Manifestation of the 2011 Great Tohoku Tsunami on the Coast of the Kuril Islands: A Tsunami with Ice     

Victor Kaistrenko  Nadezhda Razjigaeva  Andrey Kharlamov  Alexander Shishkin 《Pure and Applied Geophysics》2013,170(6-8):1103-1114

The tsunami generated by the 2011 Tohoku Earthquake (M _w = 9.0) reached maximum heights of about 5 m along the coast of the Kuril Islands. The most essential feature of this event was sea ice about 0.5 m thick moved by the ocean water. The tsunami did not cause any essential damage on the Kuril Islands, but significantly affected coastal zones and produced interesting effects. The problem of a tsunami accompanied by marine ice is discussed and illustrated with photos.  相似文献   

http://www.sciencedirect.com/science/article/pii/S1674987111000806     

Vsevolod Prokofiev  Ivan Baksheev  Lidiya Zorin  Boris Belyatsky  Vladimir Ustinov  Nadezhda Krivitskaya 《地学前缘(英文版)》2012,3(1):59-71

Zoned tourmaline（schorl-dravite） in the matrix of hydrothermal explosive breccia and ore veins in gold deposits,Chita region.Eastern Transbaikalia.Russia,are associated with Na- and K-rich porphyry-type subvolcanic intrusives.δ¹⁸O values of tourmaline from three gold deposits（Darasun. Talatui,Teremkinskoye） are +8.3‰,+7.6‰,and +6.0‰and calculatedδ¹⁸O values of fluids responsible for the tourmalinization are +7.3‰,+7.7‰,and +4.2‰,respectively.These data imply an igneous fluid source,except at the Teremkin deposit where mixing with meteoric water is indicated.Wide ranges of Fe³⁺/Fe_tot,and the presence of vacancies characterize the Darasun deposit tourmaline indicating wide ranges of f（O₂） and pH of mineralizing fluids.Initial stage tourmalines from the gold deposits of the Darasun ore district are dravite or high mg schorl.Second stage tourmaline is characterized by oscillatory zoning but with Fe generally increasing towards crystal rims indicating decreasing temperature.Third stage tourmaline formed unzoned crystals with x_Mg（mole fraction of Mg） close to that of the hrst stage tourmaline,due to a close association with pyrite and arsenopyrite.From Fe³⁺/Fe_tot values,chemical composition and crystallization temperatures.logf（O₂） of mineralizing fluids ranged from ca.—25 to—20. much higher than for the gold-bearing beresite—listvenite association,indicating that tourmalinization was not related to gold mineralization.  相似文献   

Present-day variations of the minimum runoff of the Volga basin rivers     

M. V. Bolgov  E. A. Korobkina  M. D. Trubetskova  M. K. Filimonova  I. A. Filippova 《Russian Meteorology and Hydrology》2014,39(3):187-194

Carried out is the analysis of stationarity of minimum runoff series in summer and winter for the Volga basin rivers. Two conditionally homogeneous periods are singled out within the temporal variations of these characteristics, and the date of their change varies throughout the territory of the basin. The considerable rise in air temperature in winter on the whole territory of the Volga basin is demonstrated as a result of the analysis of meteorological parameters. The relationship between runoff variations and wintertime temperature variations is proposed for predicting the minimum runoff. The distribution of minimum values of runoff is computed using this dependence and the forecast method based on the sum of distributions.  相似文献   

Marine sediment contamination of an industrial site at Port of Bagnoli, Gulf of Naples, Southern Italy   总被引：1，自引：0，他引：1  

Romano E  Ausili A  Zharova N  Celia Magno M  Pavoni B  Gabellini M 《Marine pollution bulletin》2004,49(5-6):487-495

For almost one century an important steel plant has been active at the Bagnoli industrial area (Naples, Southern Italy). The environmental survey of near shore and offshore sediments has been carried out as fundamental part of a clean up project. The characteristics of the area, supposed type of pollution, national and international protocols in force were taken into consideration in designing sampling schemes and selecting analytical parameters. For this work, sediment grain size, PAHs, PCBs, trace elements, total hydrocarbons and organic matter were considered. Factor analysis evidenced two main types of pollution in the proximity of the industrial plant, both probably attributable to the activity of the industrial site. The first one, due to Cd, Pb, Zn and Mn seems determined by localised activities at the southern part of the plant. The second one, due to Fe and Mn, appears directly linked to the whole contaminated area.  相似文献   

Broadband observations of the transient X-ray pulsar SAX J2103.5+4545     

E. V. Filippova  A. A. Lutovinov  P. E. Shtykovsky  M. G. Revnivtsev  R. A. Burenin  V. A. Aref'ev  M. N. Pavlinsky  R. A. Sunyaev 《Astronomy Letters》2004,30(12):824-833

We investigated the optical, X-ray, and gamma-ray variability of the pulsar SAX J2103.5+4545. Our timing and spectral analyses of the X-ray and gamma-ray emissions from the source using RXTE and INTEGRAL data show that the shape of its spectrum in the energy range 3–100 keV is virtually independent of its intensity and the orbital phase. Based on XMM-Newton data, we accurately (5″) localized the object and determined the optical counterpart in the binary. We placed upper limits on the variability of the latter in the Hα line on time scales of the orbital and pulse periods, respectively.  相似文献   

Bayesian prediction of minimum river runoff under nonstationary conditions of future climate change     

M. V. Bolgov  E. A. Korobkina  I. A. Filippova 《Russian Meteorology and Hydrology》2016,41(7):497-503

The problem of runoff prediction taking into account the possible climate change is considered using the Bayesian approach. The proposed technique is applied to the probabilistic forecasting of minimum runoff variations on the rivers of the Volga River basin.  相似文献   

