Community Workshop: The future of PBO in the GAGE Facility (2013-2018) and after EarthScope

社区研讨会：GAGE 设施（2013-2018 年）和 EarthScope 之后 PBO 的未来

• 批准号: 1441122
• 负责人: Glen Mattioli
• 金额: $ 6.04万
• 依托单位: UNAVCO, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1441122&HistoricalAwards=false
• 关键词: Community; Workshop; future; PBO; GAGE

Mattioli1441122This grant will support a focused three day workshop in Colorado in early fall 2014. The purpose of the workshop is to bring together various stakeholders to discuss the future of the Plate Boundary Observatory (PBO) continental scale geodetic network in the U.S. PBO consists of approximately 1100 continuously operating Global Positioning System receivers installed across the U.S. but with increased density in the Western U.S. near the active plate margin of the North American plate. Here, crustal deformation rates are high and earthquakes are concentrated along the San Andreas and associated transform faults. Offshore the Pacific Northwest and southern Alaska ocean crust is subducted beneath the North American plate leading to active volcanic processes in the Cascades and Aleutians and where large tsunamigenic earthquakes have been recorded in the historical record. PBO also includes other geodetic sensing modalities including borehole strainmeters (BSM) and seismometers, long baseline laser strain meters (LSM), tiltmeters and surface meteorological measurements. Geodetic observations are recorded at a range of frequencies and some 400 of the 1100 GPS stations record at high rates (1 Hz) and transmit data in real time. All PBO data and data products are archived centrally UNAVCO, Inc. (www.unavco.org) and are freely available via internet web access. PBO data products are used to address a wide range of scientific and technical issues across North America. A large US and international community of surveyors and civil engineers access PBO data streams, software, and other on-line resources daily. The western US and Alaska, where over 95% of the PBO sensor assets are located, have experienced and will continue to experience significant and potentially damaging geophysical events like earthquakes, volcanic eruptions, and tsunamis. The science facilitated by PBO provides first-order constraints on geophysical processes to support hazards mapping and zoning and for earthquake early warning applications currently under development. Under a new NSF-UNAVCO, Inc. five-year Cooperative Agreement, PBO along with globally distributed geodetic infrastructure used for precise positioning via GPS and to support satellite and spacecraft orbital positioning, are now managed as part of the so-called GAGE facility (Geodesy Advancing Geosciences and EarthScope). In FY 2013, budget challenges led to a directed cut to the baseline GAGE support from NSF from operational costs incurred in FY 2012 and previous. Thus, the workshop will seek to identify the longer term ramifications of that rebaselining and how scientific and other priorities will help define what components of PBO, in particular, are at risk of being terminated in the near future under the period of the GAGE five year Cooperative Agreement (2013-2018). The workshop will support a meeting of a number of scientific and technical leaders with a wide variety of scientific interests, representatives from the commercial sector who either have current products or business models based on free and open access to the Plate Boundary Observatory (PBO) geodetic facility data and data products, or who may have an interest in developing new business or products based on PBO assets and streams in the future, and relevant federal and state agency representatives. The workshop will result in a report and web resources encapsulating community-vetted recommendations. ***

Mattioli1441122这笔赠款将支持 2014 年初秋在科罗拉多州举办的为期三天的重点研讨会。该研讨会的目的是汇集各个利益相关者，讨论美国板块边界观测站 (PBO) 大陆规模大地测量网络的未来。PBO 大约由以下人员组成：美国各地安装了 1100 个持续运行的全球定位系统接收器，但美国西部靠近北美板块活跃板块边缘的密度有所增加。 这里，地壳变形率很高，地震集中在圣安德烈亚斯和相关的转换断层沿线。 西北太平洋近海和阿拉斯加南部的洋壳俯冲到北美板块之下，导致喀斯喀特群岛和阿留申群岛发生活跃的火山活动，历史记录中曾记录过这些地方发生过大型海啸地震。 PBO 还包括其他大地测量传感模式，包括钻孔应变仪 (BSM) 和地震仪、长基线激光应变仪 (LSM)、倾斜仪和表面气象测量。 大地测量观测以一定频率范围记录，1100 个 GPS 站中约有 400 个以高速率 (1 Hz) 记录并实时传输数据。 所有 PBO 数据和数据产品均集中存档于 UNAVCO, Inc. (www.unavco.org)，并可通过互联网免费访问。 PBO 数据产品用于解决北美地区的各种科学和技术问题。美国和国际测量师和土木工程师的大型社区每天都会访问 PBO 数据流、软件和其他在线资源。超过 95% 的 PBO 传感器资产位于美国西部和阿拉斯加，它们已经并将继续经历重大且具有潜在破坏性的地球物理事件，如地震、火山爆发和海啸。 PBO 推动的科学提供了地球物理过程的一阶约束，以支持灾害绘图和分区以及目前正在开发的地震早期预警应用。根据新的 NSF-UNAVCO, Inc. 五年合作协议，PBO 以及用于通过 GPS 精确定位并支持卫星和航天器轨道定位的全球分布的大地测量基础设施，现在作为所谓的 GAGE 设施的一部分进行管理（大地测量学推进地球科学和地球范围）。 2013 财年，预算挑战导致 NSF 直接削减了 2012 财年及之前产生的运营成本中的基准 GAGE 支持。 因此，研讨会将寻求确定重新设定基线的长期影响，以及科学和其他优先事项将如何帮助确定 PBO 的哪些组成部分，特别是在不久的将来在 GAGE 五年期间面临被终止的风险。合作协议（2013-2018）。 该研讨会将支持众多具有广泛科学兴趣的科学和技术领导者、来自商业部门的代表举行会议，他们要么拥有基于免费开放的板块边界观测站（PBO）大地测量的当前产品或商业模式设施数据和数据产品，或未来可能有兴趣基于 PBO 资产和流开发新业务或产品的人员，以及相关联邦和州机构代表。 研讨会将产生一份报告和网络资源，其中包含经过社区审查的建议。 ***