کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6350745 | 1622345 | 2007 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The reconstruction of Early and Middle Miocene climate and vegetation in Southern Germany as determined from the fossil wood flora
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The reconstruction of Early and Middle Miocene climate and vegetation in Southern Germany as determined from the fossil wood flora The reconstruction of Early and Middle Miocene climate and vegetation in Southern Germany as determined from the fossil wood flora](/preview/png/6350745.png)
چکیده انگلیسی
Our investigation documents the following important outcomes: (1) the Late Ottnangian seems to be the warmest period during the investigated time span, with a mean annual temperature (MAT) between 22.2 and 24.2 °C and a cold month temperature (CMT) around 16.7 °C. The Late Ottnangian is significantly warmer by at least 1.7 °C MAT and up to 3.4 °C CMT than the Mid-Miocene Climatic Optimum (i.e. MAT 17.4-20.5 °C and CMT 8.0-13.3 °C of the Late Karpatian to Middle Badenian, â¼Â 17 to â¼Â 13.8 My) and may correspond to the First Climatic Optimum (17.7-16.7 Ma) of the southern oceans [Pekar, S.F., Marchitto, T., Lynch-Steiglitz, J., 2002. Evidence for Water-Mass Changes on the Tasmanian Slope during the Early Miocene (19-16.5 Ma): Stable Isotope and Mg/Ca Records from ODP Leg 189 Site 1168. Eos, Transactions, American Geophysical Union 83(47), Fall Meet. Supplement, Abstract PP11C-06, F 926-927.]. (2) The cooling between both climate optima is documented by the Southern Franconian Alb xyloflora and probably reflects the Mi2 build-up phase of the Antarctic ice-sheets. (3) From Late Ottnangian to Middle Badenian the wet end-member of the climate system appears to be humid (Mean Annual Precipitation â¼Â 830-â¼Â 1.350 mm) and with relatively even distribution of rainfall throughout the year. Only the Late Karpatian is characterized by the occurrence of a distinct dry season probably occurring during the early spring or late autumn. (4) We attributed the Early to Middle Badenian vegetation change to an increase in intra-basin relief, rather than to a different climate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 253, Issues 1â2, 14 September 2007, Pages 91-114
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 253, Issues 1â2, 14 September 2007, Pages 91-114
نویسندگان
Madelaine Böhme, Angela A. Bruch, Alfred Selmeier,