local extrema scalogram

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Journal Article
Published: 02 January 2019
Bulletin of the Seismological Society of America (2019) 109 (1): 413–423.
...Ting‐Chung Huang; Yih‐Min Wu Abstract A robust algorithm has been developed for the automatic picking of P ‐wave arrival times. Owing to the properties of the local extrema scalogram (LES), this algorithm finds all significant quasi‐periodic peaks and valleys without selecting a specific frequency...
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Journal Article
Journal: Geophysics
Published: 01 February 2012
Geophysics (2012) 77 (1): G13–G24.
... , z i ) is the field T upward continued at z i and | z i | N / 2 is the DEXP power-law of altitudes, having the source-dependent exponent N / 2 . The DEXP theory ( Fedi, 2007 ) shows that the extrema in the resulting function...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP453.10
EISBN: 9781786203342
... a wavelet transform scalogram, here the example in part (b). The extrema plot maps out the spatial organization of local maxima (best fits) on the wavelet scalogram. The extrema lines are colour-coded according to the wavelet scale that they extend upwards to on the y-axis. Dark blue=0–5 voices; light blue...
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