Crustal and Upper Mantle Velocity Structure Along the Trans-Alaska Crustal Transect Using Inversion of TeleseismicReceiver Functions

使用远震接收函数反演沿跨阿拉斯加地壳横断面的地壳和上地幔速度结构

• 批准号: 9004112
• 负责人: Douglas Christensen
• 金额: $ 5万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004112&HistoricalAwards=false
• 关键词: Crustal; Upper; Mantle; Velocity; Structure

This research is to determine the velocity structure at points along the TACT (Trans-Alaska Crustal Transect) reflection/ refraction profile, using the technique of time domain inversion of teleseismic receiver functions. The first stage will be to use existing data from DWWSSN station COL to determine the velocity structure beneath the Fairbanks area, which lies in the Tanana-Yukon terrane and near the transect line. The next stage will be to establish at least 5 seismic stations along the TACT line between Fairbanks and Valdez, Alaska. These stations, which will utilize State of Alaska microwave facilities, will collect teleseismic data through the winter of 1990-91 (6-7 months) which can then be inverted for the velocity structure beneath the individual stations.

本研究是为了确定点处的速度结构 沿着TACT（跨阿拉斯加地壳断面）反射/ 折射剖面，采用时间域反演技术 接收器的功能。 第一阶段将是 使用DWWSSN站COL的现有数据确定 费尔班克斯地区下方的速度结构，位于 Tanana-Yukon Yangtae和样带线附近。 下一阶段 将在TACT沿线沿着建立至少5个地震台站 位于阿拉斯加的费尔班克斯和巴尔德斯之间。 这些车站， 将利用阿拉斯加州的微波设施，将收集 1990- 1991年冬季（6-7个月）的气象数据， 然后可以被反转为下面的速度结构 个别车站。