Thermal regime of the near-surface layer of a water body and its effect on the state of aquatic ecosystem     

G. N. Panin  S. G. Sarkisyan  A. M. Nikanorov  N. M. Trunov 《Water Resources》2007,34(6):663-675

The thermal regime of the surface water layer in a water body is studied, and its effect on the mass and gas exchange in the water body-atmosphere system is examined by using a mesocosm as a microecosystem model.  相似文献   

Regime of water balance components of the Caspian Sea     

G. N. Panin  I. V. Solomonova  T. Yu. Vyruchalkina 《Water Resources》2014,41(5):505-511

The results of studying the hydrological regime of the Caspian Sea and its basin climate in observation period 1945–2010 are generalized. The results of analysis of the regime of precipitation, air temperature in the Caspian Sea basin and its level, as well as Volga runoff in periods of Caspian Sea level rise and drop are given. The conformity in variations of the trends in Caspian Sea level its basin climate is demonstrated, and the direction of further studies is substantiated.  相似文献   

Climatic trends in the middle and high latitudes of the Northern Hemisphere   总被引：1，自引：0，他引：1  

G. N. Panin  I. V. Solomonova  T. Yu. Vyruchalkina 《Water Resources》2009,36(6):718-730

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Anthropogene Einwirkungen auf Fischbestände     

Prof. Dr. Nicolae Bacalbaşa-Dobrovici 《Aquatic Sciences - Research Across Boundaries》1982,44(2):243-251

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Deformation and metamorphism in the Fenes Nappe (southern Apuseni Mountains,Romania)Déformation et métamorphisme dans la nappe de Fenes (monts Apuseni méridionaux,Roumanie)     

Alessandro Ellero  Leonardo Leoni  Michele Marroni  Ionel Nicolae  Luca Pandolfi  Franco Sartori 《Comptes Rendus Geoscience》2002,334(5):347-354

The Fenes Nappe belongs to the stack of tectonic units cropping out in the southern Apuseni Mts (Romania). It is characterised by a structural history consisting of two folding phases that developed during the time spanning from Early Aptian to Late Maastrichtian. The D1 phase produced west-northwest-verging, isoclinal to very tight folds, associated to a slaty cleavage. The main metamorphic imprint of the Fenes Nappe is linked to this deformation phase; illite and chlorite ‘crystallinity’ values indicate metamorphic conditions of the late diagenesis, close to the diagenetic zone/anchizone boundary. The subsequent D2 phase produced north-northwest-verging, parallel folds, not associated with synkinematic recrystallisation. These phases are interpreted as developed during a structural path, which includes burial at a depth of 8–10 km, followed by exhumation at shallower structural levels. To cite this article: A. Ellero et al., C. R. Geoscience 334 (2002) 347–354.  相似文献   

Variations in wind direction and speed from arctic to the Caspian Sea as a manifestation of modern climate changes     

G. N. Panin  A. V. Dzyuba 《Water Resources》2006,33(6):686-701

The regularities in present-day variations in the wind speed vector are examined at 18 stations along the section from Kola Peninsula to the Caspian Sea. Data on long-term variations in the major climate-forming factors and climatic parameters are generalized. The statistically significant tendency toward a considerable decline in the wind speed with a maximum module and the most frequent wind speeds of zonal, mostly western, directions (this tendency has been revealed earlier for the eastern coast of the middle and southern Caspian Sea) was found to hold for the greater part of the European Russia. Possible causes of present-day climate changes and their manifestations at the regional level are analyzed. A possible mechanism of present-day climate changes is proposed  相似文献   

Optical properties of long-range transported volcanic ash over Romania and Poland during Eyjafjallajökull eruption in 2010     

Anca Nemuc  Iwona S. Stachlewska  Jeni Vasilescu  Anna Górska  Doina Nicolae  Camelia Talianu 《Acta Geophysica》2014,62(2):350-366

