Results 111 to 120 of about 51,259 (279)

The Cause of Photospheric and Helioseismic Responses to Solar Flares: High-Energy Electrons or Protons?

, 2007
Analysis of the hydrodynamic and helioseismic effects in the photosphere during the solar flare of July 23, 2002, observed by Michelson Doppler Imager (MDI) on SOHO, and high-energy images from RHESSI shows that these effects are closely associated with ...
A. G. Kosovichev, Ben-Menahem A., Kosovichev A. G., Kostiuk N. D., Medrek M.   +4 more
core   +1 more source

High-density surveys conducted to reveal active deformations of the upper forearc slope along the Ryukyu Trench, western Pacific, Japan

Progress in Earth and Planetary Science, 2018
In this study, which was conducted to investigate present-day geological deformations occurring off the central Ryukyu Arc along the Ryukyu Trench (Okinawa-jima) in the vicinity of Japan, we obtained and examined dense, high-resolution, 2D grid (high ...
Kohsaku Arai, Takahiko Inoue, Tomoyuki Sato   +2 more
doaj   +1 more source

Full-waveform inversion in three-dimensional PML-truncated elastic media

, 2015
We are concerned with high-fidelity subsurface imaging of the soil, which commonly arises in geotechnical site characterization and geophysical explorations.
Fathi, Arash, Kallivokas, Loukas F., Poursartip, Babak   +2 more
core   +1 more source

Precise OBS location at the sea bottom in active seismic profiles using the air gun shot records [PDF]

, 2016
The Norcaribe campaign, in November – December 2013, funded by Spanish Ministry of Innovation and Science (Norcaribe Project CGL2010-17715), was performed on board of the Spanish research vessel “Sarmiento de Gamboa” around the Hispaniola island, also
Ambrós Ferrer, Marc, Cabieces, R., Carbó Gorosabel, Andrés, Davila, J.M., Gorosabel Araus, José Miguel, Granja Bruña, José Luis, Pazos, A., Quijano, Jesús, Rodríguez Zurrunero, Roberto, Santos Loaisa, José   +9 more
core  

An Overview of Tsunami Hazards in the Southwest Pacific Ocean

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
The southwest Pacific region is geologically complex and exhibits all the principal causes of tsunami generation. While contemporary events and historical catalogs indicate that trans‐Pacific tsunamis have affected this area (∼18% of tsunamis reported globally), it is unique in that a large part of the tsunami effects over the ∼200‐year historical ...
Jean H. M. Roger, Bruce E. O. Thomas, Jose Borrero, Brook Tozer, Julien Collot, Samuel Etienne, Catherine Chagué, Patrick D. Nunn, Emily M. Lane, Shaun Williams, David Burbidge, Hannah E. Power, William Power, Bernard Pelletier   +13 more
wiley   +1 more source

Incised valley paleoenvironments interpreted by seismic stratigraphic approach in Patos Lagoon, Southern Brazil

Brazilian Journal of Geology
: The Rio Grande do Sul (RS) coastal plain area (33,000 km 2 ) had its physiography modified several times through the Quaternary, responding to allogenic and autogenic forcings. The Patos Lagoon covers a significant area of RS coastal plain (10,000 km
Eduardo Calixto Bortolin, Jair Weschenfelder, Andrew Cooper   +2 more
doaj   +1 more source

Post-Caledonian tectonic evolution of the Precambrian and Paleozoic platform boundary zone offshore Poland based on the new and vintage multi-channel reflection seismic data [PDF]

Solid Earth
The structure of the post-Caledonian sedimentary cover in the transition from the Precambrian to the Paleozoic platforms in the Polish sector of the Baltic Sea is a matter of ongoing debate due to the sparsity of quality seismic data and insufficient ...
Q. Nguyen, M. Malinowski, M. Malinowski, S. Mazur, S. Stovba, S. Stovba, M. Ponikowska, C. Hübscher   +7 more
doaj   +1 more source

Evolution of Pore Fluid Pressure in an Accretionary Outer Wedge Over Megathrust Earthquake Cycles: The Northern Cascadia Example

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
The evolution of pore fluid pressure ( Pf$P_{\mathrm{f}}$) in the most seaward portion of a subduction accretionary prism plays an essential role in the cycle of tsunamigenic earthquakes. Based on recent geophysical observations, here we propose a testable conceptual model for this evolution for northern Cascadia offshore of Washington.
Tianhaozhe Sun, Kelin Wang
wiley   +1 more source

The United States Magnetotelluric Array and the National Impedance Map

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract The United States Magnetotelluric Array (USMTArray) data set, collected in the years 2006–2024, consists of more than 1,700 long‐period magnetotelluric stations covering the entirety of the contiguous United States on a quasi‐regular 70 km grid.
Anna Kelbert, Paul A. Bedrosian, Adam Schultz, Gary D. Egbert, Louise Pellerin, Jeffrey J. Love, Andrew Frassetto, Benjamin S. Murphy   +7 more
wiley   +1 more source

Signatures of widespread Surtseyan volcanism at the northern Reykjanes ridge

Communications Earth & Environment
Submarine explosive volcanism shapes seafloor morphology, impacts marine ecosystems, and poses risks to maritime infrastructure and coastal communities. However, its occurrences and drivers remain poorly constrained, especially for basaltic systems. Here
Jonas Preine, Christian Hübscher, Dominik Pałgan, Froukje M. van der Zwan, Carina Dittmers, Annalena Friedrich, Sarah Beethe, Vanessa Ehlies, Jonathan Ford, Benedikt Haimerl, Lisa Ischebeck, Max Lackner, Maryse Schmidt, Jan Oliver Eisermann, Linus Budke, David Þór Óðinsson, Kurt Panter, Morgane Le Saout, Nico Augustin   +18 more
doaj   +1 more source