气候变化领域集成服务门户(CCPortal): A Multifaceted Look at Garhwal Himalayan Glaciers: Quantifying Area Change, Retreat, and Mass Balance, and Its Controlling Parameters

CCPortal

DOI	10.1007/s10668-024-04917-7
	A Multifaceted Look at Garhwal Himalayan Glaciers: Quantifying Area Change, Retreat, and Mass Balance, and Its Controlling Parameters
	Guha, Supratim; Tiwari, Reet Kamal; Zhang, Guoqing
发表日期	2024
ISSN	1387-585X
EISSN	1573-2975
英文摘要	Assessing glaciers' response to climate change is vital for water resource management. This study investigates changes in glacier areas, retreats and mass balance in the Garhwal Himalayan region. Initially, multitemporal Landsat imagery was used to delineate sample glacier boundaries for different study years manually. Subsequently, the Friedman test was employed to assess glacier area changes and retreats' temporal status across the Garhwal Himalayan region. The findings reveal a 1.12% deglaciation rate, consistent across observation periods. Mean area change for the first (2001-11), second (2011-16), and third epochs (2016-21) range from - 0.053 to -0.203, -0.084 to -0.309, and - 0.088 to -0.257%yr- 1, respectively. Glacier retreat also shows homogeneous length loss across all epochs, with mean scores ranging from 7.024 to 14.65, 7.87 to 17.03, and 8.956 to 14.98 myr- 1, respectively. Mass balance ranges from - 0.547 to -1.089 m.w.e.yr- 1 between 2000 and 2020, influenced by variations in mean slope and debris cover on individual glaciers. Debris cover and glacier slope are identified as key determinants, with debris cover exhibiting a positive coefficient and glacier slope demonstrating an inverse relationship with mass balance. Additionally, a 10% increase in debris cover corresponds to a 0.36 m.w.e.yr- 1 mass gain for a given slope, while a 10% increase in slope steepness results in a 0.86 m.w.e.yr- 1 mass loss for a given debris cover. The study highlights that glacier area doesn't affect the heterogeneous response. Instead, a strong correlation exists between glacier area and debris cover, with debris cover playing a key role in characterizing responses to changing climates. Thus, glacier area serves effectively as a proxy for debris cover extent.
英文关键词	Glacier mass balance; Garhwal Himalaya; Central Himalaya; Debris cover; Morphological parameter; Mann-Kendall test
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences
WOS记录号	WOS:001220335900001
来源期刊	ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291025
作者单位	Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Ropar; Korea Polar Research Institute (KOPRI); Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS
推荐引用方式 GB/T 7714	Guha, Supratim,Tiwari, Reet Kamal,Zhang, Guoqing. A Multifaceted Look at Garhwal Himalayan Glaciers: Quantifying Area Change, Retreat, and Mass Balance, and Its Controlling Parameters[J]. 中国科学院青藏高原研究所,2024.
APA	Guha, Supratim,Tiwari, Reet Kamal,&Zhang, Guoqing.(2024).A Multifaceted Look at Garhwal Himalayan Glaciers: Quantifying Area Change, Retreat, and Mass Balance, and Its Controlling Parameters.ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY.
MLA	Guha, Supratim,et al."A Multifaceted Look at Garhwal Himalayan Glaciers: Quantifying Area Change, Retreat, and Mass Balance, and Its Controlling Parameters".ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY (2024).