Enhanced Support for GPS Networks and Terrestrial Laser Scanning in Polar Regions

知识优势：UNAVCO提供nsf资助的pi大地测量工程，设备和数据管理和存档服务。通过作为国际极地年一部分资助的项目，这些服务在极地的应用显著增加。国际和平年的投资刺激了更详细的科学调查的激增，这在联阿援助团成立时是没有预料到的。美国目前的核心资金计划。因此，这些活动必须通过单独的提案来支持。极地大地测量网对冰冻圈、岩石圈、水圈和大气之间的相互作用以及控制全球海平面和气候变化的不断演变的物质平衡提供了一级约束。特别是，这些观测促进了对与陆地表面冰川均衡调整、冰川动力学和冰盖损耗以及构造有关的垂直变形的理解。拟议的地面激光扫描资源将支持广泛的地球科学调查，包括对表面和表面变化的详细测绘，包括断层陡坡、地质露头、断层表面粗糙度、霜多边形、熔岩湖、堤防、裂缝、冰川、柱状节理和山坡排水。更广泛的影响：极地大地测量调查与全球气候变化和海平面上升直接相关。极地研究的设施支持降低了广泛的研究者和学生参与这些科学调查的障碍，创造了服务于广泛和多样化的研究者群体的基础设施和数据集。该项目最广泛的影响是通过大学合作伙伴的研究得到支持。这些调查通常涉及学生和早期职业调查者，因此直接支持劳动力发展。通过科学贡献和劳动力发展对国家竞争力的影响在很大程度上是通过联阿援助团社区调查人员实现的，这些调查人员的学生和博士后得益于设施支持。

Intellectual Merit: UNAVCO provides NSF-funded PIs geodetic engineering, equipment, and data management and archiving services. Significant increases in polar applications of these services arose though projects funded as part of the International Polar Year. The IPY investment has stimulated a surge of more detailed scientific investigations that were not anticipated at the time when UNAVCO?s current core funding was planned. As such, these activities must be supported thought a separate proposal. Polar geodetic networks provide first order constraints on the interactions between the cryosphere, lithosphere, hydrosphere, and atmosphere, and the evolving mass balance that governs changes in global sea level and climate. In particular, these observations advance understanding of vertical deformation associated with glacial isostatic adjustment of the land surface, glacier dynamics and wasting of the ice sheets, and tectonics. The proposed terrestrial laser scanning resources will support a wide range of geoscience investigations including detailed mapping of surfaces and changes in surfaces including fault scarps, geologic outcrops, fault-surface roughness, frost polygons, lava lakes, dikes, fissures, glaciers, columnar joints and hillside drainages.Broader impacts: Polar geodetic investigations have direct relevance to changing global climate and sea level rise. Facility support for polar studies lowers the barriers for broad investigator and student involvement in these science investigations, creating infrastructure and data sets that serve broad and diverse investigator communities. The broadest impact of the project is through the university partners whose research is supported. These investigations commonly involve students and early career investigators, and thus directly support workforce development. The impact on national competitiveness, both through science contributions and on workforce development, is largely realized through UNAVCO community investigators whose students and post-docs are enabled by facility support.