A helicopter-borne radar system for Canadian glacier mass assessment

用于加拿大冰川质量评估的直升机机载雷达系统

基本信息

  • 批准号:
    RTI-2022-00069
  • 负责人:
  • 金额:
    $ 10.87万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Research Tools and Instruments
  • 财政年份:
    2021
  • 资助国家:
    加拿大
  • 起止时间:
    2021-01-01 至 2022-12-31
  • 项目状态:
    已结题

项目摘要

This project will fund the purchase of a custom-built helicopter radar system to image glacier ice up to 1km thick. Current mass estimates of Canadian glaciers are highly inaccurate due to widespread lack of ice thickness data, and modelling of glacier response to climate warming is significantly hindered by limited bed topography data. As such, our ability to predict sea-level contributions from Canadian glaciers, hazards from rapidly changing glaciers such as glacier lake outburst floods, downstream water resource availability, and the impact that changing glacier mass will have on Canadian mountain tourism, is limited. Current estimates of ice thickness and glacier bed topography have primarily been made using ground-based radar systems, which are towed on foot or by snowmachine and therefore limited in extent, highly time-consuming,  logistically expensive to obtain, and dangerous or impossible to operate in crevassed glacier regions. The proposed helicopter radar system will alleviate these problems, allowing for large-scale, safe data collection over ice masses in glacierized environments across Canada for the first time. This will facilitate the first accurate estimate of ice mass in the world's largest glaciated area outside of Greenland and Antarctica. A pilot helicopter radar system was tested in summer 2021 in the St. Elias Mountains, Yukon, with successful ice penetration depth up to 650m. The proposed system will build on this design with instrumentation to improve positioning accuracy, improved platform aerodynamics, better control and acquisition software, and radar developments to enable penetration of temperate (melting point) ice up to 1000m. The latter is necessary, as the sparse ground-based measurements suggest that most glaciers in the Yukon and Canadian High Arctic are considerably deeper than 650m. The primary research questions that will be addressed with data collected with the helicopter radar system are: 1) What is the mass of Canada's glaciers, on local, regional and national scales?; 2) What are the drivers of Canadian glacier flow rates in relation to subglacial topography and ice thickness?; 3) How will glacier mass and dynamics change in the future? High resolution helicopter radar surveys will be carried out in the first five years at major glaciers in the Yukon, Canadian High Arctic and British Columbia, where ice thickness data are currently lacking, to directly aid current funded research projects and provide crucial data for a wide variety of students supervised by team members. In the longer term (5-10 years), surveys will derive total glacial mass data for these three regions. The data gathered will benefit multiple collaborators, in addition to direct members of the project team, and provide globally important data required by organizations such as the World Glacier Monitoring Service (Switzerland), and the Intergovernmental Panel on Climate Change.
该项目将资助购买定制的直升机雷达系统,以对厚达 1 公里的冰川冰进行成像。由于普遍缺乏冰厚度数据,目前对加拿大冰川的质量估计非常不准确,而且冰川对气候变暖的响应模型也很不准确。因此,有限的河床地形数据严重阻碍了我们预测加拿大冰川对海平面的影响、冰川湖溃决洪水等冰川快速变化的危害、下游水资源可用性及其影响的能力。目前对冰层厚度和冰川床地形的估计主要是使用地面雷达系统进行的,这些系统是步行或雪机牵引的,因此范围有限,时间长。 -耗时、后勤成本高、在裂隙冰川地区操作危险或不可能。拟议的直升机雷达系统将缓解这些问题,首次允许在加拿大各地的冰川环境中大规模、安全地收集冰块数据。这将有助于首次准确估计格陵兰岛和南极洲以外世界上最大的冰川地区的冰量。 2021 年夏季,在育空地区的圣埃利亚斯山脉测试了试点直升机雷达系统,成功穿透冰层深度。拟议的系统将在此设计的基础上建立仪器以提高定位精度,改进平台空气动力学,更好的控制和采集软件以及雷达开发以能够穿透温带(熔点)冰层。 1000m 是必要的,因为稀疏的地面测量表明,育空地区和加拿大北极地区的大多数冰川都比 650m 深得多。通过直升机雷达系统收集的数据将解决的主要研究问题是:1。 ) 加拿大当地、区域和国家范围内的冰川质量是多少?;2) 与冰下地形和冰厚度相关的加拿大冰川流速的驱动因素是什么? 3) 未来五年内,将在目前缺乏冰厚度数据的育空地区、加拿大高纬度北极地区和不列颠哥伦比亚省的主要冰川上进行高分辨率直升机雷达调查,以了解冰川质量和动态变化。直接资助当前资助的研究项目,并为团队成员监督的各种学生提供关键数据。从长远来看(5-10年),调查将得出这三个地区的总冰川质量数据。收集的数据将使多个方面受益。除了直接合作者之外项目团队成员,并提供世界冰川监测服务(瑞士)和政府间气候变化专门委员会等组织所需的全球重要数据。

