Ebrahim Haghshenas's research while affiliated with International Institute of Earthquake Engineering and Seismology and other places

... UAN has been applied in many applications, such as in obtaining microzonation maps (Ashayeri et al., 2020), soil mapping (Wathelet et al., 2020) or monitoring traffic noise (Zambon et al., 2018), economic growth (Hong et al., 2020), or cultural events (Kil et al., 2021), global climate imprints (Stutzmann et al., 2009), engineering geology (Iannucci et al., 2018) geohazards such as landslides (Hussain et al., 2019), volcanos (De Plaen et al., 2019) and hydrology (Tribaldos and Ajo-Franklin, 2021). All applications of ambient noise require its stability over time. ...

... Tectonically, Kermanshah is located on an active seismic zone of Zagros thrust-fold belt generated due to collisions of Eurasian and Arabian plates, extended north-west to south-east along the borderline between Iran and Iraq as well as Turkey. The region had several major historic earthquakes, but the most recent one occurred on November 12, 2017, Mw 7.3 that has led to questions of seismic performance of engineering structures and masonry buildings in perspectives of local site effects [22,23]. Probabilistic Seismic Hazard Assessment (PSHA) and Seismic Microzonation (SM) were performed for Kermanshah city and Kangavar (the other major municipality in Kermanshah province) before Mw 7.3 earthquake event [24,25] along with seismic vulnerability assessment of the masonry buildings of Kermanshah city [26]. ...

... The main objective of the current study is to explore the seismic behavior of different structural buildings and seismological aspects of this event; including Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), Peak Ground Displacement (PGD), Fourier amplitude spectra, and spectral acceleration. Although the seismic geological properties of Sarpol-e-zahab earthquake were previously well-established (Ashayeri et al. 2019(Ashayeri et al. , 2020Naserieh et al. 2020;Zafarani et al. 2020;Yaghmaei-Sabegh 2019, 2020Mahani & Kazemian 2018;Shakiba et al. 2018;Eshaghi et al. 2019), it was the first time that a study on the Seismological aspects and seismic behavior of buildings due to this earthquake was reported. ...

... Some of the most important of these studies in the world are described in TC4 manual. The microzonation studies of Tehran (Khandan et al. 2011;Jafari et al. 2004), Qom , and Asaluyeh (Davoodi et al. 2019) and Bam (Jafari et al. 2005) also are among the most important works done in Iran. ...

... This method was recommended in ASCE/SEI 7-16 (2017) and by several researchers (Acerra, Havenith, and Zacharopoulos 2004;Albarello and Lunedei 2013;Campbell and Bozorgnia 2007;Haghshenas et al. 2008;NBC 2015b;Picozzi, Parolai, and Albarello 2005;Stewart et al. 2011). Since the correlated horizontal ground motion records have one rotation angle equal to or close to zero, the maximum value may not be a strong function of the component correlation form. ...

... The acquired dispersion and ellipticity curves of surface waves carry information about mechanical properties of the subsurface. Hence, we can jointly invert these data for the S-wave velocity profile (Scherbaum et al. 2003;Wathelet et al. 2004;Arai & Tokimatsu 2005;Wathelet 2008;Poggi et al. 2012;Fazlavi & Haghshenas 2015;Ullah & Prado 2016;Gouveia et al. 2018). In this work, we perform a joint inversion using a newly developed algorithm for the multizonal transdimensional Bayesian inversion (Hallo et al. 2021). ...

... One of the problem, using HVSR on ambient noise data, in Tehran is the lack of microtremor energy on low frequency signal (0.1-1 Hz), because of the distance between Tehran and oceans (the nearest sea to Tehran is Caspian Sea with a distance about 100 Km) as the source of the ambient noises in these range of frequencies [24,25]. In order to overcome this deficiency of energy we also calculate horizontal/vertical spectral ratio using earthquake records. ...

... For example, the HVSR method [2,3] is used to assess the fundamental frequency of soil deposits. Separate studies successfully implemented the HVSR technique in Turkey and Iran to calculate the site predominant frequency enhance the HVSR technique to infer the subsurface shear wave profile [4][5][6]. ...

... El método HVSR o H/V se basa en la interpretación del cociente de los espectros de Fourier de las componentes horizontal y vertical del movimiento del suelo. Inicialmente este método fue usado para determinar la frecuencia de resonancia del suelo y estimar la amplificación máxima, lo que se emplea para caracterizar los efectos de sitio en ingeniería civil [226,189,301,26]. ...