Results 21 to 30 of about 345,699 (263)

The Al Hoceima earthquake of May 26, 1994 and its aftershocks: a seismotectonic study

open access: yesAnnals of Geophysics, 1998
The present paper focuses on the moderate earthquake that occurred on May, 26, 1994, at 8 h 27 min, which caused great damage and two deaths. The epicentre of the main shock was located at 35.280N, 3.990W. The focal depth was 13 km, and the magnitude (Md)
L. A. Brahim   +6 more
doaj   +1 more source

Determining the stress field in active volcanoes using focal mechanisms

open access: yesFrontiers in Earth Science, 2016
Stress inversion of seismological datasets became an essential tool to retrieve the stress field of active tectonics and volcanic areas. In particular, in volcanic areas, it is able to put constrains on volcano-tectonics and in general in a better ...
Bruno Massa   +5 more
doaj   +1 more source

Main shock and aftershocks of the December 13, 1990, Eastern Sicily earthquake

open access: yesAnnals of Geophysics, 1995
n this paper we describe the location and the fault plane solution of the December 13, 1990, Eastern Sicily earthquake (ML = 5.4), and of its aftershock sequence.
M. Di Bona   +6 more
doaj   +1 more source

The geodynamics of Mt. Etna volcano during and after the 1984 eruption

open access: yesAnnals of Geophysics, 1999
Data concerning M > 2.5 earthquakes that occurred at Mt. Etna volcano (Sicily, Italy) during the period April 15th - October 29th, 1984 are here presented and discussed. Only those events with reliable focal mechanisms (at least eight polarities) have
C. Centamore, G. Patanè, S. La Delfa
doaj   +1 more source

The present-day stress field along the Northwest Pacific Wadati-Benioff zone constrained by focal mechanisms of moderate earthquakes

open access: yesFrontiers in Earth Science, 2023
The present-day stress field in the northwest Pacific Wadati-Benioff Zone (WBZ) has been investigated on the basis of earthquake focal mechanism catalog covering the period from 2012 to 2021. Our catalog contains 201 focal mechanism solutions (Mw 4.0–5.9)
Chengyu Liu   +7 more
doaj   +1 more source

Stress-field evolution during the 26 November 2019 Durrës (Albania) earthquake sequence: Co-seismic, early post-seismic, and tectonic-region inversions [PDF]

open access: yesEPJ Web of Conferences
We resolve the stress field associated with the 26 November 2019 Mw 6.3 Durrës earthquake sequence through three windows: the co-seismic mainshock, the early post-seismic phase (mainshock plus the 36 largest aftershocks recorded between 26 November and 2
Dushi Edmond   +2 more
doaj   +1 more source

Seismic Sequence Analysis of the Arraiolos Zone, South Portugal, and Its Seismotectonic Implications: A Detailed Analysis of the Period 15 January–30 June 2018

open access: yesRemote Sensing, 2023
The Arraiolos Zone has been affected by the persistent superficial seismicity (focal depth < 20 km) of a weak magnitude (M < 4) and some events of a higher magnitude (M > 4), and is mainly located around the Aldeia da Serra village.
Piedade Wachilala   +3 more
doaj   +1 more source

An earthquake focal mechanism catalog for source and tectonic studies in Mexico from February 1928 to July 2022 [PDF]

open access: yesEarth System Science Data, 2023
We present a focal mechanism catalog for earthquakes that occurred in Mexico and surrounding areas reported from February 1928 to July 2022. The magnitude of the events varies from −0.9 to 8.2.
Q. Rodríguez-Pérez, F. R. Zúñiga
doaj   +1 more source

A detailed analysis of some local earthquakes at Somma-Vesuvius

open access: yesAnnals of Geophysics, 1999
In this paper, we analyze local earthquakes which occurred at Somma-Vesuvius during two episodes of intense seismic swarms, in 1989 and 1995 respectively.
C. Troise   +5 more
doaj   +1 more source

Volcano-tectonic interactions revealed by inversion of focal mechanisms: stress field insight around and beneath the Vatnajökull ice cap in Iceland

open access: yesFrontiers in Earth Science, 2014
Volcano-tectonic processes in the central part of Iceland, covered by the Vatnajökull glacier, are investigated by inversion of focal mechanisms. Working on a large catalogue of focal mechanisms determined by the Icelandic Meteorological Office, we used ...
Romain ePlateaux   +4 more
doaj   +1 more source

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