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PhasePApy

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Journal Article
Published: 31 August 2016
Seismological Research Letters (2016) 87 (6): 1384–1396.
...Chen Chen; Austin A. Holland ABSTRACT We developed a Python phase identification package: the PhasePApy for earthquake data processing and near‐real‐time monitoring. The package takes advantage of the growing number of Python libraries including Obspy. All the data formats supported by Obspy can...
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Journal Article
Published: 04 November 2020
Seismological Research Letters (2021) 92 (1): 555–563.
... with the Compute Unified Device Architecture (CUDA) parallel computing platform installed on the machine. If hardware limitations prevent utilizing the GPD picker, users can also optionally select a frequency‐band (FB) picker, which is based on Lomax et al. (2012) and included in the PhasePApy package ( Chen...
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Journal Article
Published: 26 May 2020
Bulletin of the Seismological Society of America (2020) 110 (5): 2005–2017.
... of theoretical travel times (TauP iasp91; Crotwell et al. , 1999 ), a kurtosis picker (PhasePApy; Chen and Holland, 2016 ), and linear regression. First, we band‐pass‐filtered all available seismograms between 5 and 35 Hz and used the kurtosis picker (0.1 s short window/3.5 s long window/ 6 σ threshold...
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Journal Article
Published: 05 July 2017
Seismological Research Letters (2017) 88 (5): 1252–1258.
... for download from the Incorporated Research Institutions for Seismology website or among the private data. Data processing was performed using the Python packages ObsPy ( Krischer et al. , 2015 ). For automatic picking of P ‐ and S ‐phase arrivals, we use the package PhasePApy ( Chen and Holland, 2016...
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Journal Article
Published: 11 March 2020
Seismological Research Letters (2020) 91 (3): 1646–1659.
... ), were linked to seismic events using PhasePAPy ( Chen and Holland, 2016 ). Figure 2. Example of a generalized phase detection (GPD)‐picker being used to pick (a) the P and S arrivals for an earthquake and (b) a blast. Vertical dashed lines indicate automated picks. The color version...
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Journal Article
Published: 21 July 2022
Seismological Research Letters (2022) 93 (6): 3266–3277.
... P ‐wave travel times for all 19 stations. To validate the trained CNN model, we use another automatic phase picker tool: PhasePApy, which picks with a dynamic threshold by processing the characteristic functions of waveforms ( Chen and Holland, 2016 ). Then we compute travel‐time residuals...
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Journal Article
Published: 10 June 2020
Seismological Research Letters (2020) 91 (4): 2355–2367.
... ) and the use of a time‐domain filter over the input time series, for example, FilterPicker ( Lomax et al. , 2012 ) and PhasePApy ( Chen and Holland, 2016 ), have been made to enhance the precision and stability of this algorithm. Another type of energy‐dependent algorithm is high‐order statistical (HOS...
Journal Article
Published: 26 September 2018
Seismological Research Letters (2018) 89 (6): 2413–2419.
.... Chambers D. Chu S. X. Michailos K. , and Townend J. 2017 . Eqcorrscan: Repeating and near‐repeating earthquake detection and analysis in python , Seismol. Res. Lett. 89 , no.  1 , 173 . Chen C. , and Holland A. A. 2016 . Phasepapy: A robust pure python package...
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Journal Article
Published: 04 March 2020
Seismological Research Letters (2020) 91 (3): 1794–1803.
.... 2010 . Testing the ability of surface arrays to monitor microseismic activity , Geophys. Prospect. 58 , no.  5 , 821 – 830 . Chen C. , and Holland A. A. 2016 . PhasePApy: A robust pure Python package for automatic identification of seismic phases , Seismol. Res. Lett. doi...
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Journal Article
Published: 11 September 2019
Seismological Research Letters (2019) 90 (6): 2276–2284.
... – 1998 . Chen C. , and Holland A. A. 2016 . PhasePApy: A robust pure Python package for automatic identification of seismic phases , Seismol. Res. Lett. 87 , 1384 – 1396 . Chiaraluce L. Di Stefano R. Tinti E. Scognamiglio L. Michele M. Casarotti E...
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Journal Article
Published: 19 January 2023
Seismological Research Letters (2023) 94 (2A): 813–828.
... , 4960 – 4964 . Chen C. , and Holland A. A. 2016 . PhasePApy: A robust pure python package for automatic identification of seismic phases , Seismol. Res. Lett. 87 , 1384 – 1396 . Goodfellow I. Bengio Y. , and Courville A. 2016 . Deep Learning , MIT Press...
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Journal Article
Published: 13 November 2019
Seismological Research Letters (2020) 91 (2A): 611–621.
... . Chen C. , and Holland A. A. 2016 . PhasePApy: A robust pure Python package for automatic identification of seismic phases , Seismol. Res. Lett. 87 , no.  6 , doi: 10.1785/0220160019 . Chen X. Pennington C. Haffener J. Chang J. C. He X. Zhan Z. Ni S...
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Journal Article
Published: 01 September 2021
Seismological Research Letters (2022) 93 (1): 413–425.
.... C. 2020 . Using a deep neural network and transfer learning to bridge scales for seismic phase picking , Geophys. Res. Lett. 47 , no.  16 , e2020GL088651 , doi: 10.1029/2020GL088651 . Chen C. , and Holland A. A. 2016 . PhasePApy: A robust pure Python package for automatic...
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