Whither the Transportable Magnetotelluric (MT) Array: Proposal for an EarthScope Community Workshop to Prioritize Targets for Transportable MT Deployments

可移动大地电磁 (MT) 阵列的去向：关于召开 EarthScope 社区研讨会的提案，以优先考虑可移动大地电磁 (MT) 部署的目标

• 批准号: 0746025
• 负责人: Philip Wannamaker
• 金额: $ 2.84万
• 依托单位: University of Utah
• 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: 2008-04-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0746025&HistoricalAwards=false
• 关键词: Whither; Transportable; Magnetotelluric; MT; Array

EarthScope is installing transportable magnetotelluric (MT) stations to record the plane-wave electromagnetic (EM) scattering signature of the Earth. These data are used to image the electrical conductivity of the Earth and produce new insights into the composition and physicochemical state of its interior. Magnetotelluric instruments are being deployed at permanent sites, and instruments are being used for mobile observations as well. The 20 magnetotelluric systems of the transportable array (TA) are each deployed for 1-month durations across the contiguous US with a spatial sampling of approximately 70 km in regions of identified interest. Funding limits the size of the deployments to ~60 sites/year. This proposal requests funds to support participants attending a short (1-day) workshop for 20 EarthScope scientists immediately prior to the IRIS Annual Workshop (4-6 June, 2008) to consider suggestions for target areas in 2009 and beyond. The key consideration for targets will be based upon community need, and the applicability of joint interpretation of conductivity with seismic velocity and attenuation to provide better constraints on composition and physicochemical state.

EarthScope 正在安装可移动的大地电磁 (MT) 站来记录地球的平面波电磁 (EM) 散射特征。这些数据用于对地球的电导率进行成像，并对其内部的成分和物理化学状态产生新的见解。 大地电磁仪器正在永久部署，仪器也用于移动观测。 可移动阵列 (TA) 的 20 个大地电磁系统均在美国本土部署了 1 个月，在已确定感兴趣的区域进行了约 70 公里的空间采样。 资金将部署规模限制为每年约 60 个站点。 该提案要求提供资金支持参加者在 IRIS 年度研讨会（2008 年 6 月 4-6 日）之前参加由 20 名 EarthScope 科学家参加的短期（1 天）研讨会，以考虑针对 2009 年及以后目标领域的建议。目标的关键考虑因素将基于社区需求，以及电导率与地震速度和衰减的联合解释的适用性，以对成分和物理化学状态提供更好的约束。