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    Wyświetlanie 1-12 z 12
    Tytuł:
    Air temperature and water level inferences from northeastern Lapland (69°N) since the Little Ice Age
    Autorzy:
    Luoto, Tomi P.
    Kivilä, E. Henriikka
    Kotrys, Bartosz
    Płóciennik, Mateusz
    Rantala, Marttiina V.
    Nevalainen, Liisa
    Powiązania:
    https://bibliotekanauki.pl/articles/2041809.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    paleoclimate
    precipitation
    temperature
    Chironomidae
    Cladocera
    Źródło:
    Polish Polar Research; 2020, 41, 1; 23-40
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconstruction of postglacial paleoproductivity in Long Lake, King George Island, West Antarctica
    Autorzy:
    Yoon, Ho-Il
    Khim, Boo-Keun
    Lee, Kyung
    Park, Yu-Hyeon
    Yoo, Kyu-Cheul
    Powiązania:
    https://bibliotekanauki.pl/articles/2051902.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Antarctica
    lake sediment
    paleoclimate
    diatoms
    organic carbon
    carbon isotopes
    Źródło:
    Polish Polar Research; 2006, 27, 3; 189-206
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Xenoxylon synecology and palaeoclimatic implications for the Mesozoic of Eurasia
    Autorzy:
    Oh, C.
    Philippe, M.
    Kim, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/945484.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    fossil wood
    Xenoxylon
    phytocoenosis
    paleoecology
    paleoclimate
    Mesozoic
    Eurasia
    Opis:
    The distribution of fossil wood genera has been demonstrated to be an effective proxy for Mesozoic terrestrial climates. In this study, we investigated the phytocoenoses, which were associated with Xenoxylon confirmed to be a marker for a cool and/or wet climate in a boreal hemisphere (i.e., Xenoxylon-phytocoenoses) during the Mesozoic, using specimens of fossil wood. It was confirmed that Xenoxylon co-occurs more often with some wood genera than with others. For example, Protocedroxylon, a wood that is most likely related to the Pinaceae, is the genus most often associated with Xenoxylon-phytocoenoses. Although Taxodioxylon is also found in Xenoxylon-phytocoenoses, it is not found, however, as consistently as Protocedroxylon. The distribution and diversity of Xenoxylon-phytocoenoses changed throughout the Mesozoic. During the Late Triassic and Late Cretaceous, Xenoxylon-phytocoenoses had low diversity and were restricted to higher palaeolatitudes during the Late Cretaceous. However, during the Early to Middle Jurassic, Xenoxylon-phytocoenoses were distributed much farther south, while their diversity concomitantly increased sharply. From the Late Jurassic to the Early Cretaceous, the distribution of Xenoxylon phytocoenoses moved northward in Europe and even more so in East Asia. The changes in the distribution of Xenoxylon-phytocoenoses are in agreement with changes in both global and regional climates. Our results also demonstrated that, within the Xenoxylon distribution range, the corresponding phytocoenoses were differentiated along a latitudinal gradient and according to the global climate change patterns during the Mesozoic.
    Źródło:
    Acta Palaeontologica Polonica; 2015, 60, 1; 245-256
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Facies and fauna proxies to reconstruct the MIS 5 and MIS 7 coastal environments in Eastern Tunisia
    Autorzy:
    Chakroun, A.
    Zaghbib-Turki, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060334.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    MIS 5
    MIS 7
    Tunisia
    malacofauna
    paleoecology
    Persististrombus latus
    paleoclimate
    Opis:
    This study is based on the analysis of the sedimentology and the fossil assemblages of the Pleistocene deposits in Eastern Tunisia. It aims to establish the different fauna assemblages in order to highlight their paleoenvironments and discuss the importance of the Persististrombus latus distribution especially in the MIS 5e deposits around the Mediterranean Basin. The stratigraphic succession has been divided into two main units. The lower unit is quartz-rich sediment. Its lower marine term revealed well preserved species (Bivalves, Gastropods, Echinoids and Scirripedia) dominated by Acanthocardia, Cerastoderma, Parvicardium, Arca, Donax, Glycymeris, Loripes, Tellina and Cerithium. This fauna is representative of a typical association/biocenosis which may be developed in a sheltered bay, where the hydrodynamism is regularly moderate to low and/or quickly post-mortem buried. The upper unit is carbonated. Its basal term is also rich marine fauna which contains the extant tropical West African species Persististrombus latus. The occurrence of Persististrombus latus in this unit compared to its presence in the whole Mediterranean basin in the Late Pleistocene leads to question its importance in the interpretation of the climate warming during the Late Pleistocene, and to suggest its Atlantic origin.
