Measurements of the directivity of musical instruments are presented in the context of a new directivity representation of sources for auralizations. Three instruments have been recorded over the whole compass simultaneously in both horizontal and vertical planes with a multimicrophone array. Results are analyzed focusing on the differences between the directivity of particular tones and the av...

The nominal directivity for uniformly spaced broadside parallel half-wave dipoles associated with a uniform excitation is evaluated. The amplitude distribution for an optimized directivity is then obtained for different numbers of elements with the separations between the dipoles as a variable. The optimum and nominal directivities are compared for different spacings of the elements. While thes...

S U M M A R Y We study in-plane ruptures on a bimaterial fault governed by a velocity-weakening friction with a regularized normal stress response. Numerical simulations and analytical estimates provide characterization of the ranges of velocity-weakening scales, nucleation lengths and background stresses for which ruptures behave as cracks or pulses, decaying or sustained, bilateral or unilate...

On 9 January 1857, a large earthquake of magnitude 7.9 occurred on the San Andreas fault, with rupture initiating at Parkfield in central California and propagating in a southeasterly direction over a distance of more than 360 km. Such a unilateral rupture produces significant directivity toward the San Fernando and Los Angeles basins. Indeed, newspaper reports of sloshing observed in the Los A...

SUMMARY We constructed an integrated rupture model of the 2021 Mw 7.1 Fukushima earthquake, intraplate by resolving both its spatiotemporal distribution slip-rate and high-frequency (∼1 Hz) radiations. analysed near-field seismic observations using a novel finite-fault inversion method that allows automatic parametrization teleseismic data from multiple arrays MUSIC backprojection (BP) enhances...

A devasting Mw7.2 earthquake struck southern Haiti on 14 August 2021, leading to over 2000 casualties and severe structural failures. This earthquake, which ruptured ~70 km west of the 2010 Mw7.0 event, offers a rare opportunity probe mechanical properties Haiti. study investigates kinematic multi-fault coseismic rupture process by jointly analyzing teleseismic interferometric synthetic apertur...