项目成果

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Dow, Christine其他文献

GLAcier Feature Tracking testkit (GLAFT): a statistically and physically based framework for evaluating glacier velocity products derived from optical satellite image feature tracking
GLAcier 特征跟踪测试套件 (GLAFT):一个基于统计和物理的框架,用于评估源自光学卫星图像特征跟踪的冰川速度产品
  • DOI:
    10.5194/tc-17-4063-2023
  • 发表时间:
    2023-01
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Zheng, Whyjay;Bhushan, Shashank;Van Wyk De Vries, Maximillian;Kochtitzky, William;Shean, David;Copland, Luke;Dow, Christine;Jones;Pérez, Fernando
  • 通讯作者:
    Pérez, Fernando
GLAcier Feature Tracking testkit (GLAFT): a statistically and physically based framework for evaluating glacier velocity products derived from optical satellite image feature tracking
GLAcier 特征跟踪测试套件 (GLAFT):一个基于统计和物理的框架,用于评估源自光学卫星图像特征跟踪的冰川速度产品
  • DOI:
    10.5194/tc-17-4063-2023
  • 发表时间:
    2023-01
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Zheng, Whyjay;Bhushan, Shashank;Van Wyk De Vries, Maximillian;Kochtitzky, William;Shean, David;Copland, Luke;Dow, Christine;Jones;Pérez, Fernando
  • 通讯作者:
    Pérez, Fernando

Dow, Christine的其他文献

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{{ truncateString('Dow, Christine', 18)}}的其他基金

A multi-scale analysis of subglacial hydrology and ice dynamics
冰下水文学和冰动力学的多尺度分析
  • 批准号:
    RGPIN-2017-03761
  • 财政年份:
    2022
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Individual
A multi-scale analysis of subglacial hydrology and ice dynamics
冰下水文学和冰动力学的多尺度分析
  • 批准号:
    RGPIN-2017-03761
  • 财政年份:
    2022
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Individual
A multi-scale analysis of subglacial hydrology and ice dynamics
冰下水文学和冰动力学的多尺度分析
  • 批准号:
    RGPIN-2017-03761
  • 财政年份:
    2021
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Individual
Glacier Hydrology And Ice Dynamics
冰川水文学和冰动力学
  • 批准号:
    CRC-2016-00053
  • 财政年份:
    2021
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Canada Research Chairs
A comprehensive analysis of surging glacier dynamics and controls in the Yukon Territory, Canada
加拿大育空地区冰川涌动动力学和控制的综合分析
  • 批准号:
    503534-2017
  • 财政年份:
    2021
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
A comprehensive analysis of surging glacier dynamics and controls in the Yukon Territory, Canada
加拿大育空地区冰川涌动动力学和控制的综合分析
  • 批准号:
    503534-2017
  • 财政年份:
    2021
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
A multi-scale analysis of subglacial hydrology and ice dynamics
冰下水文学和冰动力学的多尺度分析
  • 批准号:
    RGPIN-2017-03761
  • 财政年份:
    2021
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Individual
Glacier Hydrology And Ice Dynamics
冰川水文学和冰动力学
  • 批准号:
    CRC-2016-00053
  • 财政年份:
    2021
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Canada Research Chairs
A multi-scale analysis of subglacial hydrology and ice dynamics
冰下水文学和冰动力学的多尺度分析
  • 批准号:
    RGPIN-2017-03761
  • 财政年份:
    2020
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Discovery Grants Program - Individual
Glacier Hydrology and Ice Dynamics
冰川水文学和冰动力学
  • 批准号:
    CRC-2016-00053
  • 财政年份:
    2020
  • 资助金额:
    $ 10.87万
  • 项目类别:
    Canada Research Chairs

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