Results 71 to 80 of about 193,810 (301)

Rupture Process of the Mw7.0 December 5, 2024 Offshore Cape Mendocino Earthquake

Geophysical Research Letters
The Mw7.0 December 5, 2024 Offshore Cape Mendocino earthquake ruptured a ∼60 km long portion of the east‐west trending Mendocino fault zone (MFZ). In order to clarify the rupture process, we assemble three‐component seismograms from regional seismic ...
F. F. Pollitz, K. A. Guns, C. E. Yoon
doaj   +1 more source

Technological and infrastructure collaborative seismic research in Western Mexico [PDF]

, 2016
In February and March 2014, Spanish, Mexican and British scientists and technicians explored the western margin of Mexico, a region with a high occurrence of large earthquakes (> Mw = 7.5) and tsunami generation, on board the British Royal Research ...
Alonso, José Luis, Bandy, William L., Bartolomé de la Peña, Rafael, Cameselle, Alejandra L., Castellón, Arturo, Cordoba, Diego, Day, Colin, Dañobeitia, Juan José, Mortera Gutiérrez, Carlos A., Nuñez, Diana, Núñez Cornú, Francisco, Perea, Héctor, Prada, Manel   +12 more
core  

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

NUMERICAL CONSIDERATIONS ON THE MODELING OF SOURCE AND BOUNDARY CONDITIONS FOR THE FREQUENCY DOMAIN VISCO-ACOUSTIC WAVE EQUATION SOLUTION

CT&F Ciencia, Tecnología & Futuro
Seismic modeling is an important step in the process used for imaging Earth subsurface. Current applications require accurate models associated with solutions of the wave propagation equation in real media.
Sheryl Avendaño, J.-C Muñoz-Cuartas
doaj   +1 more source

Determining Geological Properties by a Hybrid Seismic-Magnetotelluric Approach [PDF]

, 2002
This paper concerns the controlled source audio magnetotelluric technique (CSAMT) for imaging subsurface structure. Given the short time available, we limited our investigation to a simple 1D earth model where regional seismic and well logs suggest ...
Geiger, Hugh, Lamoureux, Michael
core  

Magneto--Acoustic Energetics Study of the Seismically Active Flare of 15 February 2011

, 2012
Multi--wavelength studies of energetic solar flares with seismic emissions have revealed interesting common features between them. We studied the first GOES X--class flare of the 24th solar cycle, as detected by the Solar Dynamics Observatory (SDO).
A.-C. Donea, A.-C. Donea, A.-C. Donea, A.-C. Donea, A.G. Kosovichev, A.G. Kosovichev, B. Calvo-Mozo, C. Lindsey, C. Lindsey, D. Beşliu-Ionescu, G.H. Fisher, G.J. Hurford, H. Hudson, H. Moradi, H.S. Hudson, H.S. Hudson, J. C. Buitrago-Casas, J. C. Martínez-Oliveros, J. D. Alvarado-Gómez, J. Schou, J.C. Martínez-Oliveros, J.C. Martínez-Oliveros, J.J. Sudol, S. Zharkov, V.V. Zharkova, V.V. Zharkova, V.V. Zharkova   +26 more
core   +1 more source

Unrest at Domuyo Volcano, Argentina, detected by geophysical and geodetic data and morphometric analysis [PDF]

, 2019
New volcanic unrest has been detected in the Domuyo Volcanic Center (DVC), to the east of the Andes Southern Volcanic Zone in Argentina. To better understand this activity, we investigated new seismic monitoring data, gravimetric and magnetic campaign ...
Acosta, Gemma, Astort, Ana, Folguera Telichevsky, Andres, Nacif, Andres Antonio, Ruiz, Francisco, Sagripanti, Lucía, Walter, Thomas R   +6 more
core   +1 more source

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

On the determination of the earthquake slip distribution via linear programming techniques [PDF]

, 2012
The description that one can have of the seismic source is the mani- festation of an imagined model, obviously outlined from Physic Theories and supported by mathematical methods.
Bushenkov, V., Caldeira, B., Smirnov, G.
core  

Slip history of the 2003 San Simeon earthquake constrained by combining 1-Hz GPS, strong motion, and teleseismic data [PDF]

, 2004
The slip history of the 2003 San Simeon earthquake is constrained by combining strong motion and teleseismic data, along with GPS static offsets and 1-Hz GPS observations.
Choi, Kyuhong, Hudnut, Kenneth W., Ji, Chen, Larson, Kristine M., Tan, Ying   +4 more
core   +2 more sources