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1.
Nikolay Sidorenkov 《Celestial Mechanics and Dynamical Astronomy》2003,87(1-2):27-38
Spectral analysis of the components of the relative atmospheric angular momentum vector is performed based on the series of these components for the 6 h intervals within the period of 1958–2000. These series have been computed in the Subbureau of the Atmospheric Angular Momentum of the International Earth Rotation Service using the NCEP/NCAR reanalysis of atmospheric observations. The basic harmonics of diurnal tides are determined. New results on the fortnight's and week's duration oscillations of the equatorial components of the atmospheric angular momentum are obtained. The zonal tides transformation mechanisms in the atmosphere are discussed. It is shown that the main mechanism of the zonal tides effect on the atmospheric variability is the amplitude modulation of daily oscillations of the relative atmospheric angular momentum. The effects of the atmospheric tides on the Earth rotation are discussed. 相似文献
2.
Gated communities of the Moscow green belt: newly segregated landscapes and the suburban Russian environment 总被引:3,自引:0,他引:3
The transition from the Soviet to the post-Soviet period in and near Moscow manifested itself in increasing production of
segregated space both in the urban core and suburban areas outside of the beltway to accommodate the preferences of the new
Russian business and governmental elite. This paper focuses on the residential single-family housing inside old and new settlements,
which are frequently gated. Approximately 260 of such suburban communities have been developed within 30 km of the beltway
during the past few years, of which a majority have some form of exclusion mechanism in place, typically tall solid fences,
gates, closed-circuit video surveillance and guarded entry checkpoints. The difference in exclusivity varies from the most
exclusive older communities inside Moscow Serebryany Bor enclave and Rublevskoe highway mansions to less exclusive new developments
along Novorizkhskoe and Dmitrovskoe highways. Despite high rates of construction, based on sociological surveys in 2003, only
about 11% of Russia’s upper class claimed to live in such new “cottages,” with the rest owning condos and luxury apartments
in the inner city or older detached homes in villages and small towns. Therefore, not all the needs have been accommodated
and more development is certain to take place. The environmental impact of such developments is profound. Based on preliminary
LANDSAT image analysis, almost 22% of suburban “green belt” forested land within 30 km zone has been converted to new construction
from 1991 to 2001. New construction is now focusing on the remaining fragments of natural vegetation, which will likely lower
air quality and water quality available for the city. Ironically, the new developments advertise themselves as “clean and
green” with massive investments in unnatural landscaping (seeded lawns, exotic shrubs, river and lake shore “improvements”).
This investment highlights the well-known paradox of development in which people move out of town to live near nature, while
destroying the wild nature they come to enjoy.
“We left city for the weekend
It was raining, saw no stars
There were fences everywhere
Our chiefs behind the bars.”
Gennady Shpalikov 相似文献
3.
A. B. Kotov A. A. Sorokin E. B. Sal’nikova A. P. Sorokin A. M. Larin S. D. Velikoslavinskii T. V. Belyakov I. V. Anisimova S. Z. Yakovleva 《Doklady Earth Sciences》2009,429(2):1457-1461
U-Pb geochronological results confirm the Mesozoic age (124 ± 1 Ma) of the Beket granitoid complex, previously interpreted
as being one of the markers amongst the Early Proterozoic magmatic complexes within the Amur superterrane (microcontinent)
of the Central Asian Fold Belt. This implies that the structural and metamorphic amphibolite facies overprints documented
either in the Beket granitoids or Gonzha host rocks are evidently Mesozoic rather than Early Proterozoic in age. 相似文献
4.
Alar Rosentau Merle Muru Aivar Kriiska Dmitry A. Subetto Jüri Vassiljev Tiit Hang Dmitry Gerasimov Kerkko Nordqvist Anna Ludikova Lembi Lõugas Hanna Raig Kersti Kihno Raivo Aunap Nikolay Letyka 《Boreas: An International Journal of Quaternary Research》2013,42(4):912-931
Based on geological and archaeological proxies from NW Russia and NE Estonia and on GIS‐based modelling, shore displacement during the Stone Age in the Narva‐Luga Klint Bay area in the eastern Gulf of Finland was reconstructed. The reconstructed shore displacement curve displays three regressive phases in the Baltic Sea history, interrupted by the rapid Ancylus Lake and Litorina Sea transgressions c. 10.9–10.2 cal. ka BP and c. 8.5–7.3 cal. ka BP, respectively. During the Ancylus transgression the lake level rose 9 m at an average rate of about 13 mm per year, while during the Litorina transgression the sea level rose 8 m at an average rate of about 7 mm per year. The results show that the highest shoreline of Ancylus Lake at an altitude of 8–17 m a.s.l. was formed c. 10.2 cal. ka BP and that of the Litorina Sea at an altitude of 6–14 m a.s.l., c. 7.3 cal. ka BP. The oldest traces of human activity dated to 8.5–7.9 cal. ka BP are associated with the palaeo‐Narva River in the period of low water level in the Baltic basin at the beginning of the Litorina Sea transgression. The coastal settlement associated with the Litorina Sea lagoon, presently represented by 33 Stone Age sites, developed in the area c. 7.1 cal. ka BP and existed there for more than 2000 years. Transformation from the coastal settlement back to the river settlement indicates a change from a fishing‐and‐hunting economy to farming and animal husbandry c. 4.4 cal. ka BP, coinciding with the time of the overgrowing of the lagoon in the Narva‐Luga Klint Bay area. 相似文献
5.
S. D. Velikoslavinskii A. B. Kotov E. B. Salnikova A. M. Larin A. A. Sorokin A. P. Sorokin V. P. Kovach E. V. Tolmacheva S. Z. Yakovleva I. V. Anisimova 《Doklady Earth Sciences》2012,444(2):661-665
According to the results of U-Pb geochronological investigations, the age of the amphibolite protoliths (metabasalts) in the Ust??-Gilyui sequence within the Stanovoi Complex of the Amazar-Gilyui structural and formational zone in the Selenga-Stanovoi Superterrain of the Central Asian fold belt can be estimated at 193 ± 1 Ma. The Nd model age of the Ust??-Gilyui metasedimentary rocks is in the interval of t Nd(DM) = 1.1?C3.1 Ga. This information along with the previously obtained geochronological data are indicative of the fact that the Ust??-Gilyui sequence consists of metasedimentary and metavolcanic rocks of various ages: (1) volcanic rocks with the age of 193 ± 1 Ma; (2) metasedimentary and metavolcanic rocks broken through by the Paleozoic granitoids dated to 370 Ma and characterized by minimum estimations of t Nd(DM) = 1.1 Ga, i.e., rocks with an age of 1.1?C0.4 Ga. In addition, it is quite possible that this sequence also includes more ancient rocks. The SSS Amazar-Gilyui structural and formational zone is likely to be a tectonic mélange composed of the metasedimentary and metavolcanic rocks of the Mesozoic and, probably, Paleozoic and Early Precambrian ages. The studied zone was formed in the Mesozoic, most likely, in the course of the collision processes initiated by the closing up of the Mongol-Okhotsk Ocean. 相似文献
6.
Structural analysis of low-grade rocks highlights the allochthonous character of Mesozoic schists in southeastern Rhodope, Bulgaria. The deformation can be related to the Late Jurassic–Early Cretaceous thrusting and Tertiary detachment faulting. Petrologic and geochemical data show a volcanic arc origin of the greenschists and basaltic rocks. These results are interpreted as representing an island arc-accretionary complex related to the southward subduction of the Meliata–Maliac Ocean under the supra-subduction back-arc Vardar ocean/island arc system. This arc-trench system collided with the Rhodope in Late Jurassic times. To cite this article: N.G. Bonev, G.M. Stampfli, C. R. Geoscience 335 (2003). 相似文献
7.
Isotope provinces, mechanisms of generation and sources of the continental crust in the Central Asian mobile belt: geological and isotopic evidence 总被引:17,自引:0,他引:17
V. I. Kovalenko V. V. Yarmolyuk V. P. Kovach A. B. Kotov I. K. Kozakov E. B. Salnikova A. M. Larin 《Journal of Asian Earth Sciences》2004,23(5):605-627
The available geological, geochronological and isotopic data on the felsic magmatic and related rocks from South Siberia, Transbaikalia and Mongolia are summarized to improve our understanding of the mechanisms and processes of the Phanerozoic crustal growth in the Central Asian mobile belt (CAMB). The following isotope provinces have been recognised: ‘Precambrian’ (TDM=3.3–2.9 and 2.5–0.9 Ga) at the microcontinental blocks, ‘Caledonian’ (TDM=1.1–0.55 Ga), ‘Hercynian’ (TDM=0.8–0.5 Ma) and ‘Indosinian’ (TDM=0.3 Ga) that coincide with coeval tectonic zones and formed at 570–475, 420–320 and 310–220 Ma. Continental crust of the microcontinents is underlain by, or intermixed with, ‘juvenile’ crust as evidenced by its isotopic heterogeneity. The continental crust of the Caledonian, Hercynian and Indosinian provinces is isotopically homogeneous and was produced from respective juvenile sources with addition of old crustal material in the island arcs or active continental margin environments. The crustal growth in the CAMB had episodic character and important crust-forming events took place in the Phanerozoic. Formation of the CAMB was connected with break up of the Rodinia supercontinent in consequence of creation of the South-Pacific hot superplume. Intraplate magmatism preceding and accompanying permanently other magmatic activity in the CAMB was caused by influence of the long-term South-Pacific plume or the Asian plume damping since the Devonian. 相似文献
8.
Marina Ulyanova Vadim Sivkov Timur Kanapatskij Pavel Sigalevich Nikolay Pimenov 《Geo-Marine Letters》2012,32(5-6):535-544
New data from surveys of gas-bearing mud areas in the Gdansk Deep (southeastern Baltic Sea) were collected during four research cruises in 2009–2011. These revealed the presence of seven large pockmarks apart from the three already known, and enabled significant improvement of the existing digital map of gassy mud distribution. Based on geochemical sediment analyses, calculated diffusive methane fluxes from the upper (0–5?cm) seabed layer into near-bottom waters were highest—3.3?mmol/(m2?day)—in pockmark mud, contrasting strongly with the minimum value of 0.004?mmol/(m2?day) observed in typical, background mud. However, fluxes of less than 0.1?mmol/(m2?day) were observed in all sediment types, including pockmarks. In a newer attempt to roughly estimate budgets at a more regional scale, diffusive methane venting amounts to 280?×?106?mmol/day for southeastern Baltic Sea muddy sediments. Elongated pockforms in the southern Gotland Deep, known since the end of the 1980s as pockmarks, had methane concentrations that were similar to those of gassy mud from the Gdansk Basin, and there was no geo-acoustic evidence of considerably increased gas levels. 相似文献
9.
I. K. Larin 《Izvestiya Atmospheric and Oceanic Physics》2016,52(2):147-153
This review covers the most significant Russian studies in atmospheric chemistry conducted from 2011 to 2014. This is part of the Russian National Report on the Meteorology and Atmospheric Sciences prepared for the International Association of Meteorology and Atmospheric Sciences (IAMAS). The report was considered and approved by the XXVI General Assembly of the International Union of Geodesy and Geophysics (IUGG).1 The review is appended by a list of publications by Russian scientists for 2011–2014 covering the field of atmospheric chemistry research. 相似文献
10.
Characteristics of the current state of transportation problems along the Northern Sea Route are given. The required ice data necessary to guarantee the safety of navigation are discussed. A variety of developing transportation prospects along the Northern Sea Route, including international aspects, are disputed. Effective economic alternatives of the Northern Sea Route under the conditions of the current Russian economic crisis are analyzed. 相似文献