Results 81 to 90 of about 27,288 (232)

Waveform modeling of the slab beneath Japan [PDF]

open access: yes, 2007
The tomographic P wave model for the Japan subduction zone derived by Zhao et al. (1994) has two very striking features: a slab about 90 km thick with P wave velocities 3–6% higher than the surrounding mantle and a mantle wedge with −6% low-velocity ...
Chen, Min   +3 more
core   +1 more source

Spatial‐temporal shifting patterns and in situ conservation of spotted seal (Phoca largha) populations in the Yellow Sea ecoregion

open access: yesIntegrative Zoology, Volume 19, Issue 2, Page 307-318, March 2024.
The distribution pattern of spotted seal habitats varied greatly among different months. The migration route formed in the Yellow Sea ecoregion indicated that this population might be geographically isolated from populations in other breeding areas around the world.
Hongfei ZHUANG   +9 more
wiley   +1 more source

Study of the Faults Network of Kunashir Island (Kuril Islands) in Order to Reconstruct the Features of its Tectonic Evolution

open access: yesRussian Journal of Earth Sciences
The paper is devoted to the study of the faults on Kunashir Island, focusing on their classification, morphology, kinematics, timing, and causes of formation, which are key to understanding the tectonic evolution of the area. The magma-supporting role of
Krikun Nikita Sergeevich   +2 more
doaj   +1 more source

Shape of the ocean surface and implications for the Earth's interior: GEOS-3 results [PDF]

open access: yes
A new set of 1 deg x 1 deg mean free air anomalies was used to construct a gravimetric geoid by Stokes' formula for the Indian Ocean. Utilizing such 1 deg x 1 deg geoid comparisons were made with GEOS-3 radar altimeter estimates of geoid height.
Bodine, J. H.   +3 more
core   +1 more source

Ridge subduction sparked reorganization of the Pacific plate-mantle system 60-50 million years ago [PDF]

open access: yes, 2015
A reorganization centered on the Pacific plate occurred ~53–47 million years ago. A “top-down” plate tectonic mechanism, complete subduction of the Izanagi plate, as opposed to a “bottom-up” mantle flow mechanism, has been proposed as the main driver ...
Dan J. Bower   +8 more
core   +3 more sources

Analysis and geological interpretation of gravity data from GEOS-3 altimeter [PDF]

open access: yes
A number of detailed gravimetric geoids of portions of the world's oceans from marine gravity measurements were constructed. The geoids were constructed by computing 1 x 1 deg or 10 x 10 deg averages of free-air anomaly data and subtracting these values ...
Chapman, M. E.   +2 more
core   +1 more source

Insights into Li and Li isotope cycling and sub-arc metasomatism from veined mantle xenoliths, Kamchatka [PDF]

open access: yes, 2009
Harzburgitic xenoliths cut by pyroxenite veins from Avachinsky volcano, Kamchatka, are derived from the sub-arc mantle and record element transfer from the slab to the arc. Olivine and orthopyroxene in the harzburgites have Li isotopic compositions (δ7Li
Halama, Ralf   +3 more
core   +1 more source

Written records of historical tsunamis in the northeastern South China Sea - Challenges associated with developing a new integrated database [PDF]

open access: yes, 2010
Comprehensive analysis of 15 previously published regional databases incorporating more than 100 sources leads to a newly revised historical tsunami database for the northeastern (NE) region of the South China Sea (SCS) including Taiwan.
Aitchison, JC   +4 more
core   +2 more sources

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