    Źródło:
    Geological Quarterly; 2017, 61, 1; 186--204
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Late Quaternary vegetational and environmental history of western tropical Africa - the eastern Benin Basin, Lagos, Nigeria
    Autorzy:
    Adeonipekun, P. A.
    Adeniyi, T. A.
    Mateawo, J.
    Agbalaya, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/184322.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    paleoclimate
    paleoecology
    paleovegetation
    palynology
    sedimentology
    Lagos Coastal Area
    Late Quaternary
    Opis:
    A palynological study of a 30 m borehole within the Akoka campus of the University of Lagos, Akoka, Nigeria revealed Late Quaternary paleo-vegetational, climatic and environmental changes. Sixteen samples at a regular interval of 2 m were subjected to standard palynological and sedimentological techniques. Six pollen zones representing six paleoclimatic phases within the Late Quaternary period were recognized. The age model is based on two radiocarbon dates (6 m: 5,495 ± 25 ¹⁴C yr and 12 m: 15,660 ± 40 ¹⁴C yr) and, by extrapolation, the sequence spans approximately the last 35,000 yr BP. The African maximum transgression and the African Humid Period (wet paleoclimate maximum) – the Nouaktchottian, and Pre-Nouaktchottian respectively – were recognized, while the Ogolian II (Erg II) was stratigraphically recognized and the Upper Inchirian extrapolated. Recovered diatom frustules with other proxies were employed for paleoclimatic and paleoecological deductions. Four hydrological cycles and three paleoecological settings were identified. Results from this work indicate the co-eval record of paleoclimatic events across Africa, suspected cooling during the African maximum transgression in Nigeria and the usefulness of coastal freshwater swamp sediments for paleoclimate studies.
    Źródło:
    Geology, Geophysics and Environment; 2017, 43, 4; 277-291
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aalenian to Cenomanian terrestrial palynofloras of SW Scania, Sweden
    Autorzy:
    Vajda, V
    Powiązania:
    https://bibliotekanauki.pl/articles/23372.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    pollen
    palynoflora
    Cenomanian
    Cretaceous
    paleovegetation
    palynology
    Scania
    Sweden
    paleoclimate
    marine condition
    spore
    paleontology
    Opis:
    I describe dispersed miospore assemblages recovered from 35 drill-core samples from Höllviken 2, Norrevång 1, and Svedala 1 wells, all in SW Scania, Sweden. Over eighty taxa of pollen and spores, ranging from the Aalenian to the Cenomanian were identified. Four pollen/spore zones have been defined on the basis of key taxa and on the variation in the frequency of miospore groups. The palynofacies analysis indicates that a continental depositional environment prevailed during the Aalenian in Scania. A stratigraphic hiatus existed from the Aalenian then on until the Valanginian, when the depositional environment subsequently became marine. The marine conditions continued until the Cenomanian. A gradual increase in marine palynomorphs is found in the Cenomanian succession, indicating a transgression. On the basis of the palynoflora it is suggested that the vegetation consisted of cycads, conifers, pteridophytes and a very limited number of angiosperms.
