Greenland-wide Assessment of Proglacial Melange Variability and Implications for Glacier Retreat
格陵兰范围前冰川混杂物变异性及其对冰川退缩的影响的评估
基本信息
- 批准号:2336627
- 负责人:
- 金额:$ 40.85万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2024
- 资助国家:美国
- 起止时间:2024-02-01 至 2027-01-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Over two hundred outlet glaciers line the edges of the Greenland ice sheet, where they drain thick ice from the interior into the surrounding ocean. As these glaciers retreat and speed up, they remove mass from the ice sheet at a faster rate. Therefore, to quantify and predict Greenland’s role in global sea level rise, it is important to understand what processes drive patterns of glacier advance and retreat. This project uses satellite data to study the impact of ice mélange, or the mixture of sea ice and icebergs, on the timing and magnitude of glacier retreat in Greenland. Because the distribution of mélange is not well known, this project will first measure mélange coverage, show when it forms and breaks up around the ice sheet, and create maps and time series for other scientists to use in their research. The project team will then compare these data products to measurements of changing glacier fronts through time to investigate whether mélange in front of glaciers can limit retreat, identify where mélange is most important, and quantify if mélange coverage is changing over time. Led by an early career investigator on her first NSF award, this project will promote the full participation of women in STEM and accomplish several broader impacts beyond addressing important scientific questions. The team will increase representations and public science literacy by recruiting summer undergraduate researchers through channels aimed at promoting diversity, by participating in interactive glacier-related activities at public educational events, and by volunteering in guest speaking engagements at elementary through university-level classrooms. Outlet glaciers that flow out into the surrounding ocean are an important component of the Greenland ice sheet mass balance, and changes in outlet glacier length and speed can affect how rapidly ice is removed from the ice sheet through time. In areas where icebergs break off from calving glaciers, sea ice may intermix with icebergs and form a refrozen, semi-rigid mixture called mélange. Mélange can build up in the fjord and crowd the area near the glacier calving front, potentially limiting how much and for how long retreat can occur. Despite its likely impact on changing seasonal patterns of outlet glacier retreat and speed, neither the total area of mélange nor the timing and duration of its coverage have yet been measured on an ice sheet-wide scale. This project will conduct the first robust, large-scale assessment of mélange conditions in Greenland to quantify the role of mélange in outlet glacier behavior and its net impact on glacier and ice sheet mass loss. The study will heavily utilize radar data from the Sentinel-1 satellite mission, which images most areas of the Greenland coastline