Results 121 to 130 of about 220,882 (295)

Earthquake in central Italy and velocities structure of the mantle

Геофизический журнал, 2018
A three-dimensional P-velocity model of the European mantle built on the Taylor approximation made it possible to analyze the velocity structure of the mantle under the Mediterranean and, in particular, under Central Italy, to a depth of 2500 km. It is
T. A. Tsvetkova, I. V. Bugaenko, L. N. Zaets   +2 more
doaj   +1 more source

Upper mantle P velocity structure beneath the Midwestern United States derived from triplicated waveforms [PDF]

, 2012
Upper mantle seismic velocity structures in both vertical and horizontal directions are key to understanding the structure and mechanics of tectonic plates.
Chu, Risheng, Helmberger, Don V., Schmandt, Brandon   +2 more
core  

Identifying the pre‐Odra river system with hydroacoustic and seismic reflection imagery offshore Rügen Island, southern Baltic Sea

Boreas, EarlyView.
Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt, Elisabeth Seidel, Christian Hübscher, Benedikt Haimerl, Jonas Preine   +4 more
wiley   +1 more source

Upper-mantle velocity structures beneath the Tibetan Plateau and surrounding areas inferred from triplicated P waveforms

Earth and Planetary Physics, 2019
P-wave waveforms in the distance range between 12° and 30° were analyzed to investigate upper-mantle P velocity structures beneath the Tibetan Plateau and surrounding areas.
RiSheng Chu, LuPei Zhu, ZhiFeng Ding
doaj   +1 more source

The break-up of continents and the formation of new ocean basins

, 2002
Rifted continental margins are the product of stretching, thinning and ultimate break-up of a continental plate into smaller fragments, and the rocks lying beneath them store a record of this rifting process.
Minshull, T.A.
core   +1 more source

Isbaaro: Checkpoints and World Making beyond the State in Somalia

Development and Change, EarlyView.
ABSTRACT This article examines the dynamics of checkpoint authority in Somalia, focusing on how kinship, mobility and checkpoint practices intersect to shape political and social orders. Challenging the notion that checkpoint governance is either an expression of state‐like power or indicative of the state's absence, the authors argue that Somali ...
Peer Schouten, Abdirahman Edle, Jethro Norman   +2 more
wiley   +1 more source

Stability and distribution of dense hydrous magnesium silicates in the mantle transition zone under low water activity conditions

Communications Earth & Environment
Water plays a central role in controlling the physical and chemical properties of Earth’s deep interior. It remains uncertain how water is stored in subducting slabs within the mantle transition zone, between depths of about 410 and 660 kilometers, and ...
Yunke Song, Xinzhuan Guo, Kuan Zhai, Wei Guo, Takashi Yoshino   +4 more
doaj   +1 more source

The possible nature of the seismic activity of the depths of the Predobudruzhsky trough and the Northern Dobruja

Геофизический журнал, 2013
PeriDobruzha depression and its surrounding belong to border zone of the mantle under the EEP, distinguished by the changes of zero isoline of velocity discrepancies with the depth within the limits of the upper mantle and its transition zone according ...
V. I. Starostenko, T.K. Burakhovich, A. Kushnir, O. V. Legostaeva, T.A. Tsvetkova, E. M. Sheremet, L. A. Shumlyanskaya   +6 more
doaj   +1 more source

Environmental Drivers of Jumbo Squid During Fishery Collapse in the Gulf of California (2019–2024)

Fisheries Oceanography, EarlyView.
ABSTRACT The jumbo squid (Dosidicus gigas) is a cephalopod endemic to the eastern Pacific with significant ecological and economic importance. Its exploitation in the Gulf of California (GC) peaked in the 1990s, with catches exceeding 100,000 tons, but collapsed in 2009 and virtually disappeared by 2015, largely due to environmental changes and ...
Mario Vásquez‐Ortiz, Juan Roberto F. Vallarta‐Zárate, Jesús E. Osuna‐Soto, Emma Verónica Pérez‐Flores, Leslie Altamirano‐López, Ramón Isaac Rojas‐González   +5 more
wiley   +1 more source

Pervasive seismic low-velocity zones within stagnant plates in the mantle transition zone: Thermal or compositional origin?

, 2017
We exploit conversions between P and S waves for large-scale, high-resolution imaging of the mantle transition zone beneath Northwest Pacific and the margin of Eastern Asia.
B. Tauzin, Seongryong Kim, B. Kennett
semanticscholar   +1 more source