    W pracy opisano rozproszone zespoły miospor pochodzące z 35 próbek rdzeni wiertniczych z otworów Höllviken 2, Norrevång 1 i Svedala 1, położonych w południowo-zachodniej Skanii, w Szwecji. Oznaczono ponad osiemdziesiąt taksonów pyłku i zarodników, wieku od aalenu po cenoman. Wyznaczono cztery poziomy pyłkowo-zarodnikowe na podstawie taksonów przewodnich i zmian częstości występowania poszczególnych grup miospor. Analiza palinofacjalna wskazuje, że w aalenie przeważało w Skanii kontynentalne środowisko sedymentacyjne. Luka stratygraficzna trwała od aalenu do walanżynu, kiedy to zapanowal morski reżim sedymentacyjny, trwający aż do cenomanu. Stopniowy wzrost udziału form morskich w sukcesji cenomańskiej wskazuje na transgresję. Zbadana palinoflora wskazuje na to, że w kredzie przeważaly na badanym obszarze sagowce, szpilkowe, paprotniki i nieliczne okrytozalążkowe.
    Źródło:
    Acta Palaeontologica Polonica; 2001, 46, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An 854-year tree-ring chronology of Scots pine for south-west Finland
    Autorzy:
    Helama, Samuli
    Holopainen, Jari
    Timonen, Mauri
    Mielikäinen, Kari
    Powiązania:
    https://bibliotekanauki.pl/articles/2027262.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dendrochronology
    North At lan tic Os cil la tion
    paleoclimate
    Pinus sylvestris
    subfossil wood
    Opis:
    A near-mil len nial tree-ring chro nol ogy (AD 1147–2000) is pre sented for south-west Fin land and an a lyzed us ing dendroclimatic meth ods. This is a com pos ite chro nol ogy com pris ing sam ples both from stand ing pine trees (Pinus sylvestris L.) and subfossil trunks as re cov ered from the lake sed i ments, with a to tal sam ple size of 189 tree-ring sample se ries. The se ries were dendrochronologically cross-dated to ex act cal en dar years to por tray vari abil ity in tree-ring widths on inter-an nual and lon ger scales. Al though the stud ied chro nol ogy cor re lates sta tis ti cally sig nif i cantly with other long tree-ring width chro nol o gies from Fin land over their com mon pe riod (AD 1520–1993), the south-west chro nol ogy did not ex hibit sim i larly strong mid-sum mer tem per a ture or spring/early-sum mer pre cip i ta tion sig nals in com par i son to pub lished chro nol o gies. On the other hand, the south-west chro nol ogy showed high est cor re la tions to the North At lan tic Os cil la tion in di ces in win ter/spring months, this as so ci a tion fol low ing a dendroclimatic fea ture com mon to pine chro nol o gies over the re gion and ad ja cent ar eas. Paleoclimatic com par i son showed that tree-rings had var ied sim i larly to cen tral Eu ro pean spring tem per a tures. It is pos tu lated that the col lected and dated tree-ring ma te rial could be stud ied for wood sur face reflectance (blue chan nel light in ten sity) and sta ble iso topes, which both have re - cently shown to cor re late notably well with sum mer tem per a tures.
    Źródło:
    Studia Quaternaria; 2014, 31; 61-68
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    INTIMATE selected remarks following the cost action
    Autorzy:
    Michczynska, D.J.
    Starkel, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/12004.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    COST Action ES0907
    climate change
    extreme change
    extreme climate
    ice core
    paleoclimate
    paleoenvironment
    Źródło:
    Papers on Global Change; 2014, 21
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Climate-driven diversity changes of Mediterranean echinoids over the last 6 Ma
    Autorzy:
    Borghi, E.