After Eyjafjallajökull volcano eruption on 14 April 2010, due to a complex air mass circulation, Romania was exposed to volcanic ash and its mixture with continental aerosols. Ash particles with an average Ångström (UV-VIS) exponent of 1.4 ± 0.2 and (VIS-IR) of 1.2 ± 0.3, a color ratio (VIS-UV) of 0.54 and (IR-VIS) of 0.49, an average particle depolarization value ～9.4%, and a lidar ratio of 50 sr were retrieved on 18 April from multiwavelength Raman lidar measurements in Bucharest. Mixed volcanic ash with mineral dust particles advected from Sahara, depolarization ～12%, Ångström (UV-VIS) exponent of 1.25 ± 0.25 and (VIS-IR) of 1.45 ± 0.25, an increased color ratio (VIS-UV) of 0.61, (IRVIS) of 0.39 and lidar ratio of 53 sr were identified on 28 April. From observations in Poland conducted by an elastic lidar at 532 nm and a ceilometer at 1064 nm we retrieved an average backscatter related Ångström (VIS-IR) exponent of 1.25 ± 0.35, and a color ratio (IR-VIS) of 0.53 in the layer at about 5.5 km during the night of 16/17 April, indicating fresh ash over Warsaw.  相似文献   

Specific features of the hydrological regime of the Tsimlyansk Reservoir under climate changes in the Don basin     

G.?N.?Panin  T.?Yu.?VyruchalkinaEmail author  M.?G.?Grechushnikova  I.?V.?Solomonova 《Water Resources》2016,43(2):249-258

This study is a continuation of a cycle of studies into the effect of Atlantic climate on the hydrometeorological regime of European Russia. In this article, an attempt is made to analyze the effect of climate variations in the Atlantic on the Don basin and the hydrological regime of the Tsimlyansk Reservoir. A new composite index of heat transfer NAAII (North Atlantic Air Interaction Index) is suggested, the use of which enables the explanation of changes that have taken place in the Don basin. Evaporation was evaluated with the bathymetry of the Tsimlyansk Reservoir taken into account, and the water level of 32 m abs. was shown to be critical in the interaction between the reservoir and the atmosphere.  相似文献   

Analysis of variations in the regime of rivers and lakes in the Upper Volga and Upper Zapadnaya Dvina based on archaeological-geomorphological data     

A. V. Panin  V. S. Nefedov 《Water Resources》2010,37(1):16-32

The geomorphological and altitudinal positions of occupational layers corresponding to 1224 colonization epochs at 870 archaeological sites in river valleys and lake depressions in southwestern Tver province. A series of alternating low-water (low levels of seasonal peaks, many-year periods without inundation of floodplains) and high-water (high spring floods, regular inundation of floodplains) intervals of various hierarchical rank was identified. In low-water epoch, an increase was recorded in the share of settlements on low elevations, including river and lake floodplains now subject to inundation. The archaeological epochs 2–3 Ky in length were found to form the following series from high-water to low-water: Mesolithic (11.8–8.0 Ky ago)-Iron age (2.8–0.3)-Neolithic (8.0–5.0)-Bronze epoch (5.0–2.8). The first half of the Iron age (2.8–1.8 Ky ago) was extremely water-abundant, while its second half (middle ages) was dry (relative to the present time). A correlation between the hydrological and temperature regimes was identified: low-water epochs closely correlate with warm epochs, while high-water ones correlate with cold epochs. This can be associated with the specific features of the present-day type of water regime with dominating spring flood; this regime is supposed to have existed during the most part of the Holocene: the runoff and the levels of floods decline during warming epochs and increase during cooling epochs.  相似文献   

Reconstruction of Late Pleistocene events in the periglacial area in the southern part of the East European Plain     

A. A. Velichko  O. K. Borisova  Yu. M. Kononov  E. A. Konstantinov  R. N. Kurbanov  T. D. Morozova  P. G. Panin  V. V. Semenov  A. S. Tesakov  S. N. Timireva  V. V. Titov  P. D. Frolov 《Doklady Earth Sciences》2017,475(2):895-899

An integrated study of the loess–soil sequence in the coastal exposure near the settlement of Beglitsa (Rostov oblast) allowed us, for the first time, to reconstruct the landscape-climatic changes that occurred in the eastern Azov region over the course of the Late Pleistocene. In the south of the periglacial zone, considerable differences between intensity of the loess accumulation in the Early and Late Valdai Cryochrons were revealed. In the Early Valdai Epoch, which corresponds roughly to the end of Marine Isotope Stage (MIS) 5 and MIS 4, loess accumulation occurred after completion of development of the Mezin pedocomplex and before the beginning of the Bryansk stage of soil development, i.e., over more than 20 000 years. In the much shorter Late Valdai Cryochron MIS 2 (10 000–12 000 years), loess accumulation reached 5 m. The data evaluation shows that the loess accumulation rates in the Early Valdai Epoch (~0.07 mm/year) and the Late Valdai Epoch (~0.5 mm/year) differ from each other by an order of magnitude.  相似文献