Isotope Age of Zircon (LA–ICP–MS Method) from Magmatic Rocks and Some Aspects of the Genesis of the Tyrnyauz Mo–W Deposit (North Caucasus)

Geology of Ore Deposits - The authors' determinations of the U–Pb isotopic age of zircon (LA–ICP–MS method) in the main types of igneous rocks emphasize the presence of both...     

An Approach for Studying of the Earth’s Crust Structure at Full Thickness by Means of River Seismic Exploration

Doklady Earth Sciences - The possibility of using river seismic data for oil and gas exploration to study the deep structure of the Earth’s crust is shown. This method uses water seismic...