Comparing the Broadband Rupture Process of Large Earthquakesin Different Tectonic Settings

不同构造环境下大地震宽带破裂过程的比较

• 批准号: 8721190
• 负责人: Heidi Houston
• 金额: $ 11.21万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-03-01 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8721190&HistoricalAwards=false
• 关键词: Comparing; Broadband; Rupture; Process; Large

With the advent of high-quality digital seismograms from the Global Digital Seismic Network, and with our increasing analytic and computational ability to invert such data for earthquake source characteristics, it is becoming possible to probe more finely the asperity size distribution during rupture of an earthquake. In order to gain a better understanding of the effect of tectonic setting on rupture process, we propose to investigate source characteristics of large earthquakes at periods of 1 to 30 seconds. We wish to compare source spectra, source time functions, and spatial distribution of moment release for shallow subduction earthquakes from several different zones, outer-rise earthquakes that occur within oceanic lithosphere seaward of subduction zones, and intermediate and deep earthquakes.

随着高质量数字地震图的出现， 全球数字地震网络，随着我们越来越多的分析， 和计算能力来反演这些地震数据 源特性，这是成为可能的探测更多 在断裂过程中， 地震 为了更好地了解 构造背景对破裂过程的影响，我们建议调查 周期1 ~ 30的大震震源特征 秒 我们希望比较源光谱，源时间 函数和空间分布的力矩释放浅 来自多个不同地区的俯冲地震、外隆 地震发生在海洋岩石圈向海， 俯冲带和中深源地震。