Normal moveout correction stretches seismic reflection events at far offsets.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that normal moveout correction stretches seismic reflection events at far offsets?

Yes. Normal moveout (NMO) correction stretches seismic reflection events at non-zero and far offsets due to the sample-by-sample time-shifting process, prompting various methodological workarounds to mitigate resolution loss and distortion.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked 4 Aug 2026

The analysis

Multiple retrieved papers explicitly confirm that conventional normal moveout (NMO) correction introduces stretching artifacts at non-zero or far offsets, degrading temporal resolution and wavelet properties. No papers refute this well-established seismic processing phenomenon; instead, several papers propose new algorithms specifically designed to correct or bypass this stretching effect.

Evidence for · 5

Normal moveout stretch mute on shallow-reflection data

1992

Demonstrates the negative consequences of stretch ratios caused by normal moveout corrections on seismic data.

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Miller, R. D. (1992). Normal moveout stretch mute on shallow-reflection data. doi.org. https://doi.org/10.1190/1.1443217

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More for · 4

Non stretching NMO (Normal-Moveout) correction with DTW (Dynamic Time Warping) algorithm, study case: shallow target seismic

2021

Notes that increased velocity causes a stretch in the normal moveout process, particularly at far offsets.

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Pebriana, L. V., Haris, A., & Abdullah, A. (2021). Non stretching NMO (Normal-Moveout) correction with DTW (Dynamic Time Warping) algorithm, study case: shallow target seismic. doi.org. https://doi.org/10.1088/1742-6596/1882/1/012015

Improved Dynamic Correction for Seismic Data Processing: Mitigating the Stretch Effect in NMO Correction

2025

Explains that conventional NMO correction suffers from the stretch effect, especially in long-offset data.

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Cortes-Guerrero, P., Ortiz-Alemán, C., Urrutia-Fucugauchi, J., López-Juárez, S., Castillo, M. G. O., & Nava-Flores, M. (2025). Improved Dynamic Correction for Seismic Data Processing: Mitigating the Stretch Effect in NMO Correction. doi.org. https://doi.org/10.3390/geosciences15070258

A wavelet-based method for normal moveout correction (W-NMO)

2025

States that conventional NMO correction processes traces sample by sample, resulting in stretching at nonzero-offset traces.

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Zhang, B. & Wang, Y. (2025). A wavelet-based method for normal moveout correction (W-NMO). doi.org. https://doi.org/10.1190/geo-2025-0010

Wavelet-based normal moveout (W-NMO) correction

2026

Confirms that traditional NMO correction leads to NMO stretching in non-zero offset traces.

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Zhang, B. & Wang, Y. (2026). Wavelet-based normal moveout (W-NMO) correction. doi.org. https://doi.org/10.1190/image2025-4315592.1

What does the evidence say?

Receipt History

first checked04 Aug 2026

judged → SUPPORTED · 8604 Aug 2026

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