西北地区热岩溶制图集体:一个北方驱动的制图协作,旨在了解永久冻土融化的影响

IF 2.7 3区 地球科学 Q2 ECOLOGY Arctic Science Pub Date : 2023-07-17 DOI:10.1139/as-2023-0009
S. Kokelj, T. Gingras-Hill, Seamus V. Daly, P. Morse, Stephen A. Wolfe, A. Rudy, Jurjen van der Sluijs, N. Weiss, B. O’Neill, J. Baltzer, T. Lantz, C. Gibson, Dieter Cazon, R. Fraser, D. Froese, G. Giff, Charles Klengenberg, S. Lamoureux, W. Quinton, M. Turetsky, Alexandre Chiasson, Celtie Ferguson, Mike Newton, Mike Pope, Jason A Paul, Alice Wilson, J. Young
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引用次数: 0

摘要

本文记录了加拿大西北部200万平方公里地区的首次热岩溶和解冻敏感地形指标综合清单。这是通过热岩溶测绘集体(TMC)完成的,TMC是一个研究合作组织,通过加拿大西北地区(NT)的测绘和空中评估,系统地清点永久冻土融化敏感性指标。基于NT的永久冻土容量的增加培养了科学领导力,并与政府、学术界和社区研究人员合作,使项目得以实施。正在进行的交流和外联为研究设计提供了信息,并加强了土著和利益攸关方的关系。基于主题的方法文档支持映射器培训,灵活的数据基础设施促进了加拿大研究人员在整个新冠肺炎大流行期间取得的进展。热岩溶和解冻敏感地貌的TMC清单与精细尺度经验测绘(69%至84%的准确度)和航空清单(74%至96%的准确度。敏感永久冻土地形的国家和环极尺度建模与TMC输出形成了显著对比,突出了其局限性和基于经验的测绘方法的价值。我们证明,多参数TMC输出支持对永久冻土地形敏感性的全面理解和精细描述,为综合提供了新的机会,并为未来的建模方法提供了信息,这些方法迫切需要更好地理解永久冻土融化对加拿大北部意味着什么。
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The Northwest Territories Thermokarst Mapping Collective: A northern-driven mapping collaborative toward understanding the effects of permafrost thaw
This paper documents the first comprehensive inventory of thermokarst and thaw-sensitive terrain indicators for a 2 million km2 region of northwestern Canada. This is accomplished through the Thermokarst Mapping Collective (TMC), a research collaborative to systematically inventory indicators of permafrost thaw sensitivity by mapping and aerial assessments across the Northwest Territories (NT), Canada. The increase in NT-based permafrost capacity has fostered science leadership and collaboration with government, academic, and community researchers to enable project implementation. Ongoing communications and outreach have informed study design and strengthened Indigenous and stakeholder relationships. Documentation of theme-based methods supported mapper training, and flexible data infrastructure facilitated progress by Canada-wide researchers throughout the COVID-19 pandemic. The TMC inventory of thermokarst and thaw-sensitive landforms agree well with fine-scale empirical mapping (69% to 84% accuracy) and aerial inventory (74% to 96% accuracy) datasets. National- and circumpolar-scale modelling of sensitive permafrost terrain contrasts significantly with TMC outputs, highlighting their limitations and the value of empirically-based mapping approaches. We demonstrate that the multi-parameter TMC outputs support a holistic understanding and refined depictions of permafrost terrain sensitivity, provide novel opportunities for syntheses, and inform future modelling approaches, which are urgently required to comprehend better what permafrost thaw means for Canada’s North.
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来源期刊
Arctic Science
Arctic Science Agricultural and Biological Sciences-General Agricultural and Biological Sciences
CiteScore
5.00
自引率
12.10%
发文量
81
期刊介绍: Arctic Science is an interdisciplinary journal that publishes original peer-reviewed research from all areas of natural science and applied science & engineering related to northern Polar Regions. The focus on basic and applied science includes the traditional knowledge and observations of the indigenous peoples of the region as well as cutting-edge developments in biological, chemical, physical and engineering science in all northern environments. Reports on interdisciplinary research are encouraged. Special issues and sections dealing with important issues in northern polar science are also considered.
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