Greenland Ice Sheet Monitoring Network (GLISN) Operations

格陵兰冰盖监测网络 (GLISN) 运营

• 批准号: 1304011
• 负责人: Robert Woodward
• 金额: $ 126.6万
• 依托单位: Incorporated Research Institutions for Seismology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2023-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1304011&HistoricalAwards=false
• 关键词: Greenland; Ice; Sheet; Monitoring; Network

The Greenland Ice Sheet Monitoring Network (GLISN) is a broadband, multi-use seismological network, enhanced by selected geodetic observations, designed with the capability to allow researchers to understand the changes currently occurring in the Arctic, and with the operational characteristics necessary to enable response to those changes as understanding improves. GLISN was established through an international collaboration, with 10 nations coordinating their efforts to develop the current 32-station observing network during the last four years. This project will continue operations of six key stations of the network, as well as data quality control and data-management for the network. It will also improve the telemetry capability at remote stations to maximize the scientific utility of the data, reduce data latency, and reduce logistics costs. Continued leadership by IRIS in the management and coordination of the International GLISN effort will ensure continued return of high-quality data from the full 32-station network. Observations from the GLISN network will allow improved estimation of the Earth structure under Greenland, critical for reliable estimation, interpretation, and prediction of changes in ice mass, sea level, and the crustal stress state. These observations will also allow greatly improved analysis of deformation within the ice sheet and at its calving margins due to processes including discrete ice-loss events, melt-water drainage, crevassing, and basal sliding. Seismic analysis provides unique information about glacier dynamics and sub-glacial geology, complementing other remote-sensing and in-situ observations. GLISN science and outreach will leverage and enhance outreach and education programs undertaken by the IRIS Consortium and its community.

格陵兰冰盖监测网是一个宽带、多用途地震网络，通过选定的大地测量观测得到加强，其设计能够使研究人员了解北极目前发生的变化，并具有必要的业务特点，以便随着了解的加深能够对这些变化作出反应。全球激光信息系统网络是通过国际合作建立的，在过去四年中，有10个国家协调努力，发展目前的32个台站观测网络。 该项目将继续运行该网络的六个关键台站，以及该网络的数据质量控制和数据管理。它还将提高远程站的遥测能力，以最大限度地提高数据的科学效用，减少数据延迟，并降低后勤成本。综合区域信息系统在管理和协调国际全球定位系统网络工作方面继续发挥领导作用，将确保从全部32个台站网络持续返回高质量数据。 通过全球定位系统网络的观测，将能够更好地估计格陵兰下的地球结构，这对于可靠地估计、解释和预测冰量、海平面和地壳应力状态的变化至关重要。 这些观测结果也将大大改善对冰盖内部及其产犊边缘变形的分析，这些变形是由于离散的冰损失事件、融水排放、裂隙和基底滑动等过程造成的。地震分析提供了关于冰川动态和冰下地质的独特信息，补充了其他遥感和现场观测。 GLISN科学和推广将利用和加强IRIS联盟及其社区开展的推广和教育计划。