Evaluation of Earthquake Magnitude Estimation and Event Detection Thresholds for Real‐Time GNSS Networks: Examples from Recent Events Captured by the Network of the Americas

Kathleen M. Hodgkinson; David J. Mencin; Karl Feaux; Charles Sievers; Glen S. Mattioli

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Evaluation of Earthquake Magnitude Estimation and Event Detection Thresholds for Real‐Time GNSS Networks: Examples from Recent Events Captured by the Network of the Americas

机译：对实时GNSS网络的地震幅度估计和事件检测阈值的评估：来自美国网络捕获的最近事件的示例

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Several studies have shown that real‐time (RT) Global Navigation Satellite Systems (GNSS) measurements can provide an estimate of an earthquake’s moment magnitude (?Mw?) using scaling laws that relate peak ground displacements (PGDs) and hypocentral distance with Mw?. In this study, we use data from GNSS stations operated by UNAVCO as part of the National Science Foundation Geodetic Facility for the Advancement of Geoscience (GAGE) that comprises the Network of the Americas (NOTA) to show that precise point positioning (PPP) solutions distributed in RT during five recent earthquakes could be used to calculate Mw rapidly and reliably. We analyze solutions distributed by UNAVCO during the 8 September 2017 Mw?8.2 Tehuantepec, Mexico, 10 January 2018 Mw?7.5 Great Swan Island, Honduras, 23 January 2018 Mw?7.9 Gulf of Alaska earthquake, and the 4 July 2019 Mw?6.4 and 6 July 2019 Mw?7.1 Ridgecrest, California, earthquakes.

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《Seismological research letters》 |2020年第3期|共18页
作者
Kathleen M. Hodgkinson; David J. Mencin; Karl Feaux; Charles Sievers; Glen S. Mattioli;
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UNAVCO;

UNAVCO;

UNAVCO;

UNAVCO;

UNAVCO;

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原文格式 PDF
正文语种 eng
中图分类地震学;
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Evaluation of Earthquake Magnitude Estimation and Event Detection Thresholds for Real‐Time GNSS Networks: Examples from Recent Events Captured by the Network of the Americas

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