搜索结果: 1-11 共查到“地球物理学 Constraints”相关记录11条 . 查询时间(0.118 秒)
Constraints on mechanisms of chondrule formation from chondrule precursors and chronology of transient heating events in the protoplanetary disk
chondrules refractory inclusions chondrule precursors transient heating
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2017/4/10
The mineralogy, petrography, and oxygen-isotope compositions of porphyritic chondrules—dominant chondrule type
in most chondrite groups—suggest formation by incomplete melting of isotopically diverse...
New constraints on shergottite petrogenesis from analysis of Pb isotopic compositional space: Implications for mantle heterogeneity and crustal assimilation on Mars
shergottite Pb isotopes Martian geochemistry crustal assimilation mantle heterogeneity
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2017/4/10
Geochemical studies of shergottites (Martian basalts) based on Rb-Sr, Sm-Nd, and Lu-Hf isotopic systematics have
provided clues to understanding the geochemical evolution of the Martian mantle and id...
Assessment of deep electrical conductivity features of Northern Victoria Land (Antarctica) under other geophysical constraints
Magnetovariations electrical conductivity lithosphere
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2015/9/28
The lithospheric and crustal structure of the Victoria Land continental block (Antarctica) has been studied by geological and geophysical surveys. Among them magnetovariational investigations (MV) hav...
The 3550 year BP-1944 A.D.magma-plumbing system of Somma-Vesuvius: constraints on its behaviour and present state through a review of Sr-Nd isotope data
Somma-Vesuvius magma chamber crustal contamination
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2015/9/15
Vesuvius, dominating the densely-populated Neapolitan area, is one of the most dangerous volcanoes in the World. Its destructive power derives from energetic subplinian and plinian eruptions, such as ...
New constraints for site-effect characterization from seismic noise analysis in southern Italy. San Fele case study
Ambient noise Shear wave velocity profile Array measurements Seimic hazard
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2015/8/28
In the framework of ground-motion amplification analysis for southern Italy, the main target of this study is to provide new constraints on one-dimensional, shallow-velocity profiles for a site in the...
Transport processes at quartz–water interfaces: constraints from hydrothermal grooving experiments
Hydrothermal annealing experiment quartzite fluid pressure the topological structure
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2015/1/6
We performed hydrothermal annealing experiments on quartzite samples at temperatures of 392 to 568 °C and fluid pressures of 63 to 399 MPa for up to 120 h, during which hydrothermal grooves developed ...
New constraints on dike injection and fault slip during the 1975–1984 Krafla rift crisis, NE Iceland
New constraints dike injection fault slip Krafla rift crisis, NE Iceland
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2014/4/15
Correlation of KH9 spy and SPOT5 satellite images, airphotos, digital elevation model differencing, electronic distance measurement, and leveling survey data is used to constrain the deformation resul...
Constraints from rocks in the Taiwan orogen on crustal stress levels and rheology
rocks in the Taiwan orogen on crustal stress levels rheology
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2014/4/15
Taiwan’s Hsüehshan range experienced penetrative coaxial deformation within and near the brittle-plastic transition between6.5 and 3 Ma. This recent and short-lasting deformation in an active, well-s...
Accurate Measurement in the Field of the Earth of the General-Relativistic Precession of the LAGEOS II Pericenter and New Constraints on Non-Newtonian Gravity
General-Relativistic Pericenter Constraints on Non-Newtonian Gravity
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2011/9/14
The pericenter shift of a binary system represents a suitable observable to test for possible deviations from the Newtonian inverse–square law in favor of new weak interactions between macroscopic obj...
Fall-experiments on Merapi basaltic andesite and constraints on the generation of pyroclastic surges
Fall-experiments Merapi basaltic andesite constraints pyroclastic surges
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2010/9/28
We have performed fall-experiments with basaltic andesite rock samples from Merapi volcano, using an apparatus designed to analyze samples heated up to 850°C. Relative pressure changes during impact a...
Geodetic, teleseismic, and strong motion constraints on slip from recent southern Peru subduction zone earthquakes
Geodetic teleseismic strong motion constraints on slip southern Peru subduction zone earthquakes
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2014/4/9
We use seismic and geodetic data both jointly and separately to constrain coseismic slip from the 12 November 1996Mw7.7 and 23 June 2001Mw8.5 southern Peru subduction zone earthquakes, as well as two ...