Uncertainty and Spatial Correlation in Station Measurements for mb Magnitude Estimation Article Swipe
William L. Yeck
,
A. T. Ringler
,
D. R. Shelly
,
P. S. Earle
,
H. Benz
,
David C. Wilson
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1785/0320240010
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1785/0320240010
The body-wave magnitude (mb) is a long-standing network-averaged, amplitude-based magnitude used to estimate the magnitude of seismic sources from teleseismic observations. The U.S. Geological Survey National Earthquake Information Center (NEIC) relies on mb in its global real-time earthquake monitoring mission. Although waveform modeling-based moment magnitudes are the modern standard to characterize earthquake size, mb is important because (1) in many cases, waveform modeling is not possible (e.g., low signal-to-noise events), (2) mb is applicable over a broad range of magnitudes, ∼M 4–7, and (3) there is a many decades-long history of estimating mb magnitudes. We use the NEIC Preliminary Determination of Epicenters earthquake catalog to investigate the uncertainty in NEIC station mb measurements. We show that mb measurements are spatially correlated, which can bias event mb, and we describe an empirical relation between this spatial correlation and station-to-station distance. We further describe an approach to mitigate bias from the spatial correlation. Accounting for the spatial covariance of observations can change the event mb from −0.15 to 0.07 mb units (10th to 90th percentile) for smaller events (mb≤4.5). These smaller events have the largest mb standard deviations ranging from 0.05 to 0.15 mb units (10th to 90th percentile).
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1785/0320240010
- OA Status
- diamond
- Cited By
- 2
- References
- 18
- Related Works
- 10
- OpenAlex ID
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All OpenAlex metadata
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https://openalex.org/W4401713611Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1785/0320240010Digital Object Identifier
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Uncertainty and Spatial Correlation in Station Measurements for mb Magnitude EstimationWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2024Year of publication
- Publication date
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2024-07-01Full publication date if available
- Authors
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William L. Yeck, A. T. Ringler, D. R. Shelly, P. S. Earle, H. Benz, David C. WilsonList of authors in order
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https://doi.org/10.1785/0320240010Publisher landing page
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YesWhether a free full text is available
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diamondOpen access status per OpenAlex
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https://doi.org/10.1785/0320240010Direct OA link when available
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Magnitude (astronomy), Estimation, Statistics, Correlation, Environmental science, Spatial correlation, Remote sensing, Geodesy, Geography, Mathematics, Physics, Engineering, Astrophysics, Geometry, Systems engineeringTop concepts (fields/topics) attached by OpenAlex
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2Total citation count in OpenAlex
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2025: 2Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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| referenced_works | https://openalex.org/W2112393517, https://openalex.org/W2099062381, https://openalex.org/W2117268586, https://openalex.org/W1551313082, https://openalex.org/W2331001445, https://openalex.org/W2149560454, https://openalex.org/W2575990100, https://openalex.org/W1697235097, https://openalex.org/W2086215816, https://openalex.org/W4385725017, https://openalex.org/W2149682284, https://openalex.org/W2048430744, https://openalex.org/W3037628091, https://openalex.org/W2778692713, https://openalex.org/W612549454, https://openalex.org/W6948282832, https://openalex.org/W6967437300, https://openalex.org/W3003257820 |
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