Test of 3C recording with 1C instruments in association with High Lava Plains field program, for crustal shear-wave velocity, anisotropy, and lithology.

与高熔岩平原现场计划相关的 1C 仪器的 3C 记录测试，用于地壳剪切波速度、各向异性和岩性。

• 批准号: 0821785
• 负责人: Simon Klemperer
• 金额: $ 5万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0821785&HistoricalAwards=false
• 关键词: Test; 3C; recording; 1C; instruments

This is an SGER award which will take advantage of dynamite explosions during a previously funded CD project (the High Lava Plains Experiment). The PIs will collect high-resolution (100 m spacing, 1 ms temporal sampling) P ? and S ? wave profiles at multiple azimuths in south-eastern Oregon. The data will be analyzed for anisotropy and S ? wave velocity, utilizing the high spatial resolution. Although some preliminary observations of crustal anisotropy have been made in the USA, it has not normally been possible to localize their depth extent, because passive observations are typically made at far lower frequencies (coarser resolution) than active-source measurements. Hence the need to make 3 component (3C) active-source measurements to complement the now standard 3C passive-source receiver-function methods. If the PIs are successful, their results, in conjunction with the existing CD funded explosive-source refraction velocity model and receiver function images, will help estimate the relative roles of magmatic intrusions and crustal flow in maintaining crustal thickness in SE Oregon.In addition to collecting data of scientific interest to the CD-funded High Lava Plains Experiment, the PIs will demonstrate the technical feasibility of using three one-component (1C) recorders in parallel at a single site to record 3C data. Success in the latter aim will open a path to fuller utilization of the PASSCAL and EarthScope Texan recording facility, more complete recording of the waveforms generated by NSF-funded controlled-source experiments, and extraction of additional scientific results from future experiments. IRIS is arranging fabrication of 300 ?harnesses? to connect 900 existing 1C recorders (Texans) in groups of 3 to 300 existing 3C 4.5 Hz geophones, at no charge to this project.

这是一个SGER奖，它将在先前资助的CD项目（高熔岩平原实验）期间利用炸药爆炸。 PI会收集高分辨率（100 m间距，1 ms时间抽样）P？和s？俄勒冈州东南部多个方位角的波浪曲线。 将分析各向异性和s的数据？波速，利用高空间分辨率。 尽管在美国已经对地壳各向异性进行了一些初步观察结果，但通常不可能将其深度范围定位，因为通常在频率较低（更粗糙的分辨率）中比有效源测量值进行被动观察。 因此，需要制作3个组件（3C）活动源测量值以补充现在标准的3C被动源接收器 - 接收器功能方法。 如果PI成功，它们的结果与现有的CD资助的爆炸性爆炸性折射速度模型和接收器功能图像结合在一起，将有助于估算岩浆入侵和在维持地壳厚度中的相对作用，并在SE OREGON中维持地壳厚度中的外壳厚度。 （1C）在单个站点上并行记录以记录3C数据。 后一个目标的成功将为Passcal和Earthscope Texan记录设施提供更全面利用的途径，对NSF资助的受控源实验产生的波形的更完整记录，并从未来实验中提取了其他科学结果。 虹膜正在安排300座安全带的制造吗？将900个现有的1C录音机（德克萨斯人）连接为3至300个现有3C 4.5 Hz地球座的组，该项目不收取该项目。