Late Glacial glacier-climate modeling in two valleys on the eastern slope of Samdainkangsang Peak, Nyaiqentanggulha Mountains

Well-preserved Late Glacial moraines in the Barenduo and Yuqiongqu valleys on the eastern slope of the Samdainkangsang Peak present an opportunity to reconstruct glacier extents and examine the character of the climate during the Late Glacial stage in the Nyaiqentanggulha Mountains. This study emplo...

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Bibliographic Details
Published in:Science China Earth Sciences
Main Authors: Xu XiangKe, Dong GuoCheng, Pan BaoLin, Hu Gang, Bi WeiLi, Liu JinHua, Yi ChaoLu
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Glacier-climate Modeling
Late Glacial
Glacier Extent
Paleoclimate
Samdainkangsang Peak
Science & Technology
Physical Sciences
HIMALAYAN-TIBETAN OROGEN
NORTH-ATLANTIC REGION
LATE QUATERNARY
MASS-BALANCE
NEW-ZEALAND
LAST TERMINATION
UINTA MOUNTAINS
ENERGY-BALANCE
INTIMATE GROUP
EXPOSURE AGES
Geology
Geosciences
Multidisciplinary
New Zealand
Ela
North Atlantic
Online Access:http://ir.ieecas.cn/handle/361006/5542
https://doi.org/10.1007/s11430-016-0110-x
Description
Summary:Well-preserved Late Glacial moraines in the Barenduo and Yuqiongqu valleys on the eastern slope of the Samdainkangsang Peak present an opportunity to reconstruct glacier extents and examine the character of the climate during the Late Glacial stage in the Nyaiqentanggulha Mountains. This study employs a coupled mass-balance and ice-flow model to reconstruct the glacier extents in the two valleys and assess the magnitudes of temperature and precipitation change during the Late Glacial period. Model results indicate that during the Late Glacial, the Barenduo valley contained an ice volume of 1.67x108 m3, with the equilibrium-line altitude (ELA) being similar to 5500 m asl; and the Yuqiongqu valley had an ice volume of 5.56x108 m3, with the ELA being similar to 5470 m asl. A climate scenario, temperature depression of 2.6-2.8A degrees C and 60-70%, percent of modern (1981-2010) precipitation, can sustain both of the Late Glacial glacier extents in the two valleys. A 50% increase or decrease from modern precipitation would have been coupled with the respective Late Glacial temperature depressions of 1.6 and 3.0A degrees C in the Barenduo valley, and 2.1 and 2.8A degrees C in the Yuqiongqu valley.

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