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Magnitude and energy of earthquakes
Annals of Geophysics, 2010 Discrepancies arise among magnitudes as derived from local earthquake data (ML), body waves (MB) and surface waves (MS). The relation of ML to the others is as yet not definitive; but MS – mB = a (MS – b).
Charles Francis Richter, Beno Gutenberg
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Enriching the GEOFON seismic catalog with automatic energy magnitude estimations [PDF]
Earth System Science Data, 2023 We present a seismic catalog (Bindi et al., 2024, https://doi.org/10.5880/GFZ.2.6.2023.010) including energy magnitude Me estimated from P waves recorded at teleseismic distances in the range 20°≤Δ≤98° and for depths shorter than 80 km.
D. Bindi +9 more
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Earthquake magnitude, intensity, energy, and acceleration [PDF]
Bulletin of the Seismological Society of America, 1942 AbstractThis supersedes Paper 1 (Gutenberg and Richter, 1942). Additional data are presented. Revisions involving intensity and acceleration are minor. The equation log a = I/3 − 1/2 is retained. The magnitude-energy relation is revised as follows:(20) log E = 9.4 + 2.14 M − 0.054 M 2A numerical equivalent, for M from 1 to 8.6, is(21) log E = 9.1 +
Gutenberg, B., Richter, C. F.
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Interesting seismology （13）：Magnitude, moving toward the energy scale
地震科学进展, 2020 Rui Feng
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Dizhen xuebao, 2021 根据地震波衰减特性，采用一维速度模型开展了快速测定辐射能量ES和能量震级Me的方法研究。利用全球地震台网和国家数字测震台网提供的宽频带资料，测定了2014—2019年间MW≥6.0的115次浅源地震的辐射能量和能量震级，将计算结果与其它机构的结果进行对比。结果表明：利用本文方法可在得到地震数据半小时内计算出稳定的Me，且本文的测定结果与美国地震学研究联合会的结果基本一致。地震造成的灾害与能量震级的大小密切相关，当Me＞MW时，地震灾害较为严重；在所有的地震类型中，发震断层类型为走滑型时 ...
Zibo Wang +4 more
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Dizhen xuebao, 2023 利用国家地震台网和全球地震台网的宽频带远震P波波形数据，通过测定2014—2019年间国内MW≥6.0和国外MW≥6.5共105次浅源地震的辐射能量和能量震级，研究了震源机制解对辐射能量估计的影响。结果表明：① 震源机制不同导致地震能量辐射差异较大，其中走滑型地震对辐射能量的影响最大，对能量震级的平均影响因子为0.34，正断型地震对能量震级的平均影响因子为0.08，逆断型地震对能量震级的影响最小，平均影响因子为0.05；② 不同震源机制类型地震的差震级ΔM也不同，走滑型地震的ΔM为 0.31 ...
Ziteng Xie +5 more
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Multiple magnitudes and their cleverness
地震科学进展, 2022 Magnitude is a measure of the size of an earthquake. In practical work such as seismic activity analysis, people usually think that an earthquake has only one magnitude. Many people will have such doubts：why use multiple magnitudes?
Ruifeng Liu
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Terrestrial, Atmospheric and Oceanic Sciences, 2022 Key points logEs is proportional to 2.0ML for the Shoufeng earthquake sequence in Taiwan. A crossover magnitude detected at ML = 4.0 divides the MW–ML relation into two parts. For ML > 4.0, logM0 ∝ 0.67ML and MW ∝ ML; for ML
Ruey-Der Hwang +8 more
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Power Factor Estimation of Distributed Energy Resources Using Voltage Magnitude Measurements
Journal of Modern Power Systems and Clean Energy, 2021 This paper presents a new method for the estimation of the injection state and power factor of distributed energy resources (DERs) using voltage magnitude measurements only.
Samuel Talkington +2 more
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The research of the energy and the fluence of the primary and the secondary γ-ray in the n/γ hybrid radiation field [PDF]
E3S Web of Conferences, 2021 According to the "little boy" data from the United States, this paper simulates the primary γ-ray of the nuclear explosion and the secondary γ-ray produced by neutron, γ-ray and material interaction.
Guan ZhiYuan, Xu Mei
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