كليدواژه :
مدل جهاني , پليوستسن فوقاني , تغييرات آب و هوايي , مواريث تراكمي يخچال ها , مواريث ژيومورفولوژيك
چكيده لاتين :
Foot of mountain and Eastern Slope of Sabalan are as a port of Sabalan highland in west of Ardebil province(Ardabil township). The area that is studied is Sabalan mountain, that is port of large unit of Geomorphology, and has Alpine cold climate. This area is influenced by various changes from its existence until now.
These changes have effects in different forms and began from the beginnings of Quaternary. In this region, erosive systems depend on Ecological data, and are influenced by it. In this manner that in each period, some erosive factors are dominant and that is on the basis of particular ecological conditions and has effect in changing of form of earth surface. In fact, interface surface causes some Geomorphological phenomena in this unit and isnʹt as a result of present erosion, but as a result of ancient or old forms, the forms have caused under the influence of morphoclimatic conditions that are different with present conditions. The study of these phenomena is a good guide in reviewing of Quaternary events. In fact, we can discover factors that were active in environment during time and under take production mechanism and that is based on these forms and symmetrical deposit in region.
Now, Geomorphological evidences about climate changes of upper Pleistocene in Eastern slope of Sabalan are: Glacial Circus, Glacial accumulation residual like Moraine , polished rocks and Lahar flowing. These forms are morphological effects of climate changes of upper Pleistocene in eastern slope of Sabalan. These forms are influenced by Nivation process during cold season, and they are under the influence of running water erosion (as a result of raining or melting of show)and wind process during warm season.
The research did on the basis of some observation, the studying of aerial and satellite photographs and topographical and geological surveys and finally, climate changes of upper Pleistocene were introduced on the basis of geomorphological residual and global model.
