Earthquake onset detection using spectro-ratio on multi-threshold time-frequency sub-band. - Ali Gamal Hafez; Tahir Abbas Khan; Tohru Kohda (Digit. Signal Process., 2009)

Clear P-wave arrival of weak events and automatic onset determination using wavelet filter banks. - Ali Gamal Hafez; Muhammad Tahir Abbas Khan; Tohru Kohda (Digit. Signal Process., 2010)

A Wavelet Spectral Analysis Technique for Automatic Detection of Geomagnetic Sudden Commencements. - Ali Gamal Hafez; Essam Ghamry; Hideki Yayama; Kiyohumi Yumoto (IEEE Trans. Geosci. Remote. Sens., 2012)

Detection of precursory signals in front of impulsive P-waves. - Ali Gamal Hafez; Mostafa Rabie; Tohru Kohda (Digit. Signal Process., 2013)

Un-decimated discrete wavelet transform based algorithm for extraction of geomagnetic storm sudden commencement onset of high resolution records. - Ali Gamal Hafez; Essam Ghamry; Hideki Yayama; Kiyohumi Yumoto (Comput. Geosci., 2013)

Seismic noise study for accurate P-wave arrival detection via MODWT. - Ali Gamal Hafez; Mostafa Rabie; Tohru Kohda (Comput. Geosci., 2013)

Geomagnetic Sudden Commencement Automatic Detection via MODWT. - Ali Gamal Hafez; Essam Ghamry (IEEE Trans. Geosci. Remote. Sens., 2013)