关于GNSS-地震学用于人类地震检测的首次可行性演示
Iwona Kudłacik1, Jan Kapłon2, Kamil Kazmierski2
1Institute of Geodesy and Geoinformatics, Wrocław University of Environmental and Life Sciences, Grunwaldzka Str. 53, 50-357, Wrocław, Poland. iwona.kudlacik@upwr.edu.pl.
Scientific reports
|November 28, 2023
概括
高速的全球导航卫星系统 (GNSS) 数据现在可以检测和描述小,浅的地震,甚至是那些由人类活动引起的地震. 这一进步使得地震事件和潜在损害的精确监测成为可能.
科学领域:
- 地质物理学 地质物理学
- 地震学 地震学
- 卫星地质测量 卫星地质测
背景情况:
- 高速的GNSS对于中等到强烈的地震是有效的,但对于小规模的地震是不有效的.
- 小规模人为地震由于类似的移位和噪音大小而带来挑战.
- 现有的方法缺乏对描述浅层,人为诱导的地震事件的关注.
研究的目的:
- 开发和验证一种使用高频率GNSS数据检测和表征小级浅地震的程序.
- 评估GNSS-地震学的适用性,以监测可能导致轻微地震事件的人类活动.
- 将GNSS衍生动力学信息与地震解决方案进行比较,用于事件检测和表征.
主要方法:
- 使用精确点定位和变量计方法处理高频率 (10 Hz) 的GNSS数据.
- 在位置和速度时间序列上实施信号检测和过技术.
- 在五次采矿地震 (强度3.4-4.0) 上测试该程序.
主要成果:
- 在GNSS和用于初始地震检测的地震解决方案之间实现了高一致性 (在1秒内).
- 使用多星座GNSS (GPS + 利略) 证明了低强度浅地震的可靠特征.
- 精确确定诱导的位移 (几毫米) 和速度 (1-2厘米/秒),包括峰值值.
结论:
- 高频率的GNSS是一个可行的工具,用于常规监测小,浅的地震,包括人类起源的地震.
- 拟议的方法允许对这些事件进行可靠的动力学表征,并提供对潜在损害的见解.
- 这项研究为将GNSS-地震学纳入具有地震风险的工业活动监测铺平了道路.
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