کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1040780 1484126 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reconstructed late Quaternary hydrological changes from Lake Tso Moriri, NW Himalaya
ترجمه فارسی عنوان
تغییرات هیدرولوژیکی اواخر کواترنر از دریاچه تسو موریری، نیویورک هیمالیا، بازسازی شد
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی

We present the results of our investigations on the radiocarbon dated core sediments from the Lake Tso Moriri, NW Himalaya aimed at reconstructing palaeohydrological changes in this climatically sensitive region. Based on the detailed geochemical, mineralogical and sedimentological analysis, we recognise several short-term fluctuations superimposed upon seven major palaeohydrological stages identified in this lake since ∼26 cal ka. Stage I (>20.2 cal ka): shallow lake characterised by input of coarse-grained detrital sediments; Stage II (20.2–16.4 cal ka): lake deepening and intensification of this trend ca. 18 cal ka; Stage III (16.4–11.2 cal ka): rising lake levels with a short term wet phase (13.1–11.7 cal ka); Stage IV (11.2–8.5 cal ka): early Holocene hydrological maxima and highest lake levels inferred to have resulted from early Holocene Indian monsoon intensification, as records from central Asia indicate weaker westerlies during this interval; Stage V (8.5–5.5 cal ka): mid-Holocene climate deterioration; Stage VI (5.5–2.7 cal ka): progressive lowering of lake level; Stage VII (2.7–0 cal ka): onset of modern conditions. The reconstructed hydrological variability in Lake Tso Moriri is governed by temperature changes (meltwater inflow) and monsoon precipitation (increased runoff). A regional comparison shows considerable differences with other palaeorecords from peninsular India during late Holocene.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary International - Volume 371, 12 June 2015, Pages 76–86
نویسندگان
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