    Garilli, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/31341352.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleontology
    Echinoidea
    biodiversity
    biogeography
    paleoclimate
    Miocene
    salinity crisis
    Late Cenozoic
    climate change
    Mediterranean area
    echinoid
    Źródło:
    Acta Palaeontologica Polonica; 2022, 67, 4; 781-805
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeoecology of Late Triassic conodonts: Constraints from oxygen isotopes in biogenic apatite
    Autorzy:
    Rigo, M
    Joachimski, M.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/21341.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    paleoecology
    paleontology
    Late Triassic
    conodont
    oxygen isotope
    biogenic apatite
    Conodonta
    paleotemperature
    Triassic
    Tethys
    paleoclimate
    reconstruction
    Opis:
    The oxygen isotopic composition of conodont apatite derived from the Late Triassic (Carnian to lower Norian), Pignola 2 and Sasso di Castalda sections in the Lagonegro Basin (Southern Apennines, Italy) was studied in order to constrain the habitat of Late Triassic conodont animals. Oxygen isotope ratios of conodonts range from 18.5 to 20.8‰ V−SMOW, which translate to palaeotemperatures ranging from 22 to 31ºC, assuming a δ18O of Triassic subtropical sea water of −0.12‰ V−SMOW. These warm temperatures, which are well comparable to those of modern subtropical−tropical oceans, along with the body features of the conodont animal suggest that conodont δ18O values reflect surface water temperatures, that the studied conodont taxa lived in near−surface waters, and that δ18O values of Late Triassic conodonts can be used for palaeoclimatic reconstructions.
    Źródło:
    Acta Palaeontologica Polonica; 2010, 55, 3; 471-478
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occurrences of elaterate pollen from the Lower Cretaceous of Ghana: Implications for biostratigraphy and palaeoclimatology
    Autorzy:
    Atta-Peters, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/11744.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    occurrence
    pollen
    Lower Cretaceous
    Cretaceous
    Ghana
    biostratigraphy
    paleoclimatology
    paleoclimate
    Elaterocolpites castelaini
    Elaterosporites klaszii
    Elaterosporites protensus
    Elaterosporites verrucatus Elateropollenites jardinei
    Galaeocornea causea
    Galaeocornea clavis
    Sofrepites legouxae
    Opis:
    Elaterate pollen with elater-like protruberances including Elaterocolpites castelaini, Elaterosporites klaszii, E. protensus, E. verrucatus, Elateropollenites jardinei, Galaeocornea causea, G. clavis, Sofrepites legouxae, have been recovered from the 1S-3AX well in the offshore Tano Basin. The assemblage has been interpreted as Albian - Cenomanian age, and is indicative of an arid to semi-arid palaeoclimatic conditions for these periods in the Tano Basin. Similar species have been interpreted as Albian – Cenomanian in other localities within the Africa-South America (ASA) province and thus allows for a palynostratigraphic correlation with these localities in the ASA province.
    Źródło:
    International Letters of Natural Sciences; 2013, 04
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geofizyczne oraz hydrogeologiczne warunki pozyskiwania energii geotermicznej w Polsce
    Geophysical and hydrogeological aspects of utilization of thermal energy in Poland
    Autorzy:
    Szewczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074799.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    geotermia
    naziemna gęstość strumienia ciepła
    klimat
    dzienniki temperatury
    hydrologia
    mineralizacji wód podziemnych
    parametry petrofizyczne
    geothermal energy
    terrestrial heat flow density
    paleoclimate
    temperature logs
    hydrogeology
    groundwater mineralization
    petrophysical parameters
    Opis:
    In result of drilling works carried out for over the past several decades in Poland, over 7,500 boreholes were completed to depths exceeding 1,000 m. The works were mainly connected with exploration for oil and gas and, therefore, the range and quality of the bulk of the obtained borehole data appear to be of very limited value and often even misleading in analyzing geothermal potential. This makes Polish Geological Institute’s exploratory boreholes especially important for geothermal studies thanks to their relatively regular distribution, large cored intervals and numerous hydrogeological and petrophysical tests and analyses. The Polish Geological Institute has been conducting long-term systematic studies aimed at obtaining uniform and the most detailed knowledge of environmental factors determining possibilities to use geothermal energy in Poland. Generation and compilation of uniform map of heat flow density in the area of Poland including southern Baltic Sea have been completed in 2009. The paper presents newly completed map of undisturbed temperature at the depth of 2,000 m for that area. This map along with the above mentioned uniform map of heat flow density provide important indices for evaluating perspectives of obtaining geothermal energy. The paper also presents hitherto obtained results of determinations of hydrogeological parameters of deep aquifers mainly extending throughout the Polish Lowlands.
    Źródło:
    Przegląd Geologiczny; 2010, 58, 7; 566-573
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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