every 6 to 12 days, and adapt existing methods of glacier speed tracking to function over regions of consolidated, or rigid, mélange in outlet glacier fjords. In doing so, the project will also develop and distribute important new data products that map the location of rigid mélange conditions through time and combine the ~weekly maps to measure how often mélange is present at specific sites around Greenland. Through collaborative efforts with existing datasets and tools, the project team will compare the mélange data to measurements of glacier front changes, including front position, ice thickness, and glacier shape, as well as iceberg size and distribution. These analyses will be used to better understand how the local geographic and environmental conditions relate to mélange formation, and finally, help identify where mélange formation is most important for glacier calving. Outcomes of this work will include broader impacts that extend beyond the scientific merit. In addition to adopting open science principles in the development and sharing of new datasets, the team will also integrate activities and approaches aimed at increasing the representation and participation of minoritized groups in STEM, and at improving public polar literacy and engagement in science and technology. The project’s principal investigator is an early career woman leading her first NSF-supported study, and she will work closely with existing programs designed to serve underrepresented populations when recruiting students for paid summer research experiences that are complementary to the project’s goals. The team will also participate in glacier-related demonstrations in a public-facing, community educational event, and the lead investigator will incorporate project results and outcomes into guest speaking engagements planned for elementary through university-level classrooms.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
超过200个出口冰川排列在格陵兰冰盖的边缘,在那里它们将厚厚的冰从内部排入周围的海洋。随着这些冰川退缩和加速,它们以更快的速度从冰盖上移除质量。因此,为了量化和预测格陵兰岛在全球海平面上升中的作用,重要的是要了解什么过程驱动冰川前进和后退的模式。该项目利用卫星数据研究海冰和冰山的混合物对格陵兰冰川退缩的时间和幅度的影响。由于混杂岩的分布并不为人所知,该项目将首先测量混杂岩的覆盖范围,显示它何时在冰盖周围形成和破裂,并为其他科学家创建地图和时间序列,供他们在研究中使用。然后,项目团队将把这些数据产品与随时间变化的冰川前沿的测量结果进行比较,以调查冰川前的混合物是否可以限制退缩,确定混合物最重要的位置,并量化混合物覆盖范围是否随时间变化。 由她的第一个NSF奖的早期职业调查员领导,该项目将促进妇女在STEM中的充分参与,并在解决重要的科学问题之外实现几个更广泛的影响。该团队将通过旨在促进多样性的渠道招募暑期本科研究人员,通过参与公共教育活动中与冰川相关的互动活动,以及通过在小学到大学课堂的客座演讲活动中志愿服务,来增加代表性和公众科学素养。流入周围海洋的出口冰川是格陵兰冰盖质量平衡的重要组成部分,出口冰川长度和速度的变化会影响冰从冰盖中移除的速度。在冰山从崩解冰川上脱落的地区,海冰可能与冰山混合,形成一种重新冻结的半刚性混合物,称为混合物。混合物可以在峡湾中积聚,并聚集在冰川崩解前沿附近的区域,这可能会限制退缩的程度和时间。尽管它可能会影响出口冰川退缩和速度的季节性变化模式,但无论是混合区的总面积还是其覆盖的时间和持续时间都尚未在冰盖范围内进行测量。该项目将对格陵兰岛的混合物状况进行首次可靠的大规模评估,以量化混合物在出口冰川行为中的作用及其对冰川和冰盖质量损失的净影响。这项研究将大量利用哨兵-1号卫星使命的雷达数据,该卫星每6至12天对格陵兰海岸线的大部分地区进行一次成像,并调整现有的冰川速度跟踪方法,以适用于出口冰川峡湾中的固结或刚性混合区。在这样做的过程中,该项目还将开发和分发重要的新数据产品,绘制不同时间的严格混杂情况的位置图,并将联合收割机每周的地图结合起来,以测量格陵兰周围特定地点混杂的频率。通过与现有数据集和工具的合作,项目团队将把混合数据与冰川前沿变化的测量结果进行比较,包括前沿位置、冰厚度和冰川形状,以及冰山的大小和分布。这些分析将用于更好地了解当地的地理和环境条件如何与混杂岩的形成,并最终帮助确定混杂岩的形成对冰川崩解最重要的地方。这项工作的成果将包括超出科学价值的更广泛的影响。除了在新数据集的开发和共享中采用开放科学原则外,该团队还将整合旨在提高STEM中少数群体的代表性和参与度以及提高公众极地素养和参与科学技术的活动和方法。该项目的首席研究员是一位早期职业女性,领导她的第一个NSF支持的研究,她将与现有的计划密切合作,旨在为代表性不足的人群招募学生进行有偿暑期研究经验,以补充项目的目标。该团队还将参加一个面向公众的社区教育活动中与冰川相关的演示,首席研究员将把项目结果和成果纳入计划在小学到大学课堂的客座演讲活动中。该奖项反映了NSF的法定使命,并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估来支持。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Michalea King其他文献
