Науки о Земле и смежные экологические науки список научных статей
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Automated detection of microearthquakes in continuous noisy records produced by local ocean bottom seismographs or coastal networks
Records of seismic waves produced by local ocean bottom seismographs (OBS) or coastal networks are noisy. The noises, such as high-amplitude microquakes, different anthropogenic noises related to engineering works, explosions, land and sea transport noises, microseisms, or the high-frequency...
2019 / Krylov A.A., Lobkovsky L.I., Ivashchenko A.I.
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Virtual magnetograms -- a tool for the study of geomagnetic response to the solar wind/IMF driving
Processes of the solar-wind/magnetosphere interaction can be monitored by magnetic records on the ground from the worldwide array of stations. However, a serious drawback of the analysis of ground-based magnetograms is the inevitable variation of the magnetic response due to continual changes of...
2019 / Kozyreva O.V., Pilipenko V.A., Soloviev A.A., Engebretson M.J. -
Bottom circulation in the Norwegian Sea
We study bottom circulation in the Norwegian Sea in the region of nuclear submarine wreck. A numerical model (INMOM) with a high vertical and horizontal resolution in the bottom layers is applied for the estimates of bottom velocities and direction of currents as well as their stability. The model...
2019 / Morozov E.G., Frey D.I., Diansky N.A., Fomin V.V. -
Study of the contourite drift north of the Kane Gap (eastern equatorial Atlantic)
The sediment drift north of the Kane Gap has been investigated by means of the seismoacoustic profiling. The surface area of the drift is about 500 km$^2$ and maximal thickness is 70 m. The contourite drift was formed under the control of the Antarctic Bottom Water (AABW) flow in the Kane Gap. It...
2019 / Sivkov V.V., Bashirova L.D., Dorokhova E.V., Kapustina M.V., Ponomarenko E.P. -
An underground research laboratory: new opportunities in the study of the stress-strain state and dynamics of rock mass destruction
According to the existing international requirements, construction of an underground research laboratory that allows to obtain parameters of a host rock mass is a mandatory initial stage when siting a deep geological repository for high-level radioactive waste. The main idea of the basic...
2019 / Tatarinov V.N., Morozov V.N., Batugin A.S. -
Variability of hydrological and hydrochemical conditions of Gotland and Gdansk basins' bottom waters (Baltic Sea) in 2015--2016
The field data set obtained in 2015--2016 in the south-eastern part of the Baltic Sea within the exclusive economic zone (EEZ) of the Russian Federation revealed a rise in the values of the hydrological characteristics of the Gdansk and Gotland (southern slope) Basins bottom layer. It was caused by ...
2019 / Krechik V.A., Kapustina M.V., Lukashin V.N., Ezhova E.E. -
Application of GPS/GSM Lagrangian mini-drifters for coastal ocean dynamics analysis
This paper describes our experience in the application of Lagrangian mini-drifters in studies of coastal water circulation. As shown by our experiments in the Southeastern Baltic Sea, an application of Lagrangian mini-drifters makes it possible to detect the presence of complex sub-mesoscale vortex ...
2019 / Krayushkin Evgeny, Lavrova Olga, Strochkov Alexey -
Latitudinal variation of ionospheric TEC at Northern Hemispheric region
This paper includes the study of diurnal, monthly, annual and seasonal variation of total electron content (TEC) at low, mid and high latitude in the Northern Hemispheric region. We have also correlated the TEC variation with the solar proxies (viz. $Dst$, $Kp$ index, F10.7~cm and sunspot number)....
2019 / Parwani Mahesh, Atulkar Roshni, Mukherjee Shweta, Purohit P.K. -
Analysis of solar, interplanetary, and geomagnetic parameters during solar cycles 22, 23, and 24
We have analyzed the trend of solar, interplanetary, and geomagnetic (SIG) parameters during solar cycles 22, 23, and 24. The sunspot numbers ($R$), solar flux index ($F_{10.7}$) and Lyman Alpha ($L$) indicate periodic trend during each solar cycle. In solar cycle 24 sunspot numbers ($R$),...
2019 / Adhikari Binod, Subodh Dahal, Mishra Roshan Kumar, Sapkota Nirakar, Chhatkuli Daya Nidhi, Sapkota Santosh Ballav, Adhikari Sarala, Chapagain Narayan P. -
Geodynamics of the Lomonosov Ridge in the Central Arctic
The deep-water basin on the Lomonosov Ridge in Central Arctic was rapidly formed on a shallow water shelf in the early Miocene. The continuity of the main seismic reflectors in the sedimentary cover of the ridge indicates no significant crustal stretching during the subsidence. The absence of large ...
