RAPID: Bering Glacier Surge--Observation, Analysis and Parameterization

RAPID：白令冰川激增——观测、分析和参数化

• 批准号: 1148800
• 负责人: Ute Herzfeld
• 金额: $ 16.88万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1148800&HistoricalAwards=false
• 关键词: RAPID; Bering; Glacier; Surge; Observation

Funds are provided to observe, document and analyze the current surge of Bering Glacier and derive parameters that capture deformation characteristics during surge stages and provide information that may facilitate mechanical modeling of fast glacier movement. Observations will include aerial GPS, video and photographic data, fixed laser profilometry and time-sequenced satellite imagery. Analysis of the surge propagation will employ an automated spatial-statistical/connectionist approach developed by the PI, this allows derivation of deformation characteristics, as evident in surge crevasse structures from imagery, and linkage of them to ice dynamics.Glacier surges can have an immediate and detrimental impact on ecosystems situated in their path. Few such surges have been carefully observed and described making it difficult to understand what characteristics of surging glaciers can be expected as typical and what range of variability is realistic to anticipate. This makes long-range management planning and risk assessment for such systems difficult. The proposed research will contribute to the resolution of this issue.

该项目为观察、记录和分析白令海冰川当前的涌浪提供了资金，并获得了捕捉涌浪阶段变形特征的参数，为冰川快速运动的力学建模提供了信息。观测将包括空中GPS、视频和摄影数据、固定激光轮廓测量和时间序列卫星图像。对涌浪传播的分析将采用PI开发的自动空间统计/连接方法，这可以从图像中推导出涌浪裂缝结构的变形特征，并将它们与冰动力学联系起来。冰川涌动会对沿途的生态系统产生直接和有害的影响。很少有人仔细观察和描述过这样的涌流，因此很难理解涌流冰川的哪些特征可以被认为是典型的，以及什么变化范围是可以实际预测的。这使得这类系统的长期管理规划和风险评估变得困难。提出的研究将有助于解决这一问题。

项目成果

Spatiotemporal mapping of a large mountain glacier from CryoSat-2 altimeter data: surface elevation and elevation change of Bering Glacier during surge (2011–2014)

根据 CryoSat-2 高度计数据绘制大型山地冰川时空图：白令冰川涌动期间的表面高程和高程变化（2011 年至 2014 年）

• DOI: 10.1080/01431161.2016.1187318
• 发表时间: 2016
• 期刊: International Journal of Remote Sensing
• 影响因子: 3.4
• 作者: Trantow, T.;Herzfeld, U. C.
• 通讯作者: Herzfeld, U. C.

Evolution of a Surge Cycle of the Bering‐Bagley Glacier System From Observations and Numerical Modeling

从观测和数值模拟看白令巴格利冰川系统的涌动周期的演变

• DOI: 10.1029/2023jf007306
• 发表时间: 2024
• 期刊: Journal of Geophysical Research: Earth Surface
• 作者: Trantow, Thomas;Herzfeld, Ute C.
• 通讯作者: Herzfeld, Ute C.

Sensitivity of glacier elevation analysis and numerical modeling to CryoSat-2 SIRAL retracking techniques

• DOI: 10.1016/j.cageo.2020.104610
• 发表时间: 2021
• 期刊: Comput. Geosci.
• 作者: T. Trantow;U. Herzfeld;V. Helm;J. Nilsson