Collaborative Research: GPS Measurement of Crustal Deformation at Pinatubo and Taal Volcanoes, Philippines

9726024汉堡这个合作提案（印第安纳州大学和UCAR）寻求资金，以支持与菲律宾皮纳图博和塔尔两个活火山岩浆活动有关的地壳变形研究。 这两个火山提供了一个机会，以研究与两个相邻的，但非常不同的火山系统-爆炸，俯冲相关，英安岩层状火山（皮纳图博）和伸展玄武安山质火山复合体（TAAL）的岩浆动力学。 这些火山监测员将利用最先进的全球定位系统测量技术，包括C 0-PI Meertens公司目前正在开发的新开发的低成本单频火山监测系统，对地壳的垂直和水平运动进行精确测量。 该提案要求为数据收集和分析提供资金;在NSF仪器设备计划的第二个配套提案中要求为GPS仪器设备提供资金。 该项目的主要科学目标包括： (1)提高对与两座火山的活火山过程有关的岩浆系统的认识;（2）分析1991年皮纳图博灾难性火山爆发后的长期喷发后过程;（3）通过开发实时火山监测系统，对（塔尔）岩浆运动进行精确的空间控制;（4）查明构造和火山系统之间的空间和时间相互作用-皮纳图博的菲律宾断层和塔尔的马里基纳断层;（5）开发和测试用于火山监测的新的、最先进的地壳变形测量系统。 这些措施包括在火山侧面沿着密集剖面使用实时动态测量，以及首次实地测试新开发的单频全球定位系统火山监测系统。 具体来说，PI研究计划包括以下几个方面的实验：（1）高精度（亚厘米精度）皮纳图博、塔尔和菲律宾及马里基纳断层周围断层监测网的静态GPS测量（第1年）;（2）较低精度（1-2厘米精度）RTK测量沿着两座火山密集剖面（第1年）;（3）研制连续、三站、实时遥测、高精度（4）利用伯尔尼软件分析静态和实时网络的数据;（5）在Taal周围安装和实地测试10个单频厘米级精度GPS站阵列（第2年）;（6）分析双频和单频网络的数据，并与Savoie大学同事正在开发的并行系统进行比较（第2-3年）。

9726024 Hamburger This collaborative proposal (Indiana University and UCAR) seeks funds to support a study of crustal deformation associated with magmatic activity on two active volcanoes in the Philippines, Pinatubo and Taal. The two volcanoes offer an opportunity to examine magma dynamics associated with two neighboring, but very distinct volcanic systems - an explosive, subduction-related, dacitic stratovolcano (Pinatubo) and an extensional basaltic-andesitic volcano complex (TAAL). The PIs will use precise measurements of vertical and horizontal movements of the Earth's crust using state-of-the-art Global Positioning System (GPS) measurements, including a newly developed, low-cost, single-frequency volcanic monitoring system currently in development by C0-PI Meertens. This proposal requests funds for data collection and analysis; funds for the GPS instrumentation are requested in a second, companion proposal to the NSF instrumentation & Facilities program. Among the principal scientific objectives of the project are: (1) improved understanding of the magmatic systems associated with active volcanic processes at the two volcanoes; (2) analysis of long-term post-eruptive processes in the aftermath of Pinatubo's cataclysmic volcanic eruption of 1991; (3) refined spatial control on magma movement (at Taal) via development of a real-time volcanic monitoring system; (4) identification of spatial and temporal interactions between tectonic structures and volcanic systems - the Philippine Fault in the case of Pinatubo, and the Marikina Fault for Taal; and (5) development and testing of new, state-of-the-art crustal deformation measurement systems for volcanic monitoring. These include use of real-time kinematic (RTK) measurements along dense profiles on the volcanoes flanks, and a first field test of newly developed, single-frequency GPS volcanic monitoring system. Specifically, the PIs research plan includes the following experiments: (1) high-precision (sub-cm accuracy) static GPS meas urements at Pinatubo, Taal, and fault-monitoring networks around the Philippines and Marikina faults (Year 1); (2) lower-precision (1-2 cm accuracy) RTK measurements along dense profiles on the two volcanoes (Year 1); (3) development of a continuous, three-station, real-time telemetered, high-precision (dual-frequency) GPS network around Taal Volcano (Year 1); (4) analysis of data from static and real-time networks using Bernese software; (5) installation and field testing of a 10-station array of single-frequency, cm-level-precision GPS stations around Taal (Year 2); and (6) analysis of data from the dual and single-frequency networks, and comparison with a parallel system in development by colleagues at the University of Savoie (Years 2-3).