2019 / Artyushkov E.V., Chekhovich P.A. -
On the correlation of seismic activity to syzygies
There must be hundreds of papers dedicated to the studies of the relationship between lunar phases and seismic activity on Earth; half of them claim to prove that lunar phases affect seismic activity on Earth, while the other half disprove the same. It is shown here that the lunar phases indeed...
2019 / Kovalyov Mikhail -
Electrical conductivity features of the Arctic shelf permafrost and electromagnetic technologies for their studies
The change in the ice conditions in the Arctic made it possible to study vast areas of the shelf by geophysical methods, including electromagnetic ones. The structure of the Arctic shelf subsea permafrost differs from the well-studied continental permafrost due to its accelerating degradation...
2018 / Piskunova E.A., Palshin N.A., Yakovlev D.V. -
Experimental study of the influence of thawing permafrost on the chemical properties of sea water
In a warming environment, permafrost thawing can play a significant role in the chemical composition of coastal waters in the Arctic region. It is a potential source of organic and inorganic forms of nutrients, as well as heavy metals and pollutants. To estimate the permafrost thawing influence on...
2018 / Pogojeva M., Yakushev E., Ilinskaya A., Polukhin A., Braaten H.-F., Kristiansen T. -
Currents and water structure north of the Vema Channel
We consider measurements of currents north of the Vema Channel with the goal to find continuations of the bottom water flow after Antarctic Bottom Water leaves the Vema Channel and discharges to the Brazil Basin. We found two smaller channels of the continuation of this flow, one of which is...
2018 / Morozov E.G., Tarakanov R. Yu., Frey D.I., Borisov D.G. -
Seasonal variability of tides in the Arctic seas
The long-term mean harmonic and nonharmonic tidal characteristics and their seasonal changes were estimated for six tide-gauge stations in the Russian Arctic (White, Laptev and Chukchi Seas). The estimation is based on hourly sea level observations. Significant differences in the seasonal...
2018 / Kulikov M.E., Medvedev I.P., Kondrin A.T. -
Changes in surface conditions east of the Reykjanes Ridge (North Atlantic) during the Late Pleistocene to Holocene cold events
The article presents data on the study of the AI-3359 marine sediment core recovered from the North Atlantic (east of the Reykjanes Ridge) during the Late Pleistocene to Holocene (the last 45,000 years). The data on ice-rafted debris (IRD) and N.~pachyderma~(s) distribution together with changes in ...
2018 / Savkina K.E., Bashirova L.D., Novichkova E.A. -
Wave steepness from satellite altimetry for wave dynamics and climate studies
Wave steepness is presented as an extension and a valuable add-on to the conventional set of sea state parameters retrieved from satellite altimetry data. Following physical model based on recent advances of weak turbulence theory wave steepness is estimated from directly measured spatial gradient...
2018 / Badulin S., Grigorieva V., Gavrikov A., Geogjaev V., Krinitskiy M., Markina M. -
Metallogeny of lithium through geological time
The intensity of lithium accumulation through geological time has been analyzed. For this purpose we used the data on mineral deposits which have already exploited or potentially are of economic interest and which contain at least $0.1 \times 106$ tons of Li$_2$O. Their formation was pronounced...
2018 / Tkachev A.V., Rundqvist D.V., Vishnevskaya N.A. -
An approach to finding an integral characteristic of ionospheric and lightning activity from WWLLN observational data
An integral parameter for estimating the ionospheric and lightning activity (Ionosphere [ampersand] Lightning Intention Index, I[ampersand]LII) has been proposed. This parameter is derived from the spectrogram of a signal recorded in the frequency range of 9 to 11 kHz at a World Wide Lightning...
2018 / Kudryavtsev N.G., Kudin D.V., Uchaikin E.O. -
Framboidal pyrite formation in the bottom sediments of the South Caspian Basin under conditions of hydrogen sulfide contamination
Structural features and distribution of framboidal pyrite were studied during lithological, mineralogical and geochemical studies of sediments in the South Caspian Basin. The lithological and geochemical parameters affecting the intensity of the formation of authigenic pyrite in sediments of the...
2018 / Kozina N., Reykhard L., Dara O., Gordeev V.
