Paleo-glacial and paleo-equilibrium line altitude reconstruction from the Late Quaternary glacier features in the Pir Panjal Range, NW Himalayas

التفاصيل البيبلوغرافية
العنوان: Paleo-glacial and paleo-equilibrium line altitude reconstruction from the Late Quaternary glacier features in the Pir Panjal Range, NW Himalayas
المؤلفون: Reyaz Ahmad Dar, Omar Jaan Paul, Shakil Ahmad Romshoo
المصدر: Quaternary International. 642:5-16
بيانات النشر: Elsevier BV, 2022.
سنة النشر: 2022
مصطلحات موضوعية: 010506 paleontology, geography, geography.geographical_feature_category, Cirque, Last Glacial Maximum, Glacier, 010502 geochemistry & geophysics, 01 natural sciences, Altitude, Loess, Deglaciation, Glacial period, Physical geography, Quaternary, Geology, 0105 earth and related environmental sciences, Earth-Surface Processes
الوصف: Paleoclimatic constraints from mountain ranges separating major climate systems are important in understanding past climatic changes. Using the present-day glacial geomorphology combined with the GlaRe model, the last glacial maximum (LGM) of seven representative valley glaciers of the Pir Panjal Range (PPR), Kashmir Himalaya was reconstructed. The Range lies at the interface of the tropical and temperate climates in the NW Himalayas. The glacier reconstructions showed that the glaciers in the Range advanced ~10 km down the present-day cirque margins and attained a thickness of more than 200 m during the LGM. Using six different methods, the equilibrium line altitude (ELA) changes in the selected valleys of the PPR were estimated for which the LGM was reconstructed. ELA depressions calculated for the LGM vary from 374 m to 416 m with a mean of 395 m. The weighted average ELA of the Range lies at an altitude of 3922 m a.s.l showing a general increasing trend from SE to NW of the Range. The published chronology of the loess deposits, a proxy for glacial aridity, shows the evidence of significant glacial advances starting around 350 kya in the valley, which is consistent with the evidence of both the pre- and post-LGM advances observed in this study. The presence of extensive glacier features all across the PPR and the presence of a few small heavily debris-covered glaciers in the Range points towards the rapid deglaciation in the area.
تدمد: 1040-6182
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::f78a0f8381f36815d7c2aaeb18380cafTest
https://doi.org/10.1016/j.quaint.2021.03.005Test
حقوق: CLOSED
رقم الانضمام: edsair.doi...........f78a0f8381f36815d7c2aaeb18380caf
قاعدة البيانات: OpenAIRE