Results 51 to 60 of about 313 (188)

Advancements in the GRACE and GRACE‐FO Gradiometer Mode

open access: yesEarth and Space Science, Volume 12, Issue 5, May 2025.
Abstract The global gravitational gradient field has not been observed since the decommission of GOCE in 2013. Based on the foundational work of Peidou and Pagiatakis (2019, https://doi.org/10.1029/2018jb016382), we advance the concept of GRACE gradiometer mode (GM) for the purpose of using GRACE, GRACE‐FO and future gravity space missions as ...
Nikeet Pandit, Spiros Pagiatakis
wiley   +1 more source

Seismic Structure Characterizing the Large Shallow Slip Zone of the 17th‐Century Kuril Earthquake

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 5, May 2025.
Abstract The southern Kuril Trench subduction zone experienced a M9‐class megathrust earthquake in the 17th century, and another is highly probable within the next 30 years. This earthquake likely exhibited large coseismic slip at the shallower plate boundary fault, causing a devastating tsunami, while the deeper plate boundary experienced smaller slip,
Ryosuke Azuma   +5 more
wiley   +1 more source

Seismicity of the south of the Russian Far East in 2024 [PDF]

open access: yesГеосистемы переходных зон
The paper continues the series of annual brief reviews of the seismicity in the southern part of the Russian Far East, based on the data from the catalog of the “Yuzhno-Sakhalinsk” Regional Information Processing Center of the Sakhalin Branch of the ...
Safonov, Dmitry A.   +3 more
doaj   +1 more source

‘The non‐dormant beast’: Antisemitism in communities of Russian nationalists on Vkontakte

open access: yesNations and Nationalism, Volume 31, Issue 2, Page 361-377, April 2025.
Abstract The article explores the specifics of Russian antisemitic discourse of recent years using the example of three nationalist communities on Vkontakte, the most popular Russian social networking site, by means of critical discourse analysis. The main strategies they employ to frame the Jews online are stereotyping Jews as ungrateful and greedy ...
Petr Oskolkov   +2 more
wiley   +1 more source

Deep structure of South Kamchatka according to geophysical data

open access: yesГеодинамика и тектонофизика, 2018
Differences have been discovered in the deep structures of North and South Kamchatka, which raises a question about a boundary between these regions. This problem has been studied on the basis of the seismologic, inverse seismic tomographic (P-waves) and
Yu. F. Moroz, L. I. Gontovaya
doaj   +1 more source

Whole‐Mantle Isotropic and Anisotropic Tomography Beneath Japan and Adjacent Regions

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 3, March 2025.
Abstract The Japan Islands and surrounding regions have complex structures and tectonics due to strong interactions of four lithospheric plates, including the subducting Pacific and Philippine Sea slabs beneath the Okhotsk and Amurian plates, which have caused catastrophic interplate and intraplate earthquakes, as well as arc and intraplate volcanoes ...
Genti Toyokuni   +2 more
wiley   +1 more source

The 2021 Mw8.1 Kermadec Megathrust Earthquake: An Event Rupturing the Slab‐Mantle Interface With Up‐Dip High‐Frequency Seismic Energy Radiation

open access: yesGeophysical Research Letters, Volume 52, Issue 4, 28 February 2025.
Abstract Megathrust earthquakes often break the slab‐crust interface and radiate high‐frequency seismic waves from the down dip of their coseismic slip. In contrast, we show that the 2021 Mw8.1 Kermadec earthquake deviates from this mode. We resolve the kinematic rupture process of the event by leveraging finite fault inversions and a calibrated tele ...
Hongyu Zeng, Shengji Wei, Hongfeng Yang
wiley   +1 more source

Cretaceous to Paleocene depositional history of North-Pacific subduction zone: reconstruction from the Nemuro Group, eastern Hokkaido, northern Japan [PDF]

open access: yes, 2003
The Campanian-Paleocene Nemuro Group comparing the oldest strata in the Kuril Arc, is distributed in the east of Hokkaido Island, northern Japan. Strata of the group in this region are sedimentologically classified into eight depositional facies, most of
Naruse, Hajime
core   +1 more source

A High‐Resolution 3‐D P‐Wave Velocity Structure of the South‐Central Cascadia Subduction Zone From Wide‐Angle Shore‐Crossing Seismic Refraction Data

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 2, February 2025.
Abstract This study addresses a significant gap in understanding the features of the south‐central Cascadia subduction zone, a region characterized by complex geologic, tectonic, and seismic transitions both offshore and onshore. Unlike other segments along this margin, this area lacks a 3‐D velocity model to delineate its structural and geological ...
Asif Ashraf   +6 more
wiley   +1 more source

Testing Cloud Adjustment Hypotheses for the Maintenance of Earth's Hemispheric Albedo Symmetry With Natural Experiments

open access: yesGeophysical Research Letters, Volume 51, Issue 20, 28 October 2024.
Abstract Earth's Northern and Southern Hemispheres reflect essentially equal amounts of sunlight. How—and whether—this hemispheric albedo symmetry is maintained remains a mystery. We decompose Earth's hemispheric albedo symmetry into components associated with the surface, clear‐sky atmosphere, and different cloud types as defined by cloud effective ...
Michael S. Diamond   +2 more
wiley   +1 more source

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