نتایج جستجو برای: transpression tectonic

تعداد نتایج: 10320  

2011
I. Matsuyama F. Nimmo

[1] Vesta’s large southern hemisphere impact basin is likely to have caused reorientation. However, because the basin is not centred at the south pole, Vesta likely also has a remnant rotational figure. Reorientation of ≈6° is predicted to have occurred based on the dimensions of the basin. Existing measurements of Vesta’s shape are consistent with ≈20° or less reorientation, and ≈20% or less d...

2002
Tom Parsons

[1] The M = 7.8 1906 San Francisco earthquake cast a stress shadow across the San Andreas fault system, inhibiting other large earthquakes for at least 75 years. The duration of the stress shadow is a key question in San Francisco Bay area seismic hazard assessment. This study presents a three-dimensional (3-D) finite element simulation of post-1906 stress recovery. The model reproduces observe...

2017
Yaodong Qiu Zhengtao Wang Weiping Jiang Bingbing Zhang Fupeng Li Fei Guo

CHAMP and Swarm satellite magnetic data are combined to establish the lithospheric magnetic field over the Tibetan Plateau at satellite altitude by using zonal revised spherical cap harmonic analysis (R-SCHA). These data are integrated with geological structures data to analyze the relationship between magnetic anomaly signals and large-scale geological tectonic over the Tibetan Plateau and to ...

2009
Kelin X. Whipple

In the mid‐1980s, advances in understanding the mechanics of the fold‐and‐thrust belts that flank many collisional mountain ranges set the stage for a fundamental change in our appreciation of the role of erosion in the tectonic evolution of mountain ranges. A combination of sandbox experiments, analytical treatments of stress state and field observations showed that fold‐and‐thrust belts form ...

2010
E. Sizova T. Gerya

a r t i c l e i n f o Plate tectonics is a self-organizing global system driven by the negative buoyancy of the thermal boundary layer resulting in subduction. Although the signature of plate tectonics is recognized with some confidence in the Phanerozoic geological record of the continents, evidence for plate tectonics becomes less certain further back in time. To improve our understanding of ...

2005
Russell L. Wheeler

Paleoseismological study of geologic features thought to result from Quaternary tectonic faulting can characterize the frequencies and sizes of large prehistoric and historical earthquakes, thereby improving the accuracy and precision of seismichazard assessments. Greater accuracy and precision can reduce the likelihood of both underprotection and unnecessary design and construction costs. Publ...

2014
Marilia Tavares Anibal Azevedo

This paper inspects possible influence of solar cycles on earthquakes through of statistical analyses. We also discussed the mechanism that would drive the occurrence of increasing of earthquakes during solar maxima. The study was based on worldwide earthquakes events during approximately four hundred years (16002010).The increase of earthquakes events followed the Maxima of Solar cycle, and al...

2006

Key-words: Earthquakes, Tectonic movements, Stress, DisplaceKljuZne rije* Potresi, Tektonski pokreti, Stres, Pomaci struktura, ment, Seismotectonically active zone Seizmotektonski aktivna zona A permanent seismotectonic activity is present in the region of U podrutju sjevernog Velebita stalno je prisutna seizmotektonska northern Velebit. Through history a number of earthquakes magniaktivnast. U...

Journal: :تحقیقات جغرافیایی 0
عزیز رحیمی چاکدل دانشگاه گلستان مجید نعمتی دانشگاه کرمان مصطفی رقیمی دانشگاه گلستان معصومه روستائی دانشگاه گلستان مریم آق آتابای دانشگاه گلستان

the present study carried out to identify neo tectonic activity of the gorgan river basin in golestan province, in north of eastern alborz range is investigated by four geomorphic indices including the stream– gradient index (sl), drainage basin asymmetry (af), reveres symmetry of topography (t) and mountain front sinuosity (smf). result from the analysis is accumulated and expressed as an in...

2014
Elhoucine Essefi Goro Komatsu Alberto G. Fairén Marjorie A. Chan Chokri Yaich

Spring mounds on Earth and on Mars could represent optimal niches of life development. If life ever occurred on Mars, ancient spring deposits would be excellent localities to search for morphological or chemical remnants of an ancient biosphere. In this work, we investigate models of formation and activity of well-exposed spring mounds in the Mechertate-Chrita-Sidi El Hani (MCSH) system, easter...

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