Supporting Big Island's Key Geodetic Infrastructure

1262093促进地球科学仪器和设施计划拨款支持购买和纪念全球定位系统(GPS)设备，以升级和增强夏威夷大岛上现有的GPS网络。具体地说，基拉韦厄的六个已有16年历史的GPS站点将被新的接收器和天线取代，夏威夷西海岸的五个临时站点将进行升级，使其成为持续运营的遥测网络的一部分。启用和保护的全球定位系统观测将支持对与基拉韦厄火山和毛纳罗亚火山活动有关的地下岩浆活动和相关构造(例如基拉韦厄山脉南侧的缓慢滑移)的研究，以及通过全球定位系统便利的对流层可降水水汽测量对区域气象动力学的研究。更好地了解慢滑事件及其与地震周期的关系，对于了解导致可能引发海啸的大地震的条件至关重要。基拉韦厄？S南侧作为一种大型海底滑坡延伸到水下，如果它灾难性地坍塌，将引发东太平洋范围的海啸。更清楚地了解这一特征及其机械和动力学行为，以及它与岩浆过程的联系，将大大有助于危险评估。这一升级促进了改进的地方参照框架，将使民用、研究和工业界受益。***

1262093FosterThis Division of Earth Sciences Instrumentation and Facilities Program grant supports acquisition and monumentation of Global Positioning System (GPS) equipment to upgrade and augment an existing GPS network on Hawaii's Big Island. Specifically, six 16-year old GPS sites on Kilauea will be replaced with new receivers and antennas and five temporary sites on Hawaii's west coast will be upgraded to make them part of the continuously operating, telemetered network. The GPS observations enabled and secured will support research on the subsurface magmatic activity associated with active vulcanism within Kilauea and Mauna Loa and related tectonics (e.g., slow slip on the south flank of Kilauea) as well as studies of regional meteorological dynamics through GPS facilitated measurements of precipitable water vapor in the troposphere. A better understanding of slow slip events and their relationship to the earthquake cycle is of fundamental importance in understanding the conditions leading to major, possibly tsunamigenic, earthquakes. Kilauea?s south flank extends underwater as a major submarine landslide that would cause an eastern Pacific-wide tsunami should it collapse catastrophically. Clearer understanding of this feature and its mechanical and dynamical behavior, and its connection to magmatic processes, will significantly assist hazard assessments. The improved local reference frame facilitated by this upgrade would benefit the civil, research and industrial communities. ***