Late proterozoic A-type granites of the chernorechenskii massif in the Yenisei ridge: New geochemical and geochronological data     

I. I. Likhanov  V. V. Reverdatto  P. S. Kozlov  V. V. Khiller  A. D. Nozhkin 《Doklady Earth Sciences》2014,455(1):279-283

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Fragmentation of the “bag-breakup” type as a mechanism of the generation of sea spray at strong and hurricane winds     

Yu. I. Troitskaya  O. S. Ermakova  A. A. Kandaurov  D. S. Kozlov  D. A. Sergeev  S. S. Zilitinkevich 《Doklady Earth Sciences》2017,477(1):1330-1335

Experiments on generation mechanisms of sea water spray under hurricane wind were performed using shadow illumination high-speed video recording from several camera positions. Classification of fragmentation mechanism leading to generation of spray was conducted. Statistics of the events causing generation of spray was studied. A phenomenological model was developed based on the methods of statistical physics to describe the “bag-breakup” generation mechanism. The function of spray generation was conducted on this basis, which describes well the experimental data obtained under hurricane winds in the natural and laboratory conditions.  相似文献   

Satellite Atmospheric Sounder IRFS-2 1. Analysis of Outgoing Radiation Spectra Measurements     

Polyakov  A. V.  Timofeyev  Yu. M.  Virolainen  Ya. A.  Uspensky  A. B.  Zavelevich  F. S.  Golovin  Yu. M.  Kozlov  D. A.  Rublev  A. N.  Kukharsky  A. V. 《Izvestiya Atmospheric and Oceanic Physics》2017,53(9):1185-1191

Izvestiya, Atmospheric and Oceanic Physics - The outgoing radiation spectra measured by the IRFS-2 spectrometer onboard Meteor-M no. 2 satellite have been analyzed. Some statistical parameters of...  相似文献   

Internal tide in the Kara Gates Strait     

E. G. Morozov  I. E. Kozlov  S. A. Shchuka  D. I. Frey 《Oceanology》2017,57(1):8-18

We observed strong internal tidal waves in the Kara Gates Strait. Internal tides are superimposed over a system of mean currents from the Barents to the Kara Sea. Field studies of internal tides in the Kara Gates were performed in 1997, 2007, and 2015. In 2015, we analyzed data from towed CTD measurements, numerical model calculations, and satellite images in the region. An internal tidal wave with a period of 12.4 h is generated due to the interaction between the currents of the barotropic tide and the bottom relief on the slopes of a ridge that crosses the strait from Novaya Zemlya to the continent. The depths of the ridge crest are 30–40 m. A constant current of relatively warm water flows from the Barents to the Kara Sea. An internal wave propagates in both directions from the ridge. In the Barents Sea, internal waves are intensified by the current from the Barents to the Kara Sea. Internal bores followed by a packet of short-period internal waves are found in both directions from the strait. Satellite images show that short-period internal waves are generated after the internal bore. A hydraulic jump was found on the eastern side of the strait. Numerical modeling agrees with the experimental results.  相似文献   

Incipient metamorphism between Ufa and Beloretzk, western fold-and-thrust belt, southern Urals, Russia     

I. Matenaar  U. A. Glasmacher  W. Pickel  U. Giese  V. N. Pazukhin  V. I. Kozlov  V. N. Puchkov  L. Stroink  R. Walter 《International Journal of Earth Sciences》1999,87(4):545-560

The low-temperature thermal history of Paleozoic and Precambrian shales and slates was studied in detail along a NW–SE transect between Ufa and Beloretzk in the western fold-and-thrust belt of the southern Urals, Russia. The aim of the investigations was to compare four thermal parameters, namely illite and chlorite crystallinity, vitrinite reflectance, and Conodont color alteration index (CAI), in order to quantify the finite (i.e. maximum) thermal grade. The transect extends from Devonian to Permian sedimentary units of the pre-Uralian foredeep, crossing Precambrian siliciclastic and carbonate units of the Bashkirian megaanticlinorium into the Paleozoic units of the Ural-Tau antiform. In general, the four methods indicate similar metamorphic grades of the samples. The finite thermal grade ranges from lower diagenesis (R_o=0.9%, CIS-FWHM_ill001ad=0.770 Δ°2Θ, CIS-FWHM_chl002ad=0.447 Δ°2Θ, CAI=1.5) in the pre-Uralian foredeep to epizone (CIS-FWHM_ill001ad=0.243 Δ°2Θ, CIS-FWHM_chl002ad=0.252 Δ°2Θ, CAI=6) in the eastern part of the Bashkirian mega-anticlinorium and the Zilair synclinorium. All parameters show a sudden change in value at thrust boundaries and an increase in metamorphic grade with stratigraphic age within structural units. In comparison, the westernmost Precambrian units of the Ala-Tau-anticlinorium are characterized by thermal grades of lower diagenesis. Magmatic dikes cause a wide variation of the thermal grade in the western part of the Bashkirian megaanticlinorium. Also in areas with an intensive cleavage development (Zilair synclinorium) the finite thermal grade shows a stronger relationship towards the deformation than the stratigraphic position.  相似文献   

Evolution of a Gas–Dust Cloud in the Upper Atmosphere: Analysis of Events October 26, 2017     

Nikolayshvili  S. Sh.  Kozlov  S. I.  Platov  Yu. V.  Repin  A. Yu. 《Geomagnetism and Aeronomy》2019,59(4):488-492

Geomagnetism and Aeronomy - A sequence of digital images of a gas–dust cloud of combustion products of solid fuel that formed during the separation of rocket stages is analyzed. The images...  相似文献   

Ore Genesis Laws in Subduction Zones     

N.?O.?SorokhtinEmail author  L.?I.?Lobkovsky  N.?E.?Kozlov 《Oceanology》2018,58(1):107-115

This paper considers and validates questions related to the multistage enrichment of the Earth’s crust in ore elements in subduction zones. We discuss some physical and chemical parameters of metamorphism and hydrothermal transformation of structural material complexes in these areas. The spatiotemporal patterns of ore genesis are demonstrated with the example of metallogeny of the Ural and Verkhoyansk–Kolyma fold belts.  相似文献