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Wyszukujesz frazę "climatic events" wg kryterium: Wszystkie pola


Wyświetlanie 1-5 z 5
Tytuł:
Possibility of identification of negative extreme climatic events using Pinus sylvestris tree-rings in Transdanubia, Hungary
Autorzy:
Misi, D.
Nafradi, K.
Powiązania:
https://bibliotekanauki.pl/articles/41465.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
identification
climatic event
Pinus sylvestris
Scotch pine
drought
tree ring
Transdanubia region
Hungary
Opis:
Negative climatic extremes occur more frequently in the last decades. Since the Carpathian Basin is highly concerned in their impacts it is important to investigate prior events and estimate the response of the environment to them to get useful information for the future. In our work we selected a stand which is seriously affected by unfavorable summer conditions to examine what kind of fingerprint the negative extreme events have left. We investigated narrow rings and intra-annual density fluctuation to describe years with extreme events. Their stabilized frequency was tested against climatic and groundwater data, as well as against aridity index to determine climate-growth relationships using Pearson and Spearman’s correlations. Our results show positive significant correspondence between summer precipitation and treering growth together with negative connection with summer temperature. The Spearman’s correlation between stabilized frequency of intra-annual density fluctuations, narrow rings and climate data ended with significant relationship in summer. According to the comparison of intra-annual density fluctuation and narrow ring data with drought periods it can be said that narrow rings are better tool for the examination of negative extreme events in summer.
Źródło:
Dendrobiology; 2016, 75
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Paleogen i neogen : czas dynamicznych zmian klimatycznych
Paleogene and Neogene : a time of dynamic changes of climate
Autorzy:
Słodkowska, B.
Kasiński, J. R.
Powiązania:
https://bibliotekanauki.pl/articles/2075567.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
paleogen
neogen
zmiany klimatyczne
zjawiska klimatyczne
Paleogene
Neogene
climatic evolution
climatic events
Opis:
The paper discusses the causes of climate change in the latest Cretaceous and the Paleogene (impact event or huge volcanic eruptions?). The climatic evolution (global and – more specifically – in the territory of Poland) during the Paleogene and Neogene in relation to the major climatic events of these periods (PETM, EECO, C4 grassland, Messinian Salinity Crisis) are described and their causes are discussed. Tectonic transformation, volcanic events and earthquakes led to the change in the position of the continents and in the circulation of ocean currents, as well as to increased emission of greenhouse gases – methane and carbon dioxide. These were the main causes of climate changes during the Paleogene and Neogene.
Źródło:
Przegląd Geologiczny; 2016, 64, 1; 15--25
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Climatic and anthropogenic drivers of zero-flow events in intermittent rivers in Poland
Autorzy:
Rutkowska, Agnieszka
Osuch, Marzena
Żelazny, Mirosław
Banasik, Kazimierz
Klimek, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/27312644.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
circular statistics
climatic impact
anthropogenic impact
river flow intermittence
standardised evapotranspiration index
trend in flow intermittence
Opis:
River intermittence was studied based on data from hydrological monitoring in Poland. We screened the entire state database and two another data sources applying the criterion for zero-flow event: discharge less than 0.0005 m3∙s-1, and found five intermittent rivers with catchment area from 9.2 to 303.7 km2. We aimed at finding associations between intermittence and climatic driving forces (temperature and precipitation), and between intermittence and anthropogenic activity. We used the Spearman correlation coefficient, circular statistics, and statistical tests for trend. The concentration of zero-flow days, mostly in summer, and the decreasing trend in the standardised precipitation evapotranspiration index (SPEI) in all catchments at various aggregation levels, and an increasing trend in the total number of zero-flow days and in the maximum length of zero flow events in two rivers, were detected. The strong negative correlation (–0.62 ≤ ρ < 0) between intermittence and the SPEI backward lagged in time showed that intermittence resulted from prolonged deficits in climatic water balance due to increasing evapotranspiration. The reaction of the Noteć catchment, amplified by the anthropogenic pressure (brown coal mines), was reflected in the atypical shape of the rose diagram and in inhomogeneities in river discharges. The results show that the rose diagram can serve as an indicator of the degree of anthropogenic impact on runoff conditions.
Źródło:
Journal of Water and Land Development; 2023, 57; 52--61
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Climatic influences on appearance and development of neolithic cultures in southern outskirts of carpathian basin
Autorzy:
Botić, Katarina
Powiązania:
https://bibliotekanauki.pl/articles/2025729.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
northern Croatia
Slavonia
Neolithic
Starčevo and Sopot cultures
rapid climate events (8.2, 5.9 and 4.2 ka)
Opis:
Southern outskirts of Carpathian basin, namely the region between Sava, Drava and Danube rivers, have specific climate conditions today partially influenced by geological structure and geographical position. In this region Neolithic Starèevo and Sopot cultures are observed. Radiocarbon dates for Neolithic cultures are used to build a time frame which is compared with climate proxies, especially with Holocene rapid climate events (8.2, 5.9 and 4.2 ka), to draw a conclusion on when and how these cultures developed in southern regions of Carpathian basin. Lacking firm geoarchaeological data the results are not conclusive but can provide some insight on how the climate may have directly and indirectly influenced development of Neolithic and beginning of Eneolithic period in the region.
Źródło:
Studia Quaternaria; 2016, 33; 11-26
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identifying the Climatic Conditions in Iraq by Tracking Down Cooling Events in the North Atlantic Ocean in the Period 3000–0 BC
Autorzy:
Muslih, Khamis D.
Powiązania:
https://bibliotekanauki.pl/articles/2037650.pdf
Data publikacji:
2014-10-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Iraq
North Atlantic Oscillation
drift ice indices
drought intervals
Eastern Mediterranean
Opis:
North Atlantic Oscillation (NAO), monthly averages of precipitation in the Baghdad station, and petrologic tracer proxy data for ocean properties in the North Atlantic (NA) have been used in an attempt to identify climatic conditions in Iraq during the study period. The study showed that contemporary changes in precipitation in Iraq are associated with NAO, as a negative relationship is found between them. Moreover, the study found that there is a strong negative correlation between NAOI and SST in NA, where drift ice indices explain between 33–36% of the NAOI variability. The prolonged of cold Holocene periods led to a radical oceanography and atmospheric changes in the NA and the Mediterranean Sea, effectively contributing to the prevalence of cold and drought in the EM, including Iraq. The analysis revealed as many as four intervals of significant cool drought phases prevailing over Iraq during the periods 2650–2500, 2200– 1900,1300–1200 and 1000–850 BC.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2014, 18, 3; 40-46
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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