Michalea King的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
相似国自然基金
基于慧眼-HXMT宽能段观测的X射线吸积脉冲星磁场研究
- 批准号:12373051
- 批准年份:2023
- 资助金额:55.00 万元
- 项目类别:面上项目
多层次纳米叠层块体复合材料的仿生设计、制备及宽温域增韧研究
- 批准号:51973054
- 批准年份:2019
- 资助金额:60.0 万元
- 项目类别:面上项目
CFHTLS-Wide和CFHTLS-Stripe82观测的弱引力透镜星系团巡天
- 批准号:11103011
- 批准年份:2011
- 资助金额:25.0 万元
- 项目类别:青年科学基金项目
精神分裂症全基因组关联研究的通路分析及验证
- 批准号:81071087
- 批准年份:2010
- 资助金额:35.0 万元
- 项目类别:面上项目
非吸烟肺癌表皮生长因子受体基因相关非编码小RNA差异表达研究
- 批准号:81071914
- 批准年份:2010
- 资助金额:36.0 万元
- 项目类别:面上项目
超高频超宽带系统射频基带补偿理论与技术的研究
- 批准号:61001097
- 批准年份:2010
- 资助金额:22.0 万元
- 项目类别:青年科学基金项目
孤独症全基因组关联第二阶段研究
- 批准号:81071110
- 批准年份:2010
- 资助金额:32.0 万元
- 项目类别:面上项目
相似海外基金
Clinical and Nutrigenetic Assessment of Zinc in Patients with Prediabetes
糖尿病前期患者锌的临床和营养遗传学评估
- 批准号:
10713103 - 财政年份:2023
- 资助金额:
$ 40.85万 - 项目类别:
Integrating genetic and ecological momentary assessment technologies to advance models of PTSD-AUD comorbidity
整合遗传和生态瞬时评估技术来推进 PTSD-AUD 共病模型
- 批准号:
10735391 - 财政年份:2023
- 资助金额:
$ 40.85万 - 项目类别:
Integrating Genomic Risk Assessment for Chronic Disease Management in a Diverse Population
整合基因组风险评估以进行不同人群的慢性病管理
- 批准号:
10852376 - 财政年份:2023
- 资助金额:
$ 40.85万 - 项目类别:
Multifactor risk scores with susceptibility gene mutations to enhance risk assessment of pancreatic cancer
多因素风险评分与易感基因突变可增强胰腺癌的风险评估
- 批准号:
10657936 - 财政年份:2023
- 资助金额:
$ 40.85万 - 项目类别:
Wide-area assessment of desertification of using bioaerosols: A novel method
利用生物气溶胶对荒漠化进行大面积评估:一种新方法
- 批准号:
23KK0014 - 财政年份:2023
- 资助金额:
$ 40.85万 - 项目类别:
Fund for the Promotion of Joint International Research (International Collaborative Research)
Bioinformatics resources for genome-wide assessment of protein function at the proteoform level
用于在蛋白质水平水平上对蛋白质功能进行全基因组评估的生物信息学资源
- 批准号:
RGPIN-2018-05645 - 财政年份:2022
- 资助金额:
$ 40.85万 - 项目类别:
Discovery Grants Program - Individual
Automatic Wide-Field Optical Coherence Tomography for Assessment of Transplant Kidney Viability
用于评估移植肾活力的自动广域光学相干断层扫描
- 批准号:
10700999 - 财政年份:2022
- 资助金额:
$ 40.85万 - 项目类别:
Automatic Wide-Field Optical Coherence Tomography for Assessment of Transplant Kidney Viability
用于评估移植肾活力的自动广域光学相干断层扫描
- 批准号:
10501992 - 财政年份:2022
- 资助金额:
$ 40.85万 - 项目类别:
Development of a Remote Health and Activity Monitoring Assessment Tool with Ultra-Wide-Band Tracking
开发具有超宽带跟踪功能的远程健康和活动监测评估工具
- 批准号:
573021-2022 - 财政年份:2022
- 资助金额:
$ 40.85万 - 项目类别:
University Undergraduate Student Research Awards
Assessment of the genetic structure of the heart for the implementation of novel methods in the joint analysis of genome-wide association studies (GWAS) with an inclusive ancestral approach to enhance pathophysiological pathway discovery and improve genom
评估心脏的遗传结构,以在全基因组关联研究(GWAS)联合分析中实施新方法,并采用包容性祖先方法来增强病理生理学途径发现并改善基因组
- 批准号:
476714 - 财政年份:2022
- 资助金额:
$ 40.85万 - 项目类别:
Fellowship Programs