Lake Shira, a Siberian salt lake: ecosystem structure and function. 1. Major physico-chemical and biological features     

Tatyana A. Zotina  Alexander P. Tolomeyev  Nadezhda N. Degermendzhy 《International Journal of Salt Lake Research》1999,8(3):211-232

The specific composition, vertical distribution and daily migration of plankton in a meromictic salt lake, Lake Shira, have been investigated. The main structural components of the ecosystem are bacteria, algae and crustaceans. Since the late 1970s, blue-green algae are reported as dominant. Nowadays the phytoplankton is dominated by Lyngbya contorta, Microcystis ichtyoblabe (Cyanophyta), Cyclotella tuberculata (Bacillariophyta) and Dictyosphaerium tetrachotomum (Chlorophyta). The zooplankton of Lake Shira comprises Arctodiaptomus salinus (Copepoda), Brachionus plicatilis and Hexarthra oxiuris (Rotatoria). Investigation revealed a stratified vertical distribution of all dominant species except Cyclotella with a maximum at a depth of 12--15 m during the summer growth period. Zooplanktons differ in the pattern of distribution and daily migration, but most zooplankton tend to concentrate near the surface. The possible reasons for the vertical distribution of the plankton are discussed.  相似文献   

On the Forecast of Long-Term Changes in the Hydrological Regime of Rivers Using the Results of Climate Modeling     

Bolgov  M. V.  Filippova  I. A.  Korobkina  E. A.  Trubetskova  M. D. 《Water Resources》2018,45(2):17-21

Water Resources - A method is proposed for probabilistic forecasting of river flow under non-stationary conditions based on the Bayesian approach and using the results of climatic system modeling....  相似文献   

RadioAstron Science Program Five Years after Launch: Main Science Results     

N. S. Kardashev  A. V. Alakoz  A. S. Andrianov  M. I. Artyukhov  W. Baan  V. E. Babyshkin  N. Bartel  O. S. Bayandina  I. E. Val’tts  P. A. Voitsik  A. Z. Vorobyov  C. Gwinn  J. L. Gomez  G. Giovannini  D. Jauncey  M. Johnson  H. Imai  Y. Y. Kovalev  S. E. Kurtz  M. M. Lisakov  A. P. Lobanov  V. A. Molodtsov  B. S. Novikov  A. V. Pogodin  M. V. Popov  A. S. Privesenzev  A. G. Rudnitski  G. M. Rudnitski  T. Savolainen  T. V. Smirnova  A. M. Sobolev  V. A. Soglasnov  K. V. Sokolovsky  E. N. Filippova  V. V. Khartov  M. E. Churikova  A. E. Shirshakov  V. I. Shishov  P. Edwards 《Solar System Research》2017,51(7):535-554

The RadioAstron ground-space interferometer provides the highest angular resolution achieved now in astronomy. The detection of interferometric fringes from quasars with this angular resolution on baselines of 100–200 thousand km suggests the brightness temperatures which exceed the Compton limit by two orders of magnitude. Polarimetric measurements on ground-space baselines have revealed fine structure testifying to recollimation shocks on scales of 100–250 μas and a helical magnetic field near the base of radio emission in BL Lacertae. Substructure within a the scattering disk of pulsar emission on interferometer baselines (from 60000 to 250000 km) was discovered. This substructure is produced by action of the interstellar interferometer with an effective baseline of about 1 AU and the effective angular resolution of better than 1 μas. Diameters of scattering disks were measured for several pulsars, and distances to diffusing screens were evaluated. The ground-space observations of sources of the maser radiation in lines of water and hydroxyl have shown that the maser sources in star-forming regions remain unresolved on baselines, which considerably exceed the Earth diameter. These very compact and bright features with angular sizes of about 20–60 μas correspond to linear sizes of about 5–10 million km (several solar diameters).  相似文献   

The outburst of the X-ray nova GRS 1739-278 in September 2016     

I. A. Mereminskiy  E. V. Filippova  R. A. Krivonos  S. A. Grebenev  R. A. Burenin  R. A. Sunyaev 《Astronomy Letters》2017,43(3):167-174

During the scanning observations of the Galactic center region in late August–September 2016 we detected a new (third) outburst of the historical X-ray nova GRS 1739-278, a presumed black hole in a low-mass X-ray binary. This was reported in the Astronomer’s Telegrams (Mereminskiy et al. 2016). In this paper we present the results of INTEGRAL and Swift observations of the outburst development. According to these observations, the flux from the source in the hard X-ray band (20–60 keV) rose from ~11 (September 3) to ~30 mCrab (September 14), was at the attained level for ~8 days, and then returned to ~15 mCrab. The spectrum of the source taken at its peak brightness in the energy range 0.5–150 keV could be fitted by a single power law with a photon index of 1.86 ± 0.07 distorted only by photoabsorption corresponding to the hydrogen column density log₁₀ (N _H) = 22.37 under the assumption of a solar abundance. This means that the source at this time was in the low/hard state. Infrared observations with the RTT-150 telescope near the X-ray brightness peak of the source revealed no emission down to \(22_ \cdot ^m 0\) (in the r’ band) and \(20_ \cdot ^m 9\) (in the i’ band). At the time of writing the paper we do not yet know whether this outburst ended or only its initial stage was observed. If it ended, then based on the light curve and spectra, we can state that it was a “failed” outburst, i.e., the amount of accreted matter in this episode was insufficient to reach the high or very high state with a soft blackbody component in the spectrum characteristic of developed outbursts.  相似文献