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The diverse environment-protective role of vegetation is highlighted in the context of economic development of southern territories of Baikalian Siberia. Results from geobotanical forecasting for the purpose of minimizing ecological risks of nature management are presented. 相似文献
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L. F. Kopaevich A. S. Alekseev A. M. Nikishin V. N. Ben’yamovskii E. V. Yakovishina E. A. Sokolova A. I. Voznesenskii 《Moscow University Geology Bulletin》2007,62(3):164-172
This paper presents data on the structure of reference sections of the Maastrichtian-Danian boundary beds and the assemblages of benthic and planktonic foraminifers enclosed in these rocks. These are based on examination of the reference sections in two different structure-facies zones of the Mountainous Crimea: the Kacha Uplift and Indol-Kuban Trough. The strongly different lithologic and foraminifer assemblages in these sections indicate the presence of completely different water masses in the shelf part of the marine basin with water depths varying from those of the middle-lower sublittoral zone (in the Belbek, Beshkosh, and Chakhmakhly sections in the southwestern part of the Mountainous Crimea) to those of the pelagic environment on the continental slope and at the continental rise (section in Mount Klement’ev in the Indol-Kuban Trough). These assemblages indicate the sedimentation environment in the transition zone between the Kacha shelf and the deep-water Black Sea Basin. 相似文献
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Rogozhin E. A. Sokolova E. Yu. Somala S. N. Andreeva N. V. Raghucharan M. C. 《Geotectonics》2020,54(1):75-82
Geotectonics - The geological and geophysical study of the representative segment of the Alpine-Himalayan mobile belt—the Central zone of the Garhwal Himalaya—was conducted. The results... 相似文献
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Presented are the results from the assessment stage of forecasting-cartographic investigations into the vegetation in the Angara-Lena interfluve. An assessment is made of the main (preferred) and secondary ecological functions of vegetation within the geosystems. We demonstrate their changes with respect to native (reconstructed) vegetation. 相似文献
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Two zones of seismicity (ten events with M w = 7.0–7.7) stretching from Makran and the Eastern Himalaya to the Central and EasternTien Shan, respectively, formed over 11 years after the great Makran earthquake of 1945 (M w = 8.1). Two large earthquakes (M w = 7.7) hit theMakran area in 2013. In addition, two zones of seismicity (M ≥ 5.0) occurred 1–2 years after theMakran earthquake in September 24, 2013, stretching in the north-northeastern and north-northwestern directions. Two large Nepal earthquakes struck the southern extremity of the “eastern” zone (April 25, 2015, M w = 7.8 and May 12, 2015, M w = 7.3), and the Pamir earthquake (December 7, 2015, M w = 7.2) occurred near Sarez Lake eastw of the “western” zone. The available data indicate an increase in subhorizontal stresses in the region under study, which should accelerate the possible preparation of a series of large earthquakes, primarily in the area of the Central Tien Shan, between 70° and 79° E, where no large earthquakes (M w ≥ 7.0) have occurred since 1992. 相似文献
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Izvestiya, Atmospheric and Oceanic Physics - We have mapped the short-period shear-wave attenuation field in the lithosphere of the North Tien Shan and analyzed seismograms of local earthquakes and... 相似文献
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E. A. Sokolova 《Oceanology》2009,49(5):681-687
In the article, my own data on the species composition of the shells of planktonic Foraminifera (PF) from the Early Turonian
sediments of the Atlantic and Indian Ocean and from a number of the cross sections of Australia have been analyzed. In addition,
literature materials on the epicontinental basins of the northern hemisphere were also studied. The foraminifera species (PF)
are grouped, and four types of thanatocoenoses are distinguished according to their relationship. A climatic zonality map
for the early Turonian was constructed on the basis of the spatial distribution of these types. The reconstruction obtained
was compared with the climatic maps compiled earlier for the later time intervals of the Late Cretaceous. It was established
that the Turonian was characterized by the warmest climate. The tendency for global warming was the most clearly manifested
in the Early Turonian. 相似文献
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We have applied the method of one temperature log suggested by Kutasov in 1987 to process an unsteady temperature log of the 674 m deep submarine borehole BDP-98-2 (Akademichesky Ridge, Lake Baikal) and found it suitable to reconstruct the primary steady thermal gradient not disturbed by drilling. The steady gradient we derived using a special formalism, with reference to drilling conditions and measured thermal properties of sediments, was 63 mK/m, more than two times the unsteady gradient at different depths. Heat flow calculated with this gradient and a mean thermal conductivity of 1.1 W/(m·K) was 70 mW/m2, which is consistent with earlier geothermal data from the same area. Thus, the one-log procedure is a useful tool to predict the original undisturbed thermal gradients and estimate approximate heat flows if a single unsteady temperature log